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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.11130">arXiv:2011.11130</a> <span> [<a href="https://arxiv.org/pdf/2011.11130">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Physics and Society">physics.soc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Multiagent Systems">cs.MA</span> </div> </div> <p class="title is-5 mathjax"> Ride-hailing Impacts on Transit Ridership: Chicago Case Study </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Breuer%2C+H">Helena Breuer</a>, <a href="/search/physics?searchtype=author&query=Du%2C+J">Jianhe Du</a>, <a href="/search/physics?searchtype=author&query=Rakha%2C+H+A">Hesham A. Rakha</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.11130v1-abstract-short" style="display: inline;"> Existing literature on the relationship between ride-hailing (RH) and transit services is limited to empirical studies that lack real-time spatial contexts. To fill this gap, we took a novel real-time geospatial analysis approach. With source data on ride-hailing trips in Chicago, Illinois, we computed real-time transit-equivalent trips for all 7,949,902 ride-hailing trips in June 2019; the sheer… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.11130v1-abstract-full').style.display = 'inline'; document.getElementById('2011.11130v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.11130v1-abstract-full" style="display: none;"> Existing literature on the relationship between ride-hailing (RH) and transit services is limited to empirical studies that lack real-time spatial contexts. To fill this gap, we took a novel real-time geospatial analysis approach. With source data on ride-hailing trips in Chicago, Illinois, we computed real-time transit-equivalent trips for all 7,949,902 ride-hailing trips in June 2019; the sheer size of our sample is incomparable to the samples studied in existing literature. An existing Multinomial Nested Logit Model was used to determine the probability of a ride-hailer selecting a transit alternative to serve the specific O-D pair, P(Transit|CTA). We find that 31% of ride-hailing trips are replaceable, whereas 61% of trips are not replaceable. The remaining 8% lie within a buffer zone. We measured the robustness of this probability using a parametric sensitivity analysis and performed a two-tailed t-test. Our results indicate that of the four sensitivity parameters, the probability was most sensitive to the total travel time of a transit trip. The main contribution of our research is our thorough approach and fine-tuned series of real-time spatiotemporal analyses that investigate the replaceability of ride-hailing trips for public transit. The results and discussion intend to provide perspective derived from real trips and we anticipate that this paper will demonstrate the research benefits associated with the recording and release of ride-hailing data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.11130v1-abstract-full').style.display = 'none'; document.getElementById('2011.11130v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Paper submitted to the Transportation Research Board Annual Meeting</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.06050">arXiv:2008.06050</a> <span> [<a href="https://arxiv.org/pdf/2008.06050">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Physics and Society">physics.soc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Multiagent Systems">cs.MA</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.cstp.2021.11.010">10.1016/j.cstp.2021.11.010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An In-Depth Analysis of Ride-Hailing Travel Using a Large-scale Trip-Based Dataset </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Du%2C+J">Jianhe Du</a>, <a href="/search/physics?searchtype=author&query=Rakha%2C+H+A">Hesham A. Rakha</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">Helena Breuer</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2008.06050v1-abstract-short" style="display: inline;"> With the rapid increase in ride-hailing (RH) use, a need to better understand and regulate the industry arises. This paper analyzes a year's worth of RH trip data from the Greater Chicago Area to study RH trip patterns. More than 104 million trips were analyzed. For trip rates, the results show that the total number of trips remained stable over the year, with pooled trips steadily decreasing from… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.06050v1-abstract-full').style.display = 'inline'; document.getElementById('2008.06050v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.06050v1-abstract-full" style="display: none;"> With the rapid increase