CINXE.COM

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itemtype="http://data-vocabulary.org/Breadcrumb"> <span itemprop="title"><a href="/" class="easy-breadcrumb_segment easy-breadcrumb_segment-front">Home</a></span> <span class="easy-breadcrumb_segment-separator">»</span> <span class="easy-breadcrumb_segment easy-breadcrumb_segment-title" itemprop="title">Wide Angular-Range Chopper Spectrometer</span> </div> </div> </div> </div> </div> </div> </div> <div id="content-wrapper"> <div class="container"> <div id="columns"> <div class="columns-inner clearfix"> <div id="content-column" role="main"> <div class="content-inner"> <div id="main-content"> <div id="content"> <div class="region region-content"> <div class="panel-pane pane-views-panes pane-instrument-header-panel-pane-8 instrument-header no-title block" > <div class="pane-inner clearfix"> <div class="pane-content"> <div class="view view-instrument-header view-id-instrument_header view-display-id-panel_pane_8 view-dom-id-1ef65f24381da33da9b893fef5b6ec7e"> <div class="view-content"> <div class="views-row views-row-1"> <div class="views-field views-field-field-facility-acronym"> <div class="field-content"><h2>Wide Angular-Range Chopper Spectrometer</h2> <h2 class="small75">ARCS |  BL-18 | SNS</h2></div> </div> </div> </div> </div> </div> </div> </div> <div class="panel-separator"></div><div class="panel-pane pane-views-panes pane-instrument-header-panel-pane-9 instrument-header no-title block" > <div class="pane-inner clearfix"> <div class="pane-content"> <div class="view view-instrument-header view-id-instrument_header view-display-id-panel_pane_9 view-dom-id-01aeebab03de0b33e835a54949394d3f"> <div class="view-content"> <div class="views-row views-row-1"> <div class="views-field views-field-field-instrument-image"> <div class="field-content"><div class="nav-links"><ul id="instrumentNav"> <li><a href="/arcs">Overview</a></li> <li><a href="/arcs/team">Team</a></li> <li><a href="/arcs/users">User Guidance</a></li> <li><a href="/arcs/capabilities">Capabilities</a></li> <li><a href="/arcs/mail-in">Mail-in Program</a></li> <li><a href="https://monitor.sns.gov/dasmon/arcs/" target="_blank">Operating Status</a></li> <li><a href="/arcs/publications">Publications</a></li> <li><a href="/sites/default/files/ARCS_spec_sheet.pdf">Spec Sheet</a></li> <li><a href="/arcs/contact">Contact Us</a></li> <li><a href="https://portal10.ornl.gov/sites/ARCS/default.aspx">Internal Team Site</a></li> </ul> </div> <div class="image"><img class="image-style-page-width-1240w" src="https://neutrons.ornl.gov/sites/default/files/styles/page_width_1240w/public/bl-18_overview.jpg?itok=b6kZRsV3" width="1440" height="600" alt="Wide Angular-Range Chopper Spectrometer" title="Wide Angular-Range Chopper Spectrometer" /></div></div> </div> </div> </div> </div> </div> </div> </div> <div class="panel-separator"></div><section class="panel-pane pane-entity-field pane-node-field-instrument-mission block" > <div class="pane-inner clearfix"> <h2 class="pane-title block-title">Mission Statement</h2> <div class="pane-content"> <div class="field field-name-field-instrument-mission field-type-text-with-summary field-label-hidden view-mode-_custom_display"><div class="field-items"><div class="field-item even"><p>Illuminating excitations in condensed matter systems to enhance the fundamental understanding of dynamic processes in materials.</p> </div></div></div> </div> </div> </section> <div class="panel-separator"></div><section class="panel-pane pane-entity-field pane-node-body block" > <div class="pane-inner clearfix"> <h2 class="pane-title block-title">Instrument Description</h2> <div class="pane-content"> <div class="field field-name-body field-type-text-with-summary field-label-hidden view-mode-_custom_display"><div class="field-items"><div class="field-item even"><p>ARCS is optimized to provide a high neutron flux at the sample and a large solid angle of detector coverage. The spectrometer is capable of selecting incident energies from a wide range, making it useful for studies of excitations from a few to several hundred milli-electron volts. An elliptically shaped supermirror guide in the incident flight path boosts the performance at the lower end of this range. The sample and detector vacuum chambers provide a window-free final flight path and incorporate a large gate valve to allow rapid sample changeout. A T0 neutron chopper not only blocks the prompt radiation from the source but also eliminates unwanted neutrons from the incident beam line. An oscillating radial collimator can reduce the background from complex sample environment equipment.