Experimental test of new technique to overcome spin depolarizing resonances

R. S. Raymond; A. W. Chao; A. D. Krisch; M. A. Leonova; V. S. Morozov; D. W. Sivers; V. K. Wong; A. Ganshvili; R. Gebel; A. Lehrach; B. Lorentz; R. Maier; D. Prasuhn; H. Stockhorst; D. Welsch; F. Hinterberger; A. M. Kondratenko

doi:10.1063/1.3215766

Experimental test of new technique to overcome spin depolarizing resonances

R. S. Raymond, A. W. Chao, A. D. Krisch, M. A. Leonova, V. S. Morozov, D. W. Sivers, V. K. Wong, A. Ganshvili, R. Gebel, A. Lehrach, B. Lorentz, R. Maier, D. Prasuhn, H. Stockhorst, D. Welsch, F. Hinterberger, A. M. Kondratenko

Accelerator Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We recently tested a new spin resonance crossing technique, Kondratenko Crossing (KC) by sweeping an rf solenoid's frequency through an rf-induced spin resonance with both the KC an traditional Fast Crossing (FC) patterns. Using both rf bunched and unbunched 1.85 GeV/c polarized deuterons stored in COSY, we varied the parameters of both crossing patterns. Compared to FC with the same crossing speed, KC reduced the depolarization by measured factors of 4.7 ± 0.3 and 19 ±₅ ¹² for unbunched and bunched beams, respectively. This clearly showed the large potential benefit of Kondratenko Crossing over Fast Crossing.

Original language	English
Title of host publication	Spin Physics
Subtitle of host publication	18th International Spin Physics Symposium
Editors	Xiaochao Zheng, Yelena Prok, Matt Poelker, Donald G. Crabb, Simonetta Liuti, Donal B. Day
Publisher	American Institute of Physics Inc.
Pages	805-808
Number of pages	4
ISBN (Print)	9780735406865
DOIs	https://doi.org/10.1063/1.3215766
State	Published - Aug 4 2009
Event	18th International Spin Physics Symposium 2008 - Charlottesville, United States Duration: Oct 6 2008 → Oct 11 2008

Publication series

Name	AIP Conference Proceedings
Volume	1149
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	18th International Spin Physics Symposium 2008
Country/Territory	United States
City	Charlottesville
Period	10/6/08 → 10/11/08

Funding

We thank the COSY staff for the successful operation of COSY, and E.D. Courant, Ya.S. Derbenev, Yu.F. Orlov, T. Roser, E.J. Stephenson and K. Ulbrich for their help and advice. This research was supported by grants from the German BMBF Science Ministry, its JCHP-FFE program at COSY and the Helmholtz Association through funds provided to the virtual institute "Spin and strong QCD" (VH-VI-231).

Keywords

Kondratenko Crossing
Preserving polarization
Spin depolarizing resonance

Access to Document

10.1063/1.3215766

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Raymond, R. S., Chao, A. W., Krisch, A. D., Leonova, M. A., Morozov, V. S., Sivers, D. W., Wong, V. K., Ganshvili, A., Gebel, R., Lehrach, A., Lorentz, B., Maier, R., Prasuhn, D., Stockhorst, H., Welsch, D., Hinterberger, F., & Kondratenko, A. M. (2009). Experimental test of new technique to overcome spin depolarizing resonances. In X. Zheng, Y. Prok, M. Poelker, D. G. Crabb, S. Liuti, & D. B. Day (Eds.), Spin Physics: 18th International Spin Physics Symposium (pp. 805-808). (AIP Conference Proceedings; Vol. 1149). American Institute of Physics Inc.. https://doi.org/10.1063/1.3215766

Raymond, R. S. ; Chao, A. W. ; Krisch, A. D. et al. / Experimental test of new technique to overcome spin depolarizing resonances. Spin Physics: 18th International Spin Physics Symposium. editor / Xiaochao Zheng ; Yelena Prok ; Matt Poelker ; Donald G. Crabb ; Simonetta Liuti ; Donal B. Day. American Institute of Physics Inc., 2009. pp. 805-808 (AIP Conference Proceedings).

@inproceedings{11da9d2a5a994147bda4138f37f3ff65,

title = "Experimental test of new technique to overcome spin depolarizing resonances",

abstract = "We recently tested a new spin resonance crossing technique, Kondratenko Crossing (KC) by sweeping an rf solenoid's frequency through an rf-induced spin resonance with both the KC an traditional Fast Crossing (FC) patterns. Using both rf bunched and unbunched 1.85 GeV/c polarized deuterons stored in COSY, we varied the parameters of both crossing patterns. Compared to FC with the same crossing speed, KC reduced the depolarization by measured factors of 4.7 ± 0.3 and 19 ±5 12 for unbunched and bunched beams, respectively. This clearly showed the large potential benefit of Kondratenko Crossing over Fast Crossing.",

keywords = "Kondratenko Crossing, Preserving polarization, Spin depolarizing resonance",