in ride-hailing (RH) use, a need to better understand and regulate the industry arises. This paper analyzes a year's worth of RH trip data from the Greater Chicago Area to study RH trip patterns. More than 104 million trips were analyzed. For trip rates, the results show that the total number of trips remained stable over the year, with pooled trips steadily decreasing from 20 to 9 percent. People tend to use RH more on weekends compared to weekdays. Specifically, weekend RH trip counts (per day) are, on average, 20 percent higher than weekday trip counts. The results of this work will help policy makers and transportation administrators better understand the nature of RH trips, which in turn allows for the design of a better regulation and guidance system for the ride-hailing industry. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.06050v1-abstract-full').style.display = 'none'; document.getElementById('2008.06050v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Paper submitted to the Transportation Research Board Annual Meeting. The Chicago Case Study, Case Studies on Transport Policy, 2021</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1603.00243">arXiv:1603.00243</a> <span> [<a href="https://arxiv.org/pdf/1603.00243">pdf</a>, <a href="https://arxiv.org/ps/1603.00243">ps</a>, <a href="https://arxiv.org/format/1603.00243">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.116.242501">10.1103/PhysRevLett.116.242501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Precision Measurement of the Radiative $\Beta$ Decay of the Free Neutron </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bales%2C+M+J">M. J. Bales</a>, <a href="/search/physics?searchtype=author&query=Alarcon%2C+R">R. Alarcon</a>, <a href="/search/physics?searchtype=author&query=Bass%2C+C+D">C. D. Bass</a>, <a href="/search/physics?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Byrne%2C+J">J. Byrne</a>, <a href="/search/physics?searchtype=author&query=Chupp%2C+T+E">T. E. Chupp</a>, <a href="/search/physics?searchtype=author&query=Coakley%2C+K+J">K. J. Coakley</a>, <a href="/search/physics?searchtype=author&query=Cooper%2C+R+L">R. L. Cooper</a>, <a href="/search/physics?searchtype=author&query=Dewey%2C+M+S">M. S. Dewey</a>, <a href="/search/physics?searchtype=author&query=Gardner%2C+S">S. Gardner</a>, <a href="/search/physics?searchtype=author&query=Gentile%2C+T+R">T. R. Gentile</a>, <a href="/search/physics?searchtype=author&query=He%2C+D">D. He</a>, <a href="/search/physics?searchtype=author&query=Mumm%2C+H+P">H. P. Mumm</a>, <a href="/search/physics?searchtype=author&query=Nico%2C+J+S">J. S. Nico</a>, <a href="/search/physics?searchtype=author&query=O%27Neill%2C+B">B. O'Neill</a>, <a href="/search/physics?searchtype=author&query=Thompson%2C+A+K">A. K. Thompson</a>, <a href="/search/physics?searchtype=author&query=Wietfeldt%2C+F+E">F. E. Wietfeldt</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1603.00243v2-abstract-short" style="display: inline;"> The standard model predicts that, in addition to a proton, an electron, and an antineutrino, a continuous spectrum of photons is emitted in the $尾$ decay of the free neutron. We report on the RDK II experiment which measured the photon spectrum using two different detector arrays. An annular array of bismuth germanium oxide scintillators detected photons from 14 to 782~keV. The spectral shape was… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.00243v2-abstract-full').style.display = 'inline'; document.getElementById('1603.00243v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.00243v2-abstract-full" style="display: none;"> The standard model predicts that, in addition to a proton, an electron, and an antineutrino, a continuous spectrum of photons is emitted in the $尾$ decay of the free neutron. We report on the RDK II experiment which measured the photon spectrum using two different detector arrays. An annular array of bismuth germanium oxide scintillators detected photons from 14 to 782~keV. The spectral shape was consistent with theory, and we determined a branching ratio of 0.00335 $\pm$ 0.00005 [stat] $\pm$ 0.00015 [syst]. A second detector array of large area avalanche photodiodes directly detected photons from 0.4 to 14~keV. For this array, the spectral shape was consistent with theory, and the branching ratio was determined to be 0.00582 $\pm$ 0.00023 [stat] $\pm$ 0.00062 [syst]. We report the first precision test of the shape of the photon energy spectrum from neutron radiative decay and a substantially improved determination of the branching ratio over a broad range of photon energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.00243v2-abstract-full').style.display = 