</p> </div></div></div> </div> </div> </section> <div class="panel-separator"></div><section class="panel-pane pane-entity-field pane-node-field-instrument-applications block" > <div class="pane-inner clearfix"> <h2 class="pane-title block-title">Applications</h2> <div class="pane-content"> <div class="field field-name-field-instrument-applications field-type-text-with-summary field-label-hidden view-mode-_custom_display"><div class="field-items"><div class="field-item even"><p>The increased sensitivity of ARCS offers new opportunities for scientific studies in:</p> <p><strong>Lattice Dynamics</strong></p> <ul> <li>Entropy and the effects of vibrational modes on stability and phase transitions of solids</li> <li>Excitations in disordered materials; effects of nanoscale features on vibrational entropy and thermodynamic stability</li> <li>Equations-of-state from the measured phonon density-of-states versus temperature and pressure</li> <li>Phonons in correlated-electron materials; coupling of lattice and electronic degrees of freedom in high Tc, heavy-fermion and mixed valence materials</li> </ul> <p><strong>Magnetic Dynamics</strong></p> <ul> <li>High-temperature superconductivity-spin dynamics in superconductors and precursor compounds and crystal field spectroscopy</li> <li>Low-dimensional systems; one-dimensional quantum magnets and low-dimensional conductors</li> <li>Magnetism in actinide materials; heavy fermion magnetism and superconductivity</li> </ul> <p><strong>Chemical Physics</strong></p> <ul> <li>Deep inelastic neutron scattering studies of hydrogen and helium</li> </ul> <p>Inelastic neutron scattering studies such as those conducted at ARCS can impact the development of important practical materials, such as ferroelectrics used in ultrasounds and thermoelectrics used to harvest energy from waste heat.</p> </div></div></div> </div> </div> </section> <div class="panel-separator"></div><div class="panel-pane pane-panels-mini pane-instrument-spec-contact no-title block" > <div class="pane-inner clearfix"> <div class="pane-content"> <div class="panel-flexible panels-flexible-85 clearfix" id="mini-panel-instrument_spec_contact"> <div class="panel-flexible-inside panels-flexible-85-inside"> <div class="panels-flexible-region panels-flexible-region-85-center panels-flexible-region-first"> <div class="inside panels-flexible-region-inside panels-flexible-region-85-center-inside panels-flexible-region-inside-first"> <section class="panel-pane pane-entity-field pane-node-field-instrument-specifications striped block" > <div class="pane-inner clearfix"> <h2 class="pane-title block-title">Specifications</h2> <div class="pane-content"> <div class="field field-name-field-instrument-specifications field-type-text-with-summary field-label-hidden view-mode-_custom_display"><div class="field-items"><div class="field-item even"><table> <tbody> <tr> <td>Moderator</td> <td>decoupled ambient water</td> </tr> <tr> <td>Source – Fermi chopper distance</td> <td>11.6 m</td> </tr> <tr> <td>Chopper – sample distance</td> <td>2.0 m</td> </tr> <tr> <td>Sample – detector distance</td> <td>3.0 m – 3.4 m cylindrical geometry</td> </tr> <tr> <td>Incident energy range</td> <td>10 – 1500 meV</td> </tr> <tr> <td>Resolution (elastic)</td> <td>3 – 5% E<sub>i</sub></td> </tr> <tr> <td>Detector coverage horizontal</td> <td>-28° – 135°</td> </tr> <tr> <td>Detector coverage vertical</td> <td>-27° – 26°</td> </tr> <tr> <td>Minimum detector angle</td> <td>3°</td> </tr> <tr> <td>Beam Size</td> <td>5 cm x 5 cm, with fully adjustable motorized slits in the horizontal and vertical directions</td> </tr> </tbody> </table> <p> </p> <p><a href="/sites/default/files/instruments/Sample_Environment_List_for_ARCS.pdf#overlay-context=arcs">Commonly used and well–characterized sample environment equipment List</a></p> </div></div></div> </div> </div> </section> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div id="post-content-wrapper"> <div class="container clearfix"> <div class="region region-post-content"> <section