Stochastic Momentum Cooling——Palmer Cooling at HIRFL-CSRm

WU Jun-Xia; XIA Jia-Wen; YANG Jian-Cheng; LIU Wei; YIN Xue-Jun; LIU Yong

Chinese Physics C> 2004, Vol. 28> Issue(4) : 437-440

Stochastic Momentum Cooling——Palmer Cooling at HIRFL-CSRm

Institute of Modern Physics,The Chinese Academy Sciences,Lanzhou 730000,China2 The Graduate School of the Chinese Academy Sciences,Beijing 100039,China