'none'; document.getElementById('1603.00243v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 116, 242501 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1510.07607">arXiv:1510.07607</a> <span> [<a href="https://arxiv.org/pdf/1510.07607">pdf</a>, <a href="https://arxiv.org/format/1510.07607">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/11/01/P01006">10.1088/1748-0221/11/01/P01006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Development and Characterization of a High Sensitivity Segmented Fast Neutron Spectrometer (FaNS-2) </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=FaNS+Collaboration"> FaNS Collaboration</a>, <a href="/search/physics?searchtype=author&query=Langford%2C+T+J">T. J. Langford</a>, <a href="/search/physics?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Heimbach%2C+C+R">C. R. Heimbach</a>, <a href="/search/physics?searchtype=author&query=Ji%2C+G">G. Ji</a>, <a href="/search/physics?searchtype=author&query=Nico%2C+J+S">J. S. Nico</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1510.07607v1-abstract-short" style="display: inline;"> We present the development of a segmented fast neutron spectrometer (FaNS-2) based upon plastic scintillator and $^3$He proportional counters. It was designed to measure both the flux and spectrum of fast neutrons in the energy range of few MeV to 1 GeV. FaNS-2 utilizes capture-gated spectroscopy to identify neutron events and reject backgrounds. Neutrons deposit energy in the plastic scintillator… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1510.07607v1-abstract-full').style.display = 'inline'; document.getElementById('1510.07607v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1510.07607v1-abstract-full" style="display: none;"> We present the development of a segmented fast neutron spectrometer (FaNS-2) based upon plastic scintillator and $^3$He proportional counters. It was designed to measure both the flux and spectrum of fast neutrons in the energy range of few MeV to 1 GeV. FaNS-2 utilizes capture-gated spectroscopy to identify neutron events and reject backgrounds. Neutrons deposit energy in the plastic scintillator before capturing on a $^3$He nucleus in the proportional counters. Segmentation improves neutron energy reconstruction while the large volume of scintillator increases sensitivity to low neutron fluxes. A main goal of its design is to study comparatively low neutron fluxes, such as cosmogenic neutrons at the Earth's surface, in an underground environment, or from low-activity neutron sources. In this paper, we present details of its design and construction as well as its characterization with a calibrated $^{252}$Cf source and monoenergetic neutron fields of 2.5 MeV and 14 MeV. Detected monoenergetic neutron spectra are unfolded using a Singular Value Decomposition method, demonstrating a 5% energy resolution at 14 MeV. Finally, we discuss plans for measuring the surface and underground cosmogenic neutron spectra with FaNS-2. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1510.07607v1-abstract-full').style.display = 'none'; document.getElementById('1510.07607v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 October, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages, 13 figures, Submitted to JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2016 JINST 11 P01006 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1505.00165">arXiv:1505.00165</a> <span> [<a href="https://arxiv.org/pdf/1505.00165">pdf</a>, <a href="https://arxiv.org/format/1505.00165">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2014.11.002">10.1016/j.nima.2014.11.002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nonproportionality in the scintillation light yield of bismuth germanate </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Gentile%2C+T+R">T. R. Gentile</a>, <a href="/search/physics?searchtype=author&query=Bales%2C+M+J">M. J. Bales</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Chupp%2C+T+E">T. E. Chupp</a>, <a href="/search/physics?searchtype=author&query=Coakley%2C+K+J">K. J. Coakley</a>, <a href="/search/physics?searchtype=author&query=Cooper%2C+R+L">R. L. Cooper</a>, <a href="/search/physics?searchtype=author&query=Nico%2C+J+S">J. S. Nico</a>, <a href="/search/physics?searchtype=author&query=O%27Neill%2C+B">B. O'Neill</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1505.00165v1-abstract-short" style="display: inline;"> We present measurements of nonproportionality in the scintillation light yield of bismuth germanate (BGO) for gamma-rays with energies between 6 keV and 662 keV. The scintillation light was read out by avalanche photodiodes (APDs) with both the BGO crystals and APDs operated at