class="panel-pane pane-views-panes pane-instrument-team-panel-pane-1 instruments-team front-instruments block" > <div class="pane-inner clearfix"> <h2 class="pane-title block-title">Contacts</h2> <div class="pane-content"> <div class="view view-instrument-team view-id-instrument_team view-display-id-panel_pane_1 view-dom-id-c4b659b798713257650164d76d8e6008"> <div class="view-content"> <div class="views-fluid-grid"> <ul class="views-fluid-grid-list views-fluid-grid-items-width-250 views-fluid-grid-items-height-150 views-fluid-grid-items-h-margin-0-8em views-fluid-grid-items-v-margin-0-8em"> <li class="views-fluid-grid-inline views-fluid-grid-item views-row views-row-1 views-row-odd views-row-first"> <div class="views-field views-field-field-person-image"> <div class="field-content img-inst-scientist"><a href="/contacts/abernathydl"><img class="image-style-thumbnail--100x150-" src="https://neutrons.ornl.gov/sites/default/files/styles/thumbnail__100x150_/public/Portrait%20-%20Doug%20Abernathy-103_sm.jpg?itok=lHd39XD-" width="100" height="150" alt="Doug Abernathy" title="Doug Abernathy" /></a></div> </div> <div class="views-field views-field-field-instrument-team"> <div class="field-content"><a href="/contacts/abernathydl">Doug Abernathy</a></div> </div> <div class="views-field views-field-field-person-job-title"> <p class="field-content">Instrument Scientist</p> </div></li> <li class="views-fluid-grid-inline views-fluid-grid-item views-row views-row-2 views-row-even"> <div class="views-field views-field-field-person-image"> <div class="field-content img-inst-scientist"><a href="/contacts/granrothge"><img class="image-style-thumbnail--100x150-" src="https://neutrons.ornl.gov/sites/default/files/styles/thumbnail__100x150_/public/Garrett%20Granroth-0091_8x10.jpg?itok=66oetmHh" width="100" height="150" alt="Garrett Granroth" title="Garrett Granroth" /></a></div> </div> <div class="views-field views-field-field-instrument-team"> <div class="field-content"><a href="/contacts/granrothge">Garrett E. Granroth</a></div> </div> <div class="views-field views-field-field-person-job-title"> <p class="field-content">Instrument Scientist</p> </div></li> <li class="views-fluid-grid-inline views-fluid-grid-item views-row views-row-3 views-row-odd views-row-last"> <div class="views-field views-field-field-person-image"> <div class="field-content img-inst-scientist"><a href="/contacts/christian-balz"><img class="image-style-thumbnail--100x150-" src="https://neutrons.ornl.gov/sites/default/files/styles/thumbnail__100x150_/public/ChristianBalz.jpg?itok=wzIN37Tj" width="100" height="150" alt="Christian Balz" /></a></div> </div> <div class="views-field views-field-field-instrument-team"> <div class="field-content"><a href="/contacts/christian-balz">Christian Balz</a></div> </div> <div class="views-field views-field-field-person-job-title"> <p class="field-content">Neutron Scattering Scientist</p> </div></li> </ul> </div> </div> </div> </div> </div> </section> </div> </div> </div> <div id="pre-tertiary-content-wrapper"> <div class="container clearfix"> <div class="region region-pre-tertiary-content"> <section class="panel-pane pane-views-panes pane-articles-by-instrument-panel-pane-10 front-articles block" > <div class="pane-inner clearfix"> <h2 class="pane-title block-title">Related Highlights</h2> <div class="pane-content"> <div class="view view-articles-by-instrument view-id-articles_by_instrument view-display-id-panel_pane_10 view-dom-id-3d23afe52ea39d90670953dee54435e1"> <div class="view-content"> <div class="views-fluid-grid"> <ul class="views-fluid-grid-list views-fluid-grid-items-width-250 views-fluid-grid-items-height-250 views-fluid-grid-items-h-margin-1em views-fluid-grid-items-v-margin-1em"> <li class="views-fluid-grid-inline views-fluid-grid-item views-row views-row-1 views-row-odd views-row-first"> <div class="views-field views-field-field-image"> <div class="field-content"><a href="/content/spin-dynamics-skyrmion-magnet-gdru2si2"><img class="image-style-thirds-360x240" src="https://neutrons.ornl.gov/sites/default/files/styles/thirds_360x240/public/field/image/SpinDymanics.png?itok=F64Xe-aW" width="360" height="240" alt="" /></a></div> </div> <div class="views-field views-field-title"> <span class="field-content">Spin Dynamics of the Skyrmion Magnet GdRu2Si2</span> </div></li> <li