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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/2410.07257">arXiv:2410.07257</a> <span> [<a href="https://arxiv.org/pdf/2410.07257">pdf</a>, <a href="https://arxiv.org/ps/2410.07257">ps</a>, <a href="https://arxiv.org/format/2410.07257">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="High Energy Physics - Experiment">hep-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/10.3389/fdest.2024.1438902">10.3389/fdest.2024.1438902 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The muon beam monitor for the FAMU experiment: design, simulation, test and operation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Rossini%2C+R">R. Rossini</a>, <a href="/search/physics?searchtype=author&query=Baldazzi%2C+G">G. Baldazzi</a>, <a href="/search/physics?searchtype=author&query=Banfi%2C+S">S. Banfi</a>, <a href="/search/physics?searchtype=author&query=Baruzzo%2C+M">M. Baruzzo</a>, <a href="/search/physics?searchtype=author&query=Benocci%2C+R">R. Benocci</a>, <a href="/search/physics?searchtype=author&query=Bertoni%2C+R">R. Bertoni</a>, <a href="/search/physics?searchtype=author&query=Bonesini%2C+M">M. Bonesini</a>, <a href="/search/physics?searchtype=author&query=Carsi%2C+S">S. Carsi</a>, <a href="/search/physics?searchtype=author&query=Cirrincione%2C+D">D. Cirrincione</a>, <a href="/search/physics?searchtype=author&query=Clemenza%2C+M">M. Clemenza</a>, <a href="/search/physics?searchtype=author&query=Colace%2C+L">L. Colace</a>, <a href="/search/physics?searchtype=author&query=de+Bari%2C+A">A. de Bari</a>, <a href="/search/physics?searchtype=author&query=de+Vecchi%2C+C">C. de Vecchi</a>, <a href="/search/physics?searchtype=author&query=Fasci%2C+E">E. Fasci</a>, <a href="/search/physics?searchtype=author&query=Gaigher%2C+R">R. Gaigher</a>, <a href="/search/physics?searchtype=author&query=Gianfrani%2C+L">L. Gianfrani</a>, <a href="/search/physics?searchtype=author&query=Hillier%2C+A+D">A. D. Hillier</a>, <a href="/search/physics?searchtype=author&query=Ishida%2C+K">K. Ishida</a>, <a href="/search/physics?searchtype=author&query=King%2C+P+J+C">P. J. C. King</a>, <a href="/search/physics?searchtype=author&query=Lord%2C+J+S">J. S. Lord</a>, <a href="/search/physics?searchtype=author&query=Mazza%2C+R">R. Mazza</a>, <a href="/search/physics?searchtype=author&query=Menegolli%2C+A">A. Menegolli</a>, <a href="/search/physics?searchtype=author&query=Mocchiutti%2C+E">E. Mocchiutti</a>, <a href="/search/physics?searchtype=author&query=Monzani%2C+S">S. Monzani</a>, <a href="/search/physics?searchtype=author&query=Moretti%2C+L">L. Moretti</a> , et al. (13 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="2410.07257v1-abstract-short" style="display: inline;"> FAMU is an INFN-led muonic atom physics experiment based at the RIKEN-RAL muon facility at the ISIS Neutron and Muon Source (United Kingdom). The aim of FAMU is to measure the hyperfine splitting in muonic hydrogen to determine the value of the proton Zemach radius with accuracy better than 1%.The experiment has a scintillating-fibre hodoscope for beam monitoring and data normalisation. In order t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.07257v1-abstract-full').style.display = 'inline'; document.getElementById('2410.07257v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.07257v1-abstract-full" style="display: none;"> FAMU is an INFN-led muonic atom physics experiment based at the RIKEN-RAL muon facility at the ISIS Neutron and Muon Source (United Kingdom). The aim of FAMU is to measure the hyperfine splitting in muonic hydrogen to determine the value of the proton Zemach radius with accuracy better than 1%.The experiment has a scintillating-fibre hodoscope for beam monitoring and data normalisation. In order to carry out muon flux estimation, low-rate measurements were performed to extract the single-muon average deposited charge. Then, detector simulation in Geant4 and FLUKA allowed a thorough understanding of the single-muon response function, crucial for determining the muon flux. This work presents the design features of the FAMU beam monitor, along with the simulation and absolute calibration measurements in order to enable flux determination and enable data normalisation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.07257v1-abstract-full').style.display = 'none'; document.getElementById('2410.07257v1-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> 8 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Front. Detect. Sci. Technol., 05 August 2024 Volume 2 - 2024 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.16934">arXiv:2310.16934</a> <span> [<a href="https://arxiv.org/pdf/2310.16934">pdf</a>, <a href="https://arxiv.org/format/2310.16934">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Data Analysis, Statistics and Probability">physics.data-an</span> </div> </div> <p class="title is-5 mathjax"> Universal method to extract the average electron spin relaxation in organic semiconductors from muonium ALC resonances </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zhang%2C+L">Licheng Zhang</a>, <a href="/search/physics?searchtype=author&query=Lord%2C+J+S">J. S. Lord</a>, <a