a temperature of approximately 90 K. Data were obtained using radioisotope sources to illuminate both a single BGO crysta… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.00165v1-abstract-full').style.display = 'inline'; document.getElementById('1505.00165v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.00165v1-abstract-full" style="display: none;"> We present measurements of nonproportionality in the scintillation light yield of bismuth germanate (BGO) for gamma-rays with energies between 6 keV and 662 keV. The scintillation light was read out by avalanche photodiodes (APDs) with both the BGO crystals and APDs operated at a temperature of approximately 90 K. Data were obtained using radioisotope sources to illuminate both a single BGO crystal in a small test cryostat and a 12-element detector in a neutron radiative beta-decay experiment. In addition one datum was obtained in a 4.6 T magnetic field based on the bismuth K x-ray escape peak produced by a continuum of background gamma rays in this apparatus. These measurements and comparison to prior results were motivated by an experiment to study the radiative decay mode of the free neutron. The combination of data taken under different conditions yields a reasonably consistent picture for BGO nonproportionality that should be useful for researchers employing BGO detectors at low gamma ray energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.00165v1-abstract-full').style.display = 'none'; document.getElementById('1505.00165v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instrum. Meth. A 784 (2015) 88-92 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1407.6601">arXiv:1407.6601</a> <span> [<a href="https://arxiv.org/pdf/1407.6601">pdf</a>, <a href="https://arxiv.org/format/1407.6601">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2014.10.060">10.1016/j.nima.2014.10.060 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Fast Neutron Detection with a Segmented Spectrometer </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Langford%2C+T+J">T. J. Langford</a>, <a href="/search/physics?searchtype=author&query=Bass%2C+C+D">C. D. Bass</a>, <a href="/search/physics?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Erwin%2C+D+K">D. K. Erwin</a>, <a href="/search/physics?searchtype=author&query=Heimbach%2C+C+R">C. R. Heimbach</a>, <a href="/search/physics?searchtype=author&query=Nico%2C+J+S">J. S. Nico</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1407.6601v2-abstract-short" style="display: inline;"> A fast neutron spectrometer consisting of segmented plastic scintillator and He-3 proportional counters was constructed for the measurement of neutrons in the energy range 1 MeV to 200 MeV. We discuss its design, principles of operation, and the method of analysis. The detector is capable of observing very low neutron fluxes in the presence of ambient gamma background and does not require scintill… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1407.6601v2-abstract-full').style.display = 'inline'; document.getElementById('1407.6601v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1407.6601v2-abstract-full" style="display: none;"> A fast neutron spectrometer consisting of segmented plastic scintillator and He-3 proportional counters was constructed for the measurement of neutrons in the energy range 1 MeV to 200 MeV. We discuss its design, principles of operation, and the method of analysis. The detector is capable of observing very low neutron fluxes in the presence of ambient gamma background and does not require scintillator pulseshape discrimination. The spectrometer was characterized for its energy response in fast neutron fields of 2.5 MeV and 14 MeV, and the results are compared with Monte Carlo simulations. Measurements of the fast neutron flux and energy response at 120 m above sea-level (39.130 deg. N, 77.218 deg. W) and at a depth of 560 m in a limestone mine are presented. Finally, the design of a spectrometer with improved sensitivity and energy resolution is discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1407.6601v2-abstract-full').style.display = 'none'; document.getElementById('1407.6601v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 November, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 July, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 9 figures, published in NIM A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> NIM A 771 (2015) 78-87 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1311.4489">arXiv:1311.4489</a> <span> [<a href="https://arxiv.org/pdf/1311.4489">pdf</a>, <a href="https://arxiv.org/format/1311.4489">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/nphys2829">10.1038/nphys2829 