author = "Raymond, {R. S.} and Chao, {A. W.} and Krisch, {A. D.} and Leonova, {M. A.} and Morozov, {V. S.} and Sivers, {D. W.} and Wong, {V. K.} and A. Ganshvili and R. Gebel and A. Lehrach and B. Lorentz and R. Maier and D. Prasuhn and H. Stockhorst and D. Welsch and F. Hinterberger and Kondratenko, {A. M.}",

note = "Publisher Copyright: {\textcopyright} 2009 American Institute of Physics.; 18th International Spin Physics Symposium 2008 ; Conference date: 06-10-2008 Through 11-10-2008",

year = "2009",

month = aug,

day = "4",

doi = "10.1063/1.3215766",

language = "English",

isbn = "9780735406865",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

pages = "805--808",

editor = "Xiaochao Zheng and Yelena Prok and Matt Poelker and Crabb, {Donald G.} and Simonetta Liuti and Day, {Donal B.}",

booktitle = "Spin Physics",

}

Raymond, RS, Chao, AW, Krisch, AD, Leonova, MA, Morozov, VS, Sivers, DW, Wong, VK, Ganshvili, A, Gebel, R, Lehrach, A, Lorentz, B, Maier, R, Prasuhn, D, Stockhorst, H, Welsch, D, Hinterberger, F & Kondratenko, AM 2009, Experimental test of new technique to overcome spin depolarizing resonances. in X Zheng, Y Prok, M Poelker, DG Crabb, S Liuti & DB Day (eds), Spin Physics: 18th International Spin Physics Symposium. AIP Conference Proceedings, vol. 1149, American Institute of Physics Inc., pp. 805-808, 18th International Spin Physics Symposium 2008, Charlottesville, United States, 10/6/08. https://doi.org/10.1063/1.3215766

Experimental test of new technique to overcome spin depolarizing resonances. / Raymond, R. S.; Chao, A. W.; Krisch, A. D. et al.
Spin Physics: 18th International Spin Physics Symposium. ed. / Xiaochao Zheng; Yelena Prok; Matt Poelker; Donald G. Crabb; Simonetta Liuti; Donal B. Day. American Institute of Physics Inc., 2009. p. 805-808 (AIP Conference Proceedings; Vol. 1149).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Experimental test of new technique to overcome spin depolarizing resonances

AU - Raymond, R. S.

AU - Chao, A. W.

AU - Krisch, A. D.

AU - Leonova, M. A.

AU - Morozov, V. S.

AU - Sivers, D. W.

AU - Wong, V. K.

AU - Ganshvili, A.

AU - Gebel, R.

AU - Lehrach, A.

AU - Lorentz, B.

AU - Maier, R.

AU - Prasuhn, D.

AU - Stockhorst, H.

AU - Welsch, D.

AU - Hinterberger, F.

AU - Kondratenko, A. M.

PY - 2009/8/4

Y1 - 2009/8/4

N2 - We recently tested a new spin resonance crossing technique, Kondratenko Crossing (KC) by sweeping an rf solenoid's frequency through an rf-induced spin resonance with both the KC an traditional Fast Crossing (FC) patterns. Using both rf bunched and unbunched 1.85 GeV/c polarized deuterons stored in COSY, we varied the parameters of both crossing patterns. Compared to FC with the same crossing speed, KC reduced the depolarization by measured factors of 4.7 ± 0.3 and 19 ±5 12 for unbunched and bunched beams, respectively. This clearly showed the large potential benefit of Kondratenko Crossing over Fast Crossing.

AB - We recently tested a new spin resonance crossing technique, Kondratenko Crossing (KC) by sweeping an rf solenoid's frequency through an rf-induced spin resonance with both the KC an traditional Fast Crossing (FC) patterns. Using both rf bunched and unbunched 1.85 GeV/c polarized deuterons stored in COSY, we varied the parameters of both crossing patterns. Compared to FC with the same crossing speed, KC reduced the depolarization by measured factors of 4.7 ± 0.3 and 19 ±5 12 for unbunched and bunched beams, respectively. This clearly showed the large potential benefit of Kondratenko Crossing over Fast Crossing.

KW - Kondratenko Crossing

KW - Preserving polarization

KW - Spin depolarizing resonance

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U2 - 10.1063/1.3215766

DO - 10.1063/1.3215766

M3 - Conference contribution

AN - SCOPUS:85054387765

SN - 9780735406865

T3 - AIP Conference Proceedings

SP - 805

EP - 808

BT - Spin Physics

A2 - Zheng, Xiaochao

A2 - Prok, Yelena

A2 - Poelker, Matt

A2 - Crabb, Donald G.

A2 - Liuti, Simonetta

A2 - Day, Donal B.

PB - American Institute of Physics Inc.

T2 - 18th International Spin Physics Symposium 2008

Y2 - 6 October 2008 through 11 October 2008

ER -

Raymond RS, Chao AW, Krisch AD, Leonova MA, Morozov VS, Sivers DW et al. Experimental test of new technique to overcome spin depolarizing resonances. In Zheng X, Prok Y, Poelker M, Crabb DG, Liuti S, Day DB, editors, Spin Physics: 18th International Spin Physics Symposium. American Institute of Physics Inc. 2009. p. 805-808. (AIP Conference Proceedings). doi: 10.1063/1.3215766

Experimental test of new technique to overcome spin depolarizing resonances

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