Unexpected reduction of rf spin resonance strength for stored deuteron beams

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

doi:10.1103/PhysRevSTAB.10.071001

Unexpected reduction of rf spin resonance strength for stored deuteron beams

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

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Stored beams of polarized protons, electrons, or deuterons can be spin flipped by sweeping an rf dipole's or solenoid's frequency through an rf spin resonance. Fitting such data to the modified Froissart-Stora equation's spin resonance strength EFS gave very large deviations from the EBdl* obtained from each rf magnet's Brmsdl. We recently varied an rf dipole's frequency sweep range Δf, and the momentum spread Δp/p and betatron tune νy of stored 1.85GeV/c polarized deuterons. We found a sharp constructive interference when νy was near an intrinsic spin resonance. Moreover, over large Δf and Δp/p ranges, EFS was about 7 times smaller than the predicted EBdl*.

Original language	English
Article number	071001
Journal	Physical Review Special Topics - Accelerators and Beams
Volume	10
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevSTAB.10.071001
State	Published - Jul 3 2007
Externally published	Yes

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Krisch, A. D., Leonova, M. A., Morozov, V. S., Raymond, R. S., Sivers, D. W., Wong, V. K., Gebel, R., Lehrach, A., Lorentz, B., Maier, R., Prasuhn, D., Schnase, A., Stockhorst, H., Hinterberger, F., & Ulbrich, K. (2007). Unexpected reduction of rf spin resonance strength for stored deuteron beams. Physical Review Special Topics - Accelerators and Beams, 10(7), Article 071001. https://doi.org/10.1103/PhysRevSTAB.10.071001

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title = "Unexpected reduction of rf spin resonance strength for stored deuteron beams",

abstract = "Stored beams of polarized protons, electrons, or deuterons can be spin flipped by sweeping an rf dipole's or solenoid's frequency through an rf spin resonance. Fitting such data to the modified Froissart-Stora equation's spin resonance strength EFS gave very large deviations from the EBdl* obtained from each rf magnet's Brmsdl. We recently varied an rf dipole's frequency sweep range Δf, and the momentum spread Δp/p and betatron tune νy of stored 1.85GeV/c polarized deuterons. We found a sharp constructive interference when νy was near an intrinsic spin resonance. Moreover, over large Δf and Δp/p ranges, EFS was about 7 times smaller than the predicted EBdl*.",

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

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doi = "10.1103/PhysRevSTAB.10.071001",

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Krisch, AD, Leonova, MA, Morozov, VS, Raymond, RS, Sivers, DW, Wong, VK, Gebel, R, Lehrach, A, Lorentz, B, Maier, R, Prasuhn, D, Schnase, A, Stockhorst, H, Hinterberger, F & Ulbrich, K 2007, 'Unexpected reduction of rf spin resonance strength for stored deuteron beams', Physical Review Special Topics - Accelerators and Beams, vol. 10, no. 7, 071001. https://doi.org/10.1103/PhysRevSTAB.10.071001

TY - JOUR

T1 - Unexpected reduction of rf spin resonance strength for stored deuteron beams

AU - Krisch, A. D.

AU - Leonova, M. A.

AU - Morozov, V. S.

AU - Raymond, R. S.

AU - Sivers, D. W.

AU - Wong, V. K.

AU - Gebel, R.

AU - Lehrach, A.

AU - Lorentz, B.

AU - Maier, R.

AU - Prasuhn, D.

AU - Schnase, A.

AU - Stockhorst, H.

AU - Hinterberger, F.

AU - Ulbrich, K.

PY - 2007/7/3

Y1 - 2007/7/3

N2 - Stored beams of polarized protons, electrons, or deuterons can be spin flipped by sweeping an rf dipole's or solenoid's frequency through an rf spin resonance. Fitting such data to the modified Froissart-Stora equation's spin resonance strength EFS gave very large deviations from the EBdl* obtained from each rf magnet's Brmsdl. We recently varied an rf dipole's frequency sweep range Δf, and the momentum spread Δp/p and betatron tune νy of stored 1.85GeV/c polarized deuterons. We found a sharp constructive interference when νy was near an intrinsic spin resonance. Moreover, over large Δf and Δp/p ranges, EFS was about 7 times smaller than the predicted EBdl*.

AB - Stored beams of polarized protons, electrons, or deuterons can be spin flipped by sweeping an rf dipole's or solenoid's frequency through an rf spin resonance. Fitting such data to the modified Froissart-Stora equation's spin resonance strength EFS gave very large deviations from the EBdl* obtained from each rf magnet's Brmsdl. We recently varied an rf dipole's frequency sweep range Δf, and the momentum spread Δp/p and betatron tune νy of stored 1.85GeV/c polarized deuterons. We found a sharp constructive interference when νy was near an intrinsic spin resonance. Moreover, over large Δf and Δp/p ranges, EFS was about 7 times smaller than the predicted EBdl*.

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U2 - 10.1103/PhysRevSTAB.10.071001

DO - 10.1103/PhysRevSTAB.10.071001

M3 - Article

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VL - 10

JO - Physical Review Special Topics - Accelerators and Beams

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IS - 7

M1 - 071001

ER -

Unexpected reduction of rf spin resonance strength for stored deuteron beams

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