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Local Detection of Quantum Correlations with a Single Trapped Ion </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Gessner%2C+M">M. Gessner</a>, <a href="/search/physics?searchtype=author&query=Ramm%2C+M">M. Ramm</a>, <a href="/search/physics?searchtype=author&query=Pruttivarasin%2C+T">T. Pruttivarasin</a>, <a href="/search/physics?searchtype=author&query=Buchleitner%2C+A">A. Buchleitner</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H+-">H. -P. Breuer</a>, <a href="/search/physics?searchtype=author&query=Haeffner%2C+H">H. Haeffner</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1311.4489v2-abstract-short" style="display: inline;"> As one of the most striking features of quantum mechanics, quantum correlations are at the heart of quantum information science. Detection of correlations usually requires access to all the correlated subsystems. However, in many realistic scenarios this is not feasible since only some of the subsystems can be controlled and measured. Such cases can be treated as open quantum systems interacting w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.4489v2-abstract-full').style.display = 'inline'; document.getElementById('1311.4489v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1311.4489v2-abstract-full" style="display: none;"> As one of the most striking features of quantum mechanics, quantum correlations are at the heart of quantum information science. Detection of correlations usually requires access to all the correlated subsystems. However, in many realistic scenarios this is not feasible since only some of the subsystems can be controlled and measured. Such cases can be treated as open quantum systems interacting with an inaccessible environment. Initial system-environment correlations play a fundamental role for the dynamics of open quantum systems. Following a recent proposal, we exploit the impact of the correlations on the open-system dynamics to detect system-environment quantum correlations without accessing the environment. We use two degrees of freedom of a trapped ion to model an open system and its environment. The present method does not require any assumptions about the environment, the interaction or the initial state and therefore provides a versatile tool for the study of quantum systems. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1311.4489v2-abstract-full').style.display = 'none'; document.getElementById('1311.4489v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 August, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 November, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 Pages, 5 Figures + 6 Pages, 1 Figure of Supplementary Material</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature Physics 10, 105 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1212.4724">arXiv:1212.4724</a> <span> [<a href="https://arxiv.org/pdf/1212.4724">pdf</a>, <a href="https://arxiv.org/format/1212.4724">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2013.03.062">10.1016/j.nima.2013.03.062 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Event Identification in $^3$He Proportional Counters Using Risetime Discrimination </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Langford%2C+T+J">T. J. Langford</a>, <a href="/search/physics?searchtype=author&query=Bass%2C+C+D">C. D. Bass</a>, <a href="/search/physics?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Erwin%2C+D+K">D. K. Erwin</a>, <a href="/search/physics?searchtype=author&query=Heimbach%2C+C+R">C. R. Heimbach</a>, <a href="/search/physics?searchtype=author&query=Nico%2C+J+S">J. S. Nico</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1212.4724v1-abstract-short" style="display: inline;"> We present a straightforward method for particle identification and background rejection in $^3$He proportional counters for use in neutron detection. By measuring the risetime and pulse height of the preamplifier signals, one may define a region in the risetime versus pulse height space where the events are predominately from neutron interactions. For six proportional counters surveyed in a low-b… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.4724v1-abstract-full').style.display = 'inline'; document.getElementById('1212.4724v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1212.4724v1-abstract-full" style="display: none;"> We present a straightforward method for particle identification and background rejection in $^3$He proportional counters for use in neutron detection. By measuring the risetime and pulse height of the preamplifier signals, one may define a region in the risetime versus pulse height space where the events are predominately from neutron interactions. For six proportional counters surveyed in a low-background environment, we demonstrate the ability to reject alpha-particle events with an efficiency of 99%. By applying the same method, we also show an effective rejection of microdischarge noise events that, when passed through a shaping amplifier, are indistinguishable from physical events in the counters. The primary application of this method is in measurements where the signal-to-background for counting neutrons is very low, such as in underground laboratories. