The OLYMPUS Experiment
Nuclear Inst. and Methods in Physics Research, A (2014) pp. 1-17 The OLYMPUS experiment was designed to measure the ratio between the positron-proton and electron-proton elastic scattering cross sections, with the goal of determining the contribution of two-photon exchange to the elastic cross secti...
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| creator | Milner, R Hasell, D. K Kohl, M Schneekloth, U Akopov, N Alarcon, R Andreev, V. A Ates, O Avetisyan, A Bayadilov, D Beck, R Belostotski, S Bernauer, J. C Bessuille, J Brinker, F Buck, B Calarco, J. R Carassiti, V Cisbani, E Ciullo, G Contalbrigo, M D'Ascenzo, N De Leo, R Diefenbach, J Donnelly, T. W Dow, K Elbakian, G Eversheim, D Frullani, S Funke, Ch Gavrilov, G Gläser, B Görrissen, N Hauschildt, J Henderson, B. S Hoffmeister, Ph Holler, Y Ice, L. D Izotov, A Kaiser, R Karyan, G Kelsey, J Khaneft, D Klassen, P Kiselev, A Krivshich, A Lehmann, I Lenisa, P Lenz, D Lumsden, S Ma, Y Maas, F Marukyan, H Miklukho, O Movsisyan, A Murray, M Naryshkin, Y O'Connor, C Benito, R. Perez Perrino, R Redwine, R. P Piñeiro, D. Rodríguez Rosner, G Russell, R. L Schmidt, A Seitz, B Statera, M Thiel, A Vardanyan, H Veretennikov, D Vidal, C Winnebeck, A Yeganov, V |
| description | Nuclear Inst. and Methods in Physics Research, A (2014) pp. 1-17 The OLYMPUS experiment was designed to measure the ratio between the
positron-proton and electron-proton elastic scattering cross sections, with the
goal of determining the contribution of two-photon exchange to the elastic
cross section. Two-photon exchange might resolve the discrepancy between
measurements of the proton form factor ratio, $\mu_p G^p_E/G^p_M$, made using
polarization techniques and those made in unpolarized experiments. OLYMPUS
operated on the DORIS storage ring at DESY, alternating between 2.01~GeV
electron and positron beams incident on an internal hydrogen gas target. The
experiment used a toroidal magnetic spectrometer instrumented with drift
chambers and time-of-flight detectors to measure rates for elastic scattering
over the polar angular range of approximately $25^\circ$--$75^\circ$. Symmetric
M{\o}ller/Bhabha calorimeters at $1.29^\circ$ and telescopes of GEM and MWPC
detectors at $12^\circ$ served as luminosity monitors. A total luminosity of
approximately 4.5~fb$^{-1}$ was collected over two running periods in 2012.
This paper provides details on the accelerator, target, detectors, and
operation of the experiment. |
| doi_str_mv | 10.48550/arxiv.1312.1730 |
| format | Article |
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positron-proton and electron-proton elastic scattering cross sections, with the
goal of determining the contribution of two-photon exchange to the elastic
cross section. Two-photon exchange might resolve the discrepancy between
measurements of the proton form factor ratio, $\mu_p G^p_E/G^p_M$, made using
polarization techniques and those made in unpolarized experiments. OLYMPUS
operated on the DORIS storage ring at DESY, alternating between 2.01~GeV
electron and positron beams incident on an internal hydrogen gas target. The
experiment used a toroidal magnetic spectrometer instrumented with drift
chambers and time-of-flight detectors to measure rates for elastic scattering
over the polar angular range of approximately $25^\circ$--$75^\circ$. Symmetric
M{\o}ller/Bhabha calorimeters at $1.29^\circ$ and telescopes of GEM and MWPC
detectors at $12^\circ$ served as luminosity monitors. A total luminosity of
approximately 4.5~fb$^{-1}$ was collected over two running periods in 2012.
This paper provides details on the accelerator, target, detectors, and
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positron-proton and electron-proton elastic scattering cross sections, with the
goal of determining the contribution of two-photon exchange to the elastic
cross section. Two-photon exchange might resolve the discrepancy between
measurements of the proton form factor ratio, $\mu_p G^p_E/G^p_M$, made using
polarization techniques and those made in unpolarized experiments. OLYMPUS
operated on the DORIS storage ring at DESY, alternating between 2.01~GeV
electron and positron beams incident on an internal hydrogen gas target. The
experiment used a toroidal magnetic spectrometer instrumented with drift
chambers and time-of-flight detectors to measure rates for elastic scattering
over the polar angular range of approximately $25^\circ$--$75^\circ$. Symmetric
M{\o}ller/Bhabha calorimeters at $1.29^\circ$ and telescopes of GEM and MWPC
detectors at $12^\circ$ served as luminosity monitors. A total luminosity of
approximately 4.5~fb$^{-1}$ was collected over two running periods in 2012.
This paper provides details on the accelerator, target, detectors, and
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positron-proton and electron-proton elastic scattering cross sections, with the
goal of determining the contribution of two-photon exchange to the elastic
cross section. Two-photon exchange might resolve the discrepancy between
measurements of the proton form factor ratio, $\mu_p G^p_E/G^p_M$, made using
polarization techniques and those made in unpolarized experiments. OLYMPUS
operated on the DORIS storage ring at DESY, alternating between 2.01~GeV
electron and positron beams incident on an internal hydrogen gas target. The
experiment used a toroidal magnetic spectrometer instrumented with drift
chambers and time-of-flight detectors to measure rates for elastic scattering
over the polar angular range of approximately $25^\circ$--$75^\circ$. Symmetric
M{\o}ller/Bhabha calorimeters at $1.29^\circ$ and telescopes of GEM and MWPC
detectors at $12^\circ$ served as luminosity monitors. A total luminosity of
approximately 4.5~fb$^{-1}$ was collected over two running periods in 2012.
This paper provides details on the accelerator, target, detectors, and
operation of the experiment.</abstract><doi>10.48550/arxiv.1312.1730</doi><oa>free_for_read</oa></addata></record> |
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| identifier | DOI: 10.48550/arxiv.1312.1730 |
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| language | eng |
| recordid | cdi_arxiv_primary_1312_1730 |
| source | arXiv.org |
| subjects | Physics - Instrumentation and Detectors Physics - Nuclear Experiment |
| title | The OLYMPUS Experiment |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-08T03%3A22%3A07IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-arxiv_GOX&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20OLYMPUS%20Experiment&rft.au=Milner,%20R&rft.date=2013-12-05&rft_id=info:doi/10.48550/arxiv.1312.1730&rft_dat=%3Carxiv_GOX%3E1312_1730%3C/arxiv_GOX%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |