Spin manipulation of 1.94 GeV/c polarized protons stored in the COSY cooler synchrotron

V. S. Morozov; A. D. Krisch; M. A. Leonova; R. S. Raymond; V. K. Wong; K. Yonehara; U. Bechstedt; R. Gebel; A. Lehrach; B. Lorentz; R. Maier; D. Prasuhn; A. Schnase; H. Stockhorst; D. Eversheim; F. Hinterberger; H. Rohdjeß; K. Ulbrich

doi:10.1103/PhysRevSTAB.7.024002

Spin manipulation of 1.94 GeV/c polarized protons stored in the COSY cooler synchrotron

V. S. Morozov, A. D. Krisch, M. A. Leonova, R. S. Raymond, V. K. Wong, K. Yonehara, U. Bechstedt, R. Gebel, A. Lehrach, B. Lorentz, R. Maier, D. Prasuhn, A. Schnase, H. Stockhorst, D. Eversheim, F. Hinterberger, H. Rohdjeß, K. Ulbrich

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

18 Scopus citations

Abstract

We recently studied spin flipping of a 1.94 GeV/c vertically polarized proton beam at COSY in Jülich, Germany. We swept an rf-dipole's frequency through an rf-induced spin resonance to flip the beam's polarization direction. After determining the resonance's frequency, we varied the dipole's strength, frequency range, and frequency ramp time. At the rf-dipole's maximum strength, and optimum frequency range and ramp time, we measured a spin-flip efficiency of 99.3% ± 0.1%. This result indicates that an rf dipole may allow efficient spin flipping in high energy proton rings.

Original language	English
Article number	024002
Pages (from-to)	34-38
Number of pages	5
Journal	Physical Review Special Topics - Accelerators and Beams
Volume	7
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevSTAB.7.024002
State	Published - 2004
Externally published	Yes

Funding

We would like to thank the entire COSY staff for the successful operation of COSY with its injector cyclotron and polarized ion source. We are grateful to B. B. Blinov, A. W. Chao, E. D. Courant, Ya. S. Derbenev, G. Fidecaro, H. Huang, A. M. T. Lin, W. Lorenzon, C. C. Peters, ?>R. A. Phelps, T. Roser, H. Sato, W. Scobel, D. W. Sivers, and others for their help and advice in the earlier stages of this experiment. This research was supported by grants from the U.S. Department of Energy and the German BMBF Ministry.

Funders	Funder number
BMBF Ministry
U.S. Department of Energy

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10.1103/PhysRevSTAB.7.024002

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Morozov, V. S., Krisch, A. D., Leonova, M. A., Raymond, R. S., Wong, V. K., Yonehara, K., Bechstedt, U., Gebel, R., Lehrach, A., Lorentz, B., Maier, R., Prasuhn, D., Schnase, A., Stockhorst, H., Eversheim, D., Hinterberger, F., Rohdjeß, H., & Ulbrich, K. (2004). Spin manipulation of 1.94 GeV/c polarized protons stored in the COSY cooler synchrotron. Physical Review Special Topics - Accelerators and Beams, 7(2), 34-38. Article 024002. https://doi.org/10.1103/PhysRevSTAB.7.024002

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title = "Spin manipulation of 1.94 GeV/c polarized protons stored in the COSY cooler synchrotron",

abstract = "We recently studied spin flipping of a 1.94 GeV/c vertically polarized proton beam at COSY in J{\"u}lich, Germany. We swept an rf-dipole's frequency through an rf-induced spin resonance to flip the beam's polarization direction. After determining the resonance's frequency, we varied the dipole's strength, frequency range, and frequency ramp time. At the rf-dipole's maximum strength, and optimum frequency range and ramp time, we measured a spin-flip efficiency of 99.3% ± 0.1%. This result indicates that an rf dipole may allow efficient spin flipping in high energy proton rings.",

author = "Morozov, {V. S.} and Krisch, {A. D.} and Leonova, {M. A.} and Raymond, {R. S.} and Wong, {V. K.} and K. Yonehara and U. Bechstedt and R. Gebel and A. Lehrach and B. Lorentz and R. Maier and D. Prasuhn and A. Schnase and H. Stockhorst and D. Eversheim and F. Hinterberger and H. Rohdje{\ss} and K. Ulbrich",

year = "2004",

doi = "10.1103/PhysRevSTAB.7.024002",

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journal = "Physical Review Special Topics - Accelerators and Beams",

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Morozov, VS, Krisch, AD, Leonova, MA, Raymond, RS, Wong, VK, Yonehara, K, Bechstedt, U, Gebel, R, Lehrach, A, Lorentz, B, Maier, R, Prasuhn, D, Schnase, A, Stockhorst, H, Eversheim, D, Hinterberger, F, Rohdjeß, H & Ulbrich, K 2004, 'Spin manipulation of 1.94 GeV/c polarized protons stored in the COSY cooler synchrotron', Physical Review Special Topics - Accelerators and Beams, vol. 7, no. 2, 024002, pp. 34-38. https://doi.org/10.1103/PhysRevSTAB.7.024002

TY - JOUR

T1 - Spin manipulation of 1.94 GeV/c polarized protons stored in the COSY cooler synchrotron

AU - Morozov, V. S.

AU - Krisch, A. D.

AU - Leonova, M. A.

AU - Raymond, R. S.

AU - Wong, V. K.

AU - Yonehara, K.

AU - Bechstedt, U.

AU - Gebel, R.

AU - Lehrach, A.

AU - Lorentz, B.

AU - Maier, R.

AU - Prasuhn, D.

AU - Schnase, A.

AU - Stockhorst, H.

AU - Eversheim, D.

AU - Hinterberger, F.

AU - Rohdjeß, H.

AU - Ulbrich, K.

PY - 2004

Y1 - 2004

N2 - We recently studied spin flipping of a 1.94 GeV/c vertically polarized proton beam at COSY in Jülich, Germany. We swept an rf-dipole's frequency through an rf-induced spin resonance to flip the beam's polarization direction. After determining the resonance's frequency, we varied the dipole's strength, frequency range, and frequency ramp time. At the rf-dipole's maximum strength, and optimum frequency range and ramp time, we measured a spin-flip efficiency of 99.3% ± 0.1%. This result indicates that an rf dipole may allow efficient spin flipping in high energy proton rings.

AB - We recently studied spin flipping of a 1.94 GeV/c vertically polarized proton beam at COSY in Jülich, Germany. We swept an rf-dipole's frequency through an rf-induced spin resonance to flip the beam's polarization direction. After determining the resonance's frequency, we varied the dipole's strength, frequency range, and frequency ramp time. At the rf-dipole's maximum strength, and optimum frequency range and ramp time, we measured a spin-flip efficiency of 99.3% ± 0.1%. This result indicates that an rf dipole may allow efficient spin flipping in high energy proton rings.

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DO - 10.1103/PhysRevSTAB.7.024002

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JF - Physical Review Special Topics - Accelerators and Beams

IS - 2

M1 - 024002

ER -

Spin manipulation of 1.94 GeV/c polarized protons stored in the COSY cooler synchrotron

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