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.4724v1-abstract-full').style.display = 'none'; document.getElementById('1212.4724v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 December, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 7 figures, Submitted to Nuclear Instruments and Methods A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1207.4505">arXiv:1207.4505</a> <span> [<a href="https://arxiv.org/pdf/1207.4505">pdf</a>, <a href="https://arxiv.org/format/1207.4505">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2012.06.018">10.1016/j.nima.2012.06.018 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A gamma- and X-ray detector for cryogenic, high magnetic field applications </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Cooper%2C+R+L">R. L. Cooper</a>, <a href="/search/physics?searchtype=author&query=Alarcon%2C+R">R. Alarcon</a>, <a href="/search/physics?searchtype=author&query=Bales%2C+M+J">M. J. Bales</a>, <a href="/search/physics?searchtype=author&query=Bass%2C+C+D">C. D. Bass</a>, <a href="/search/physics?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Byrne%2C+J">J. Byrne</a>, <a href="/search/physics?searchtype=author&query=Chupp%2C+T+E">T. E. Chupp</a>, <a href="/search/physics?searchtype=author&query=Coakley%2C+K+J">K. J. Coakley</a>, <a href="/search/physics?searchtype=author&query=Dewey%2C+M+S">M. S. Dewey</a>, <a href="/search/physics?searchtype=author&query=Fu%2C+C">C. Fu</a>, <a href="/search/physics?searchtype=author&query=Gentile%2C+T+R">T. R. Gentile</a>, <a href="/search/physics?searchtype=author&query=Mumm%2C+H+P">H. P. Mumm</a>, <a href="/search/physics?searchtype=author&query=Nico%2C+J+S">J. S. Nico</a>, <a href="/search/physics?searchtype=author&query=O%27Neill%2C+B">B. O'Neill</a>, <a href="/search/physics?searchtype=author&query=Pulliam%2C+K">K. Pulliam</a>, <a href="/search/physics?searchtype=author&query=Thompson%2C+A+K">A. K. Thompson</a>, <a href="/search/physics?searchtype=author&query=Wietfeldt%2C+F+E">F. E. Wietfeldt</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1207.4505v1-abstract-short" style="display: inline;"> As part of an experiment to measure the spectrum of photons emitted in beta-decay of the free neutron, we developed and operated a detector consisting of 12 bismuth germanate (BGO) crystals coupled to avalanche photodiodes (APDs). The detector was operated near liquid nitrogen temperature in the bore of a superconducting magnet and registered photons with energies from 5 keV to 1000 keV. To enlarg… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.4505v1-abstract-full').style.display = 'inline'; document.getElementById('1207.4505v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1207.4505v1-abstract-full" style="display: none;"> As part of an experiment to measure the spectrum of photons emitted in beta-decay of the free neutron, we developed and operated a detector consisting of 12 bismuth germanate (BGO) crystals coupled to avalanche photodiodes (APDs). The detector was operated near liquid nitrogen temperature in the bore of a superconducting magnet and registered photons with energies from 5 keV to 1000 keV. To enlarge the detection range, we also directly detected soft X-rays with energies between 0.2 keV and 20 keV with three large area APDs. The construction and operation of the detector is presented, as well as information on operation of APDs at cryogenic temperatures. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.4505v1-abstract-full').style.display = 'none'; document.getElementById('1207.4505v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 July, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2012. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1206.4036">arXiv:1206.4036</a> <span> [<a href="https://arxiv.org/pdf/1206.4036">pdf</a>, <a href="https://arxiv.org/format/1206.4036">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.apradiso.2013.03.053">10.1016/j.apradiso.2013.03.053 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Characterization of a Li-6 loaded liquid organic scintillator for fast neutron spectrometry and thermal neutron detection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bass%2C+C+D">C. D. Bass</a>, <a href="/search/physics?