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Published February 8, 1999 | Published
Journal Article Open

Beam-induced nuclear depolarization in a gaseous polarized-hydrogen target

Ackerstaff, K.
Airapetian, A.
Akopov, N.
Amarian, M.
Aschenauer, E. C.
Avakian, H.
Avakian, R.
Avetissian, A.
Bains, B.
Baumgarten, C.
Beckmann, M.
Belostotski, St.
Belz, J. E.
Benisch, Th.
Bernreuther, S.
Bianchi, N.
Blouw, J.
Böttcher, H.
Borissov, A.
Brack, J.
Brauksiepe, S.
Braun, B.
Bray, B.
Brons, St.
Brückner, W.
Brüll, A.
Bruins, E. E. W.
Bulten, H. J.
Cadman, R. V.
Capitani, G. P.
Carter, P.
Chumney, P.
Cisbani, E. ORCID icon
Court, G. R.
Dalpiaz, P. F.
De Sanctis, E.
De Schepper, D.
Devitsin, E.
de Witt Huberts, P. K. A.
Di Nezza, P.
Düren, M.
Dvoredsky, A.
Elbakian, G.
Fantoni, A.
Fechtchenko, A.
Ferstl, M.
Fick, D.
Fiedler, K.
Filippone, B. W. ORCID icon
Fischer, H.
Fox, B.
Franz, J.
Frabetti, S.
Frullani, S.
Funk, M.-A.
Gagunashvili, N. D.
Gao, H.
Gärber, Y.
Garibaldi, F.
Gavrilov, G.
Geiger, P.
Gharibyan, V.
Giordjian, V.
Golendukhin, A.
Graw, G.
Grebeniouk, O.
Green, P. W.
Greeniaus, L. G.
Grosshauser, C.
Gute, A.
Haeberli, W.
Hansen, J.-O.
Hasch, D.
Häusser, O.
Henderson, R.
Henkes, Th.
Henoch, M.
Hertenberger, R.
Holler, Y.
Holt, R. J.
Hoprich, W.
Ihssen, H.
Iodice, M.
Izotov, A.
Jackson, H. E.
Jgoun, A.
Kaiser, R.
Kinney, E.
Kisselev, A.
Kitching, P.
Kobayashi, H.
Koch, N.
Königsmann, K.
Kolstein, M.
Kolster, H.
Korotkov, V.
Korsch, W.
Kozlov, V.
Kramer, L. H.
Krivokhijine, V. G.
Kyle, G.
Lachnit, W.
Lorenzon, W.
Makins, N. C. R.
Manaenkov, S. I.
Martens, F. K.
Martin, J. W.
Masoli, F.
Mateos, A.
McAndrew, M.
McIlhany, K.
McKeown, R. D.
Meissner, F.
Metz, A.
Meyners, N.
Mikloukho, O.
Miller, C. A.
Miller, M. A. ORCID icon
Milner, R.
Mitsyn, V.
Most, A.
Mozzetti, R.
Muccifora, V.
Nagaitsev, A.
Naryshkin, Y.
Nathan, A. M.
Neunreither, F.
Niczyporuk, M.
Nowak, W.-D.
Nupieri, M.
Ogami, H.
O'Neill, T. G.
Owen, B. R.
Papavassiliou, V.
Pate, S. F.
Pitt, M.
Potashov, S.
Potterveld, D. H.
Rakness, G.
Reali, A.
Redwine, R.
Reolon, A. R.
Ristinen, R.
Rith, K.
Roloff, H.
Rossi, P.
Rudnitsky, S.
Ruh, M.
Ryckbosch, D.
Sakemi, Y.
Savin, I.
Schmidt, F.
Schmitt, H.
Schnell, G.
Schüler, K. P.
Schwind, A.
Shibata, T.-A.
Shin, T.
Shutov, V.
Simani, C.
Simon, A.
Sinram, K.
Slavich, P.
Sowinski, J.
Spengos, M.
Steffens, E.
Stenger, J.
Stewart, J.
Stock, F.
Stoesslein, U.
Sutter, M.
Tallini, H.
Taroian, S.
Terkulov, A.
Tipton, B.
Tytgat, M.
Urciuoli, G. M.
van Hunen, J. J.
van de Vyver, R.
van den Brand, J. F. J.
van der Steenhoven, G.
Vetterli, M. C.
Vincter, M.
Volk, E.
Wander, W.
Williamson, S. E.
Wise, T. ORCID icon
Woller, K.
Yoneyama, S.
Zapfe-Düren, K.
Zohrabian, H.
HERMES Collaboration


Spin-polarized atomic hydrogen is used as a gaseous polarized-proton target in high-energy and nuclear-physics experiments operating with internal beams in storage rings. When such beams are intense and bunched, this type of target can be depolarized by a resonant interaction with the transient magnetic field generated by the beam bunches. This effect has been studied with the HERA positron beam in the HERMES experiment at DESY. Resonances have been observed and a simple analytic model has been used to explain their shape and position. Operating conditions for the experiment have been found where there is no significant target depolarization due to this effect.

Additional Information

© 1999 American Physical Society. Received 4 June 1998. We gratefully acknowledge the DESY management for its support, the DESY staff and the staffs of the collaborating institutions for their significant effort, and our funding agencies for financial support.

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