href="/search/physics?searchtype=author&query=Drew%2C+A+J">A. J. Drew</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="2310.16934v2-abstract-short" style="display: inline;"> Muon spin spectroscopy and in particular the avoid level crossing (ALC) technique is a sensitive probe of electron spin relaxation (eSR) in organic semiconductors. In complex ALC spectra, eSR can be challenging to extract, as it requires the modelling of overlapping ALCs, where covariance between parameters can result in significant uncertainties. Here we demonstrate a general method to extract eS… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.16934v2-abstract-full').style.display = 'inline'; document.getElementById('2310.16934v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.16934v2-abstract-full" style="display: none;"> Muon spin spectroscopy and in particular the avoid level crossing (ALC) technique is a sensitive probe of electron spin relaxation (eSR) in organic semiconductors. In complex ALC spectra, eSR can be challenging to extract, as it requires the modelling of overlapping ALCs, where covariance between parameters can result in significant uncertainties. Here we demonstrate a general method to extract eSR rate, which is independent on the number of ALCs resonances present, whether they overlap or not, and what the muonium hyperfine (isotropic and anisotropic) parameters are. This can then be used to extract an accurate value for eSR rate and as guidance for undertaking experiments efficiently <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.16934v2-abstract-full').style.display = 'none'; document.getElementById('2310.16934v2-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> 31 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1607.06145">arXiv:1607.06145</a> <span> [<a href="https://arxiv.org/pdf/1607.06145">pdf</a>, <a href="https://arxiv.org/ps/1607.06145">ps</a>, <a href="https://arxiv.org/format/1607.06145">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> </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/10.1063/1.4972827">10.1063/1.4972827 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The new high field photoexcitation muon spectrometer at the ISIS pulsed neutron and muon source </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Yokoyama%2C+K">K. Yokoyama</a>, <a href="/search/physics?searchtype=author&query=Lord%2C+J+S">J. S. Lord</a>, <a href="/search/physics?searchtype=author&query=Murahari%2C+P">P. Murahari</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+K">K. Wang</a>, <a href="/search/physics?searchtype=author&query=Dunstan%2C+D+J">D. J. Dunstan</a>, <a href="/search/physics?searchtype=author&query=Waller%2C+S+P">S. P. Waller</a>, <a href="/search/physics?searchtype=author&query=McPhail%2C+D+J">D. J. McPhail</a>, <a href="/search/physics?searchtype=author&query=Hillier%2C+A+D">A. D. Hillier</a>, <a href="/search/physics?searchtype=author&query=Henson%2C+J">J. Henson</a>, <a href="/search/physics?searchtype=author&query=Harper%2C+M+R">M. R. Harper</a>, <a href="/search/physics?searchtype=author&query=Heathcote%2C+P">P. Heathcote</a>, <a href="/search/physics?searchtype=author&query=Drew%2C+A+J">A. J. Drew</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="1607.06145v3-abstract-short" style="display: inline;"> A high power pulsed laser system has been installed on the high magnetic field muon spectrometer (HiFi) at the ISIS pulsed neutron and muon source, situated at the STFC Rutherford Appleton Laboratory in the UK. The upgrade enables one to perform light-pump muon-probe experiments under a high magnetic field, which opens new applications of muon spin spectroscopy. In this report we give an overview… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1607.06145v3-abstract-full').style.display = 'inline'; document.getElementById('1607.06145v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1607.06145v3-abstract-full" style="display: none;"> A high power pulsed laser system has been installed on the high magnetic field muon spectrometer (HiFi) at the ISIS pulsed neutron and muon source, situated at the STFC Rutherford Appleton Laboratory in the UK. The upgrade enables one to perform light-pump muon-probe experiments under a high magnetic field, which opens new applications of muon spin spectroscopy. In this report we give an overview of the principle of the HiFi Laser system, and describe the newly developed techniques and devices that enable precisely controlled photoexcitation of samples in the muon instrument. A demonstration experiment illustrates the potential of this unique combination of the photoexcited system and avoided level crossing technique. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1607.06145v3-abstract-full').style.display = 'none'; document.getElementById('1607.06145v3-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> 21 January, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 July, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2016. </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">12 pages, 7 figures, and 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Review of Scientific Instruments 87, 125111 (2016) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 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