The OLYMPUS experiment

R. Milner; D. K. Hasell; M. Kohl; U. Schneekloth; N. Akopov; Ricardo Alarcon; V. A. Andreev; O. Ates; A. Avetisyan; D. Bayadilov; R. Beck; S. Belostotski; J. C. Bernauer; J. Bessuille; F. Brinker; B. Buck; J. R. Calarco; V. Carassiti; E. Cisbani; G. Ciullo; M. Contalbrigo; N. D'Ascenzo; R. De Leo; J. Diefenbach; T. W. Donnelly; K. Dow; G. Elbakian; D. Eversheim; S. Frullani; Ch Funke; G. Gavrilov; B. Gläser; N. Görrissen; J. Hauschildt; B. S. Henderson; Ph Hoffmeister; Y. Holler; L. D. Ice; A. Izotov; R. Kaiser; G. Karyan; J. Kelsey; D. Khaneft; P. Klassen; A. Kiselev; A. Krivshich; I. Lehmann; P. Lenisa; D. Lenz; S. Lumsden; Y. Ma; F. Maas; H. Marukyan; O. Miklukho; A. Movsisyan; M. Murray; Y. Naryshkin; C. O'Connor; R. Perez Benito; R. Perrino; R. P. Redwine; D. Rodríguez Piñeiro; G. Rosner; R. L. Russell; A. Schmidt; B. Seitz; M. Statera; A. Thiel; H. Vardanyan; D. Veretennikov; C. Vidal; A. Winnebeck; V. Yeganov

doi:10.1016/j.nima.2013.12.035

The OLYMPUS experiment

R. Milner, D. K. Hasell, M. Kohl, U. Schneekloth, N. Akopov, Ricardo Alarcon, V. A. Andreev, O. Ates, A. Avetisyan, D. Bayadilov, R. Beck, S. Belostotski, J. C. Bernauer, J. Bessuille, F. Brinker, B. Buck, J. R. Calarco, V. Carassiti, E. Cisbani, G. CiulloM. Contalbrigo, N. D'Ascenzo, R. De Leo, J. Diefenbach, T. W. Donnelly, K. Dow, G. Elbakian, D. Eversheim, S. Frullani, Ch Funke, G. Gavrilov, B. Gläser, N. Görrissen, J. Hauschildt, B. S. Henderson, Ph Hoffmeister, Y. Holler, L. D. Ice, A. Izotov, R. Kaiser, G. Karyan, J. Kelsey, D. Khaneft, P. Klassen, A. Kiselev, A. Krivshich, I. Lehmann, P. Lenisa, D. Lenz, S. Lumsden, Y. Ma, F. Maas, H. Marukyan, O. Miklukho, A. Movsisyan, M. Murray, Y. Naryshkin, C. O'Connor, R. Perez Benito, R. Perrino, R. P. Redwine, D. Rodríguez Piñeiro, G. Rosner, R. L. Russell, A. Schmidt, B. Seitz, M. Statera, A. Thiel, H. Vardanyan, D. Veretennikov, C. Vidal, A. Winnebeck, V. Yeganov

Physics

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37 Scopus citations

Abstract

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, ^μpGEp/GMp, 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 -75. Symmetric Møller/Bhabha calorimeters at 1.29 and telescopes of GEM and MWPC detectors at 12 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.

Original language	English (US)
Pages (from-to)	1-17
Number of pages	17
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	741
DOIs	https://doi.org/10.1016/j.nima.2013.12.035
State	Published - Mar 21 2014

Keywords

Elastic electron scattering
Elastic positron scattering
Form-factor ratio
Two-photon exchange

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2013.12.035

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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., ... Yeganov, V. (2014). The OLYMPUS experiment. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 741, 1-17. https://doi.org/10.1016/j.nima.2013.12.035

Milner, R, Hasell, DK, Kohl, M, Schneekloth, U, Akopov, N, Alarcon, R, Andreev, VA, Ates, O, Avetisyan, A, Bayadilov, D, Beck, R, Belostotski, S, Bernauer, JC, Bessuille, J, Brinker, F, Buck, B, Calarco, JR, Carassiti, V, Cisbani, E, Ciullo, G, Contalbrigo, M, D'Ascenzo, N, De Leo, R, Diefenbach, J, Donnelly, TW, Dow, K, Elbakian, G, Eversheim, D, Frullani, S, Funke, C, Gavrilov, G, Gläser, B, Görrissen, N, Hauschildt, J, Henderson, BS, Hoffmeister, P, Holler, Y, Ice, LD, 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, Perez Benito, R, Perrino, R, Redwine, RP, Rodríguez Piñeiro, D, Rosner, G, Russell, RL, Schmidt, A, Seitz, B, Statera, M, Thiel, A, Vardanyan, H, Veretennikov, D, Vidal, C, Winnebeck, A & Yeganov, V 2014, 'The OLYMPUS experiment', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 741, pp. 1-17. https://doi.org/10.1016/j.nima.2013.12.035