class="views-fluid-grid-inline views-fluid-grid-item views-row views-row-2 views-row-even"> <div class="views-field views-field-field-image"> <div class="field-content"><a href="/content/three-pronged-approach-discerns-qualities-quantum-spin-liquids"><img class="image-style-thirds-360x240" src="https://neutrons.ornl.gov/sites/default/files/styles/thirds_360x240/public/field/image/KYS_PressReleaseImage_a.jpg?itok=2NPisCMH" width="360" height="240" alt="An illustration of the lattice examined by Phil Anderson in the early ‘70s. Shown as green ellipses," title="An illustration of the lattice examined by Phil Anderson in the early ‘70s. Shown as green ellipses, pairs of quantum particles fluctuated among multiple combinations to produce a spin liquid state. Credit: Allen Scheie/Los Alamos National Laboratory, U.S. Dept. of Energy" /></a></div> </div> <div class="views-field views-field-title"> <span class="field-content">Three-pronged approach discerns qualities of quantum spin liquids</span> </div></li> <li class="views-fluid-grid-inline views-fluid-grid-item views-row views-row-3 views-row-odd"> <div class="views-field views-field-field-image"> <div class="field-content"><a href="/content/spontaneous-anisotropy-cubic-thermoelectric-gete"><img class="image-style-thirds-360x240" src="https://neutrons.ornl.gov/sites/default/files/styles/thirds_360x240/public/field/image/SpontaneousAnisotrophy.png?itok=bDW-ceq8" width="360" height="240" alt="Spontaneous Anisotropy in Cubic Thermoelectric GeTe" title="Spontaneous Anisotropy in Cubic Thermoelectric GeTe" /></a></div> </div> <div class="views-field views-field-title"> <span class="field-content">Spontaneous Anisotropy in Cubic Thermoelectric GeTe</span> </div></li> <li class="views-fluid-grid-inline views-fluid-grid-item views-row views-row-4 views-row-even views-row-last"> <div class="views-field views-field-field-image"> <div class="field-content"><a href="/content/%E2%80%98neutron-camera%E2%80%99-method-captures-atomic-scale-activity-a-flash"><img class="image-style-thirds-360x240" src="https://neutrons.ornl.gov/sites/default/files/styles/thirds_360x240/public/field/image/23-G02345_VariableShutter.png?itok=gj0Gkihg" width="360" height="240" alt="‘Neutron camera’ method captures atomic-scale activity in a flash. " title="Artist’s conceptual drawing illustrates the novel energy filtering technique using neutrons that enabled researchers at Oak Ridge National Laboratory to freeze moving germanium telluride atoms in an unblurred image. The images offered key insights into how the material produces its outstanding thermoelectric performance. Credit: Jill Hemman/ORNL, U.S. Dept. of Energy " /></a></div> </div> <div class="views-field views-field-title"> <span class="field-content">‘Neutron camera’ method captures atomic-scale activity in a flash</span> </div></li> </ul> </div> </div> <div class="view-footer"> <p class="read-more"><a href="/all-news">Read more ></a></p> </div> </div> </div> </div> </section> </div> </div> </div> <div id="tertiary-content-wrapper"> <div class="container clearfix"> <div class="region region-tertiary-content"> <div class="panel-pane pane-custom pane-6 no-title block" > <div class="pane-inner clearfix"> <div class="pane-content"> <div class="footer-mega"> <div class="menu-column"> <div class="btn-group-contact"> <ul> <li class="address" style="text-transform: uppercase; font-size: 1.17em; margin-top:0;">Contact Us</a> </div> <div class="address"> Neutron Sciences Directorate<br> One Bethel Valley Rd<br> Oak Ridge, TN 37831<br> <br> Office Phone: 865-574-0558<br> <br> </div> </div> <div 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class="mmenu-block-title">Outreach and Education</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-6508 mmenu-mm-list-path-node-150178"><a href="/nxs" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Neutron Scattering School</span></a></li><li class="mmenu-mm-list-mlid-7821 mmenu-mm-list-path-node-147906"><a href="/neutron-scattering-graduate-program" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Neutron Scattering Graduate Research at ORNL</span></a></li><li class="mmenu-mm-list-mlid-7207 mmenu-mm-list-path-node-136265"><a href="/wins" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Women in Neutron Sciences (WiNS)</span></a></li><li class="mmenu-mm-list-mlid-7648 