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Heimbach%2C+C+R">C. R. Heimbach</a>, <a href="/search/physics?searchtype=author&query=Langford%2C+T">T. Langford</a>, <a href="/search/physics?searchtype=author&query=Nico%2C+J+S">J. S. Nico</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1206.4036v2-abstract-short" style="display: inline;"> The characterization of a liquid scintillator incorporating an aqueous solution of enriched lithium chloride to produce a scintillator with 0.40% Li-6 is presented, including the performance of the scintillator in terms of its optical properties and neutron response. The scintillator was incorporated into a fast neutron spectrometer, and the light output spectra from 2.5 MeV, 14.1 MeV, and Cf-252… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1206.4036v2-abstract-full').style.display = 'inline'; document.getElementById('1206.4036v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1206.4036v2-abstract-full" style="display: none;"> The characterization of a liquid scintillator incorporating an aqueous solution of enriched lithium chloride to produce a scintillator with 0.40% Li-6 is presented, including the performance of the scintillator in terms of its optical properties and neutron response. The scintillator was incorporated into a fast neutron spectrometer, and the light output spectra from 2.5 MeV, 14.1 MeV, and Cf-252 neutrons were measured using capture-gated coincidence techniques. The spectrometer was operated without coincidence to perform thermal neutron measurements. Possible improvements in spectrometer performance are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1206.4036v2-abstract-full').style.display = 'none'; document.getElementById('1206.4036v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 February, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 June, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Applied Radiation and Isotopes. 11 pages, 7 figures, 3 tables. Revision addresses reviewers' comments</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Appl. Radiat. Isot. 77 (2013) 130-138 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1103.0761">arXiv:1103.0761</a> <span> [<a href="https://arxiv.org/pdf/1103.0761">pdf</a>, <a href="https://arxiv.org/format/1103.0761">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2011.04.031">10.1016/j.nima.2011.04.031 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The G0 Experiment: Apparatus for Parity-Violating Electron Scattering Measurements at Forward and Backward Angles </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=G0+Collaboration"> G0 Collaboration</a>, <a href="/search/physics?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/physics?searchtype=author&query=Armstrong%2C+D+S">D. S. Armstrong</a>, <a href="/search/physics?searchtype=author&query=Arvieux%2C+J">J. Arvieux</a>, <a href="/search/physics?searchtype=author&query=Asaturyan%2C+R">R. Asaturyan</a>, <a href="/search/physics?searchtype=author&query=Averett%2C+T+D">T. D. Averett</a>, <a href="/search/physics?searchtype=author&query=Bailey%2C+S+L">S. L. Bailey</a>, <a href="/search/physics?searchtype=author&query=Batigne%2C+G">G. Batigne</a>, <a href="/search/physics?searchtype=author&query=Beck%2C+D+H">D. H. Beck</a>, <a href="/search/physics?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/physics?searchtype=author&query=Benesch%2C+J">J. Benesch</a>, <a href="/search/physics?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</a>, <a href="/search/physics?searchtype=author&query=Bimbot%2C+L">L. Bimbot</a>, <a href="/search/physics?searchtype=author&query=Birchall%2C+J">J. Birchall</a>, <a href="/search/physics?searchtype=author&query=Biselli%2C+A">A. Biselli</a>, <a href="/search/physics?searchtype=author&query=Bosted%2C+P">P. Bosted</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Brindza%2C+P">P. Brindza</a>, <a href="/search/physics?searchtype=author&query=Capuano%2C+C+L">C. L. Capuano</a>, <a href="/search/physics?searchtype=author&query=Carlini%2C+R+D">R. D. Carlini</a>, <a href="/search/physics?searchtype=author&query=Carr%2C+R">R. Carr</a>, <a href="/search/physics?searchtype=author&query=Chant%2C+N">N. Chant</a>, <a href="/search/physics?searchtype=author&query=Chao%2C+Y+-">Y. -C. Chao</a>, <a href="/search/physics?searchtype=author&query=Clark%2C+R">R. Clark</a>, <a href="/search/physics?searchtype=author&query=Coppens%2C+A">A. Coppens</a> , et al. (105 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1103.0761v1-abstract-short" style="display: inline;"> In the G0 