Polarization reversal of stored proton beams in the Indiana Cooler

A spin flipper of reliable and robust long‐term operation was developed and has been used successfully at the Indiana University Cooler Storage Ring. To reverse the polarization of the stored beam, the frequency of a rf solenoid is swept adiabatically across a depolarizing resonance frequency. Depol...

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Published in:Review of scientific instruments 1996-01, Vol.67 (1), p.165-169
Main Authors: von Przewoski, B., Dezarn, W. A., Doskow, J., Hardie, J. G., Meyer, H. O., Pollock, R. E., Rinckel, T., Sperisen, F., Haeberli, W., Lorentz, B., Rathmann, F., Wise, T., Pancella, P. V.
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container_end_page 169
container_issue 1
container_start_page 165
container_title Review of scientific instruments
container_volume 67
creator von Przewoski, B.
Dezarn, W. A.
Doskow, J.
Hardie, J. G.
Meyer, H. O.
Pollock, R. E.
Rinckel, T.
Sperisen, F.
Haeberli, W.
Lorentz, B.
Rathmann, F.
Wise, T.
Pancella, P. V.
description A spin flipper of reliable and robust long‐term operation was developed and has been used successfully at the Indiana University Cooler Storage Ring. To reverse the polarization of the stored beam, the frequency of a rf solenoid is swept adiabatically across a depolarizing resonance frequency. Depolarizing sidebands to the resonance are eliminated by shorting out the ring’s bunching rf cavity prior to the frequency sweep. With the spin flipper it is no longer necessary to dump the stored beam and to refill the ring with protons of opposite spin state. Rather, beam accumulation continues without reversing the spin at injection, and instead the polarization of the stored beam is flipped periodically. Thus the luminosity is significantly increased when the flipper is used.
doi_str_mv 10.1063/1.1146565
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source AIP_美国物理联合会现刊（与NSTL共建）; AIP Digital Archive
title Polarization reversal of stored proton beams in the Indiana Cooler
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