mmenu-mm-list-path-node-142046"><a href="/inside-the-innovations" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Inside The Innovations</span></a></li></ul></li><li class="mmenu-mm-list-mlid-5321 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Facilities</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-5322 mmenu-mm-list-path-node-956"><a href="/hfir" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">High Flux Isotope Reactor</span></a></li><li class="mmenu-mm-list-mlid-5323 mmenu-mm-list-path-node-957"><a href="/sns" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Spallation Neutron Source</span></a></li><li class="mmenu-mm-list-mlid-6029 mmenu-mm-list-path-node-135139"><a href="/lab" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">User Laboratories</span></a></li><li class="mmenu-mm-list-mlid-7779 mmenu-mm-list-path-node-145775"><a href="/virtual-tour" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">SNS - Take a Virtual Tour</span></a></li><li class="mmenu-mm-list-mlid-7806 mmenu-mm-list-path-node-146549"><a href="/klystron-virtual-tour" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">SNS Klystron Gallery - Take a Virtual Tour</span></a></li><li class="mmenu-mm-list-mlid-7803 mmenu-mm-list-path-node-146495"><a href="/hfir-virtual-tour" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">HFIR - Take a Virtual Tour</span></a></li></ul></li><li class="mmenu-mm-list-mlid-5324 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Divisions</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-5325 mmenu-mm-list-path-node-1399"><a href="/executive" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Executive Office</span></a></li><li class="mmenu-mm-list-mlid-5843 mmenu-mm-list-path-node-135053"><a href="/nsd" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Neutron Scattering Division</span></a></li><li class="mmenu-mm-list-mlid-5328 mmenu-mm-list-path-node-1148"><a href="/ntd" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Neutron Technologies Division</span></a></li><li class="mmenu-mm-list-mlid-5331 mmenu-mm-list-path-node-1151"><a href="/rad" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Research Accelerator Division</span></a></li><li class="mmenu-mm-list-mlid-5332 mmenu-mm-list-path-node-1153"><a href="/rrd" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Research Reactors Division</span></a></li></ul></li></ul></li><li class="mmenu-mm-list-mlid-5900 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Projects</span></a><ul class="mmenu-mm-list-level-2"><li class="mmenu-mm-list-mlid-5192 mmenu-mm-list-path-node-134066"><a href="/ppu" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Proton Power Upgrade</span></a></li><li class="mmenu-mm-list-mlid-5193 mmenu-mm-list-path-node-11460"><a href="/sts" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Second Target Station</span></a></li><li class="mmenu-mm-list-mlid-7810 mmenu-mm-list-path-node-146763"><a href="/hbrr" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">HFIR Beryllium Reflector Replacement</span></a></li><li class="mmenu-mm-list-mlid-7818 mmenu-mm-list-path-node-147454"><a href="/cgh" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">HFIR Cold Guide Hall Extension</span></a></li><li class="mmenu-mm-list-mlid-7837 mmenu-mm-list-path-https:--neutrons.ornl.gov-content-hfir-pressure-vessel-replacement-project"><a href="https://neutrons.ornl.gov/content/hfir-pressure-vessel-replacement-project" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">HFIR Pressure Vessel Replacement Project</span></a></li><li class="mmenu-mm-list-mlid-7811 mmenu-mm-list-path-node-146764"><a href="/future-venus" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">VENUS Neutron Imaging Beamline</span></a></li><li class="mmenu-mm-list-mlid-7812 mmenu-mm-list-path-node-146737"><a href="/hfir/hfir-sns-5-year-working-schedule" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">HFIR & SNS 5-Year Working Schedule</span></a></li></ul></li><li class="mmenu-mm-list-mlid-1905 mmenu-mm-list-path-node-135177"><a href="/future" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Future</span></a><ul class="mmenu-mm-list-level-2"><li class="mmenu-mm-list-mlid-5901 mmenu-mm-list-path-node-135177"><a href="/future" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Overview</span></a></li></ul></li><li