experiment, performed at Jefferson Lab, the parity-violating elastic scattering of electrons from protons and quasi-elastic scattering from deuterons is measured in order to determine the neutral weak currents of the nucleon. Asymmetries as small as 1 part per million in the scattering of a polarized electron beam are determined using a dedicated apparatus. It consists of specialized bea… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1103.0761v1-abstract-full').style.display = 'inline'; document.getElementById('1103.0761v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1103.0761v1-abstract-full" style="display: none;"> In the G0 experiment, performed at Jefferson Lab, the parity-violating elastic scattering of electrons from protons and quasi-elastic scattering from deuterons is measured in order to determine the neutral weak currents of the nucleon. Asymmetries as small as 1 part per million in the scattering of a polarized electron beam are determined using a dedicated apparatus. It consists of specialized beam-monitoring and control systems, a cryogenic hydrogen (or deuterium) target, and a superconducting, toroidal magnetic spectrometer equipped with plastic scintillation and aerogel Cerenkov detectors, as well as fast readout electronics for the measurement of individual events. The overall design and performance of this experimental system is discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1103.0761v1-abstract-full').style.display = 'none'; document.getElementById('1103.0761v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 March, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Nuclear Instruments and Methods</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instrum. Methods A 646 (2011)59 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0907.2172">arXiv:0907.2172</a> <span> [<a href="https://arxiv.org/pdf/0907.2172">pdf</a>, <a href="https://arxiv.org/format/0907.2172">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2009.09.029">10.1016/j.nima.2009.09.029 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Xenon Condenser with a Remote Liquid Storage Vessel </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Slutsky%2C+S">S. Slutsky</a>, <a href="/search/physics?searchtype=author&query=Yen%2C+Y+-">Y. -R. Yen</a>, <a href="/search/physics?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/physics?searchtype=author&query=Dobi%2C+A">A. Dobi</a>, <a href="/search/physics?searchtype=author&query=Hall%2C+C">C. Hall</a>, <a href="/search/physics?searchtype=author&query=Langford%2C+T">T. Langford</a>, <a href="/search/physics?searchtype=author&query=Leonard%2C+D+S">D. S. Leonard</a>, <a href="/search/physics?searchtype=author&query=Kaufman%2C+L+J">L. J. Kaufman</a>, <a href="/search/physics?searchtype=author&query=Strickland%2C+V">V. Strickland</a>, <a href="/search/physics?searchtype=author&query=Voskanian%2C+N">N. Voskanian</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0907.2172v2-abstract-short" style="display: inline;"> We describe the design and operation of a system for xenon liquefaction in which the condenser is separated from the liquid storage vessel. The condenser is cooled by a pulse tube cryocooler, while the vessel is cooled only by the liquid xenon itself. This arrangement facilitates liquid particle detector research by allowing easy access to the upper and lower flanges of the vessel. We find that… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0907.2172v2-abstract-full').style.display = 'inline'; document.getElementById('0907.2172v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0907.2172v2-abstract-full" style="display: none;"> We describe the design and operation of a system for xenon liquefaction in which the condenser is separated from the liquid storage vessel. The condenser is cooled by a pulse tube cryocooler, while the vessel is cooled only by the liquid xenon itself. This arrangement facilitates liquid particle detector research by allowing easy access to the upper and lower flanges of the vessel. We find that an external xenon gas pump is useful for increasing the rate at which cooling power is delivered to the vessel, and we present measurements of the power and efficiency of the apparatus. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0907.2172v2-abstract-full').style.display = 'none'; document.getElementById('0907.2172v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 July, 2009; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 July, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages, 7 figures Corrected typos in authors list</span> </p> </li> </ol> <div class="is-hidden-tablet">  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