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title = "The OLYMPUS experiment",

abstract = "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, μpGEp/GMp, 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 -75. Symmetric M{\o}ller/Bhabha calorimeters at 1.29 and telescopes of GEM and MWPC detectors at 12 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.",

keywords = "Elastic electron scattering, Elastic positron scattering, Form-factor ratio, Two-photon exchange",

author = "R. Milner and Hasell, {D. K.} and M. Kohl and U. Schneekloth and N. Akopov and Ricardo Alarcon and Andreev, {V. A.} and O. Ates and A. Avetisyan and D. Bayadilov and R. Beck and S. Belostotski and Bernauer, {J. C.} and J. Bessuille and F. Brinker and B. Buck and Calarco, {J. R.} and V. Carassiti and E. Cisbani and G. Ciullo and M. Contalbrigo and N. D'Ascenzo and {De Leo}, R. and J. Diefenbach and Donnelly, {T. W.} and K. Dow and G. Elbakian and D. Eversheim and S. Frullani and Ch Funke and G. Gavrilov and B. Gl{\"a}ser and N. G{\"o}rrissen and J. Hauschildt and Henderson, {B. S.} and Ph Hoffmeister and Y. Holler and Ice, {L. D.} and A. Izotov and R. Kaiser and G. Karyan and J. Kelsey and D. Khaneft and P. Klassen and A. Kiselev and A. Krivshich and I. Lehmann and P. Lenisa and D. Lenz and S. Lumsden and Y. Ma and F. Maas and H. Marukyan and O. Miklukho and A. Movsisyan and M. Murray and Y. Naryshkin and C. O'Connor and {Perez Benito}, R. and R. Perrino and Redwine, {R. P.} and {Rodr{\'i}guez Pi{\~n}eiro}, D. and G. Rosner and Russell, {R. L.} and A. Schmidt and B. Seitz and M. Statera and A. Thiel and H. Vardanyan and D. Veretennikov and C. Vidal and A. Winnebeck and V. Yeganov",

note = "Funding Information: This work was supported by numerous funding agencies which we gratefully acknowledge: the Ministry of Education and Science of Armenia, the Deutsche Forschungsgemeinschaft, the European Community-Research Infrastructure Activity , the United Kingdom Science and Technology Facilities Council and the Scottish Universities Physics Alliance, the United States Department of Energy and the National Science Foundation, and the Ministry of Education and Science of the Russian Federation. R. Milner also acknowledges the generous support of the Alexander von Humboldt Foundation, Germany.",

year = "2014",

month = mar,

day = "21",

doi = "10.1016/j.nima.2013.12.035",

language = "English (US)",

volume = "741",

pages = "1--17",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier",

}

TY - JOUR

T1 - The OLYMPUS experiment

AU - Milner, R.

AU - Hasell, D. K.

AU - Kohl, M.

AU - Schneekloth, U.

AU - Akopov, N.

AU - Alarcon, Ricardo

AU - Andreev, V. A.

AU - Ates, O.

AU - Avetisyan, A.

AU - Bayadilov, D.

AU - Beck, R.

AU - Belostotski, S.

AU - Bernauer, J. C.

AU - Bessuille, J.

AU - Brinker, F.

AU - Buck, B.

AU - Calarco, J. R.

AU - Carassiti, V.

AU - Cisbani, E.

AU - Ciullo, G.

AU - Contalbrigo, M.

AU - D'Ascenzo, N.

AU - De Leo, R.

AU - Diefenbach, J.

AU - Donnelly, T. W.

AU - Dow, K.

AU - Elbakian, G.

AU - Eversheim, D.

AU - Frullani, S.

AU - Funke, Ch

AU - Gavrilov, G.

AU - Gläser, B.

AU - Görrissen, N.

AU - Hauschildt, J.

AU - Henderson, B. S.

AU - Hoffmeister, Ph

AU - Holler, Y.

AU - Ice, L. D.

AU - Izotov, A.

AU - Kaiser, R.

AU - Karyan, G.

AU - Kelsey, J.

AU - Khaneft, D.

AU - Klassen, P.

AU - Kiselev, A.

AU - Krivshich, A.

AU - Lehmann, I.

AU - Lenisa, P.

AU - Lenz, D.

AU - Lumsden, S.

AU - Ma, Y.

AU - Maas, F.

AU - Marukyan, H.

AU - Miklukho, O.

AU - Movsisyan, A.

AU - Murray, M.

AU - Naryshkin, Y.

AU - O'Connor, C.

AU - Perez Benito, R.

AU - Perrino, R.

AU - Redwine, R. P.

AU - Rodríguez Piñeiro, D.

AU - Rosner, G.

AU - Russell, R. L.

AU - Schmidt, A.

AU - Seitz, B.

AU - Statera, M.

AU - Thiel, A.

AU - Vardanyan, H.

AU - Veretennikov, D.

AU - Vidal, C.

AU - Winnebeck, A.

AU - Yeganov, V.

N1 - Funding Information: This work was supported by numerous funding agencies which we gratefully acknowledge: the Ministry of Education and Science of Armenia, the Deutsche Forschungsgemeinschaft, the European Community-Research Infrastructure Activity , the United Kingdom Science and Technology Facilities Council and the Scottish Universities Physics Alliance, the United States Department of Energy and the National Science Foundation, and the Ministry of Education and Science of the Russian Federation. R. Milner also acknowledges the generous support of the Alexander von Humboldt Foundation, Germany.

PY - 2014/3/21

Y1 - 2014/3/21

N2 - 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, μpGEp/GMp, 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 -75. Symmetric Møller/Bhabha calorimeters at 1.29 and telescopes of GEM and MWPC detectors at 12 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.

AB - 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, μpGEp/GMp, 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 -75. Symmetric Møller/Bhabha calorimeters at 1.29 and telescopes of GEM and MWPC detectors at 12 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.

KW - Elastic electron scattering

KW - Elastic positron scattering

KW - Form-factor ratio

KW - Two-photon exchange

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U2 - 10.1016/j.nima.2013.12.035

DO - 10.1016/j.nima.2013.12.035

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JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

The OLYMPUS experiment

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