class="mmenu-mm-list-mlid-759 mmenu-mm-list-path-node-447"><a href="/science" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Science</span></a><ul class="mmenu-mm-list-level-2"><li class="mmenu-mm-list-mlid-5902 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Science</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-5884 mmenu-mm-list-path-node-447"><a href="/science" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Overview</span></a></li><li class="mmenu-mm-list-mlid-7813 mmenu-mm-list-path-https:--neutrons.ornl.gov-all-news?field_news_type_tid=1133"><a href="https://neutrons.ornl.gov/all-news?field_news_type_tid=1133" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Science Highlights</span></a></li></ul></li><li class="mmenu-mm-list-mlid-5844 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Science Initiatives</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-5194 mmenu-mm-list-path-node-1403"><a href="/science/biological-materials-systems" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Biological Materials and Systems</span></a></li><li class="mmenu-mm-list-mlid-5885 mmenu-mm-list-path-node-135150"><a href="/science/catalasys" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Chemistry, Geochemistry and Environmental Science</span></a></li><li class="mmenu-mm-list-mlid-5196 mmenu-mm-list-path-node-1422"><a href="/science/modeling" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Computing, Modeling, and Data Analytics</span></a></li><li class="mmenu-mm-list-mlid-7586 mmenu-mm-list-path-node-138600"><a href="/science/matter-under-extremes" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Physics of Matter under Extremes</span></a></li><li class="mmenu-mm-list-mlid-5195 mmenu-mm-list-path-node-1401"><a href="/science/materials-engineering" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Materials and Engineering</span></a></li><li class="mmenu-mm-list-mlid-5197 mmenu-mm-list-path-node-1400"><a href="/science/quantum-materials" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Quantum Materials</span></a></li><li class="mmenu-mm-list-mlid-5198 mmenu-mm-list-path-node-1402"><a href="/science/soft-matter" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Soft Matter and Polymers</span></a></li></ul></li><li class="mmenu-mm-list-mlid-5845 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Science Techniques</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-5979 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Neutron Scattering</span></a><ul class="mmenu-mm-list-level-4"><li class="mmenu-mm-list-mlid-5850 mmenu-mm-list-path-node-134007"><a href="/suites/diffraction" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Diffraction</span></a></li><li class="mmenu-mm-list-mlid-5846 mmenu-mm-list-path-node-134010"><a href="/suites/imaging" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Imaging</span></a></li><li class="mmenu-mm-list-mlid-5848 mmenu-mm-list-path-node-134006"><a href="/suites/reflectometry" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Reflectometry</span></a></li><li class="mmenu-mm-list-mlid-5847 mmenu-mm-list-path-node-134135"><a href="/suites/small-angle-neutron-scattering" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Small Angle Neutron Scattering</span></a></li><li class="mmenu-mm-list-mlid-5849 mmenu-mm-list-path-node-134011"><a href="/suites/spectroscopy" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Spectroscopy</span></a></li></ul></li><li class="mmenu-mm-list-mlid-5980 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Nuclear</span></a><ul class="mmenu-mm-list-level-4"><li class="mmenu-mm-list-mlid-5886 mmenu-mm-list-path-node-135151"><a href="/suites/gamma-irradiation" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Gamma Irradiation</span></a></li><li class="mmenu-mm-list-mlid-5887 mmenu-mm-list-path-node-135152"><a href="/suites/in-vessel-irradiation" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">In-Vessel Irradiation</span></a></li><li class="mmenu-mm-list-mlid-5888 mmenu-mm-list-path-node-135153"><a href="/suites/nuclear-forensics" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Nuclear Forensics (Neutron Activation Analysis)</span></a></li></ul></li></ul></li></ul></li><li class="mmenu-mm-list-mlid-757 mmenu-mm-list-path-node-445"><a href="/users" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">For Users</span></a><ul class="mmenu-mm-list-level-2"><li class="mmenu-mm-list-mlid-5903 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Introduction</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-5891 mmenu-mm-list-path-node-445"><a href="/users" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Overview</span></a></li><li class="mmenu-mm-list-mlid-5892 mmenu-mm-list-path-node-445"><a href="/users" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Contact Us</span></a></li></ul></li><li class="mmenu-mm-list-mlid-6134 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Become A User</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-6137 mmenu-mm-list-path-node-135209"><a href="/users/how-submit-proposal" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">How to Submit a Proposal</span></a></li><li class="mmenu-mm-list-mlid-5439 mmenu-mm-list-path-node-1419"><a href="/users/proposal-types" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Proposal Types</span></a></li><li class="mmenu-mm-list-mlid-5445 mmenu-mm-list-path-node-1393"><a href="/users/tips" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Writing Your Statement of Research</span></a></li><li class="mmenu-mm-list-mlid-6139 mmenu-mm-list-path-node-135211"><a href="/users/ipts-checklist" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">IPTS Proposal Form</span></a></li><li class="mmenu-mm-list-mlid-6136 mmenu-mm-list-path-https:--snsapp1.sns.ornl.gov-xprod-f?p=100:1"><a href="https://snsapp1.sns.ornl.gov/xprod/f?p=100:1" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Integrated Proposal Tracking System (IPTS)</span></a></li><li class="mmenu-mm-list-mlid-7768 mmenu-mm-list-path-node-145454"><a href="/users/proposal-statistics" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Proposal Statistics</span></a></li><li class="mmenu-mm-list-mlid-7769 mmenu-mm-list-path-node-145477"><a href="/users/proposal-calls" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Proposal Calls</span></a></li></ul></li><li class="mmenu-mm-list-mlid-6135 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">User Guide</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-6140 mmenu-mm-list-path-node-135207"><a href="/users/plan-your-visit" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Plan Your Visit</span></a></li><li class="mmenu-mm-list-mlid-6236 mmenu-mm-list-path-node-135631"><a href="/users/plan-your-visit-chk" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Plan Your Visit Checklist</span></a></li><li class="mmenu-mm-list-mlid-6141 mmenu-mm-list-path-node-135212"><a href="/users/shipping-guide" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Shipping Guide</span></a></li><li class="mmenu-mm-list-mlid-6142 mmenu-mm-list-path-node-135213"><a href="/users/onsite" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Onsite at ORNL</span></a></li><li class="mmenu-mm-list-mlid-6235 mmenu-mm-list-path-node-135630"><a href="/users/after-experiment" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">After Your Experiment</span></a></li><li class="mmenu-mm-list-mlid-7817 mmenu-mm-list-path-node-147354"><a href="/users/user-guide-remote-experiments" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">User Guide to Remote Experiments</span></a></li></ul></li><li class="mmenu-mm-list-mlid-6576 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span class="mmenu-block-title">Support</span></a><ul class="mmenu-mm-list-level-3"><li class="mmenu-mm-list-mlid-6143 mmenu-mm-list-path-node-135214"><a href="/users/data-management" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Data Management</span></a></li><li class="mmenu-mm-list-mlid-5876 mmenu-mm-list-path-node-13591"><a href="/sample" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">Sample Environment</span></a></li><li class="mmenu-mm-list-mlid-6577 mmenu-mm-list-path-node-135139"><a href="/lab" class="mmenu-mm-list "><i class="icon-list2"></i><span class="mmenu-block-title">User Laboratories</span></a></li></ul></li><li class="mmenu-mm-list-mlid-6126 mmenu-mm-list-path-nolink"><a href="javascript:void(0);" class="mmenu-mm-list mmenu-mm-subopen"><i class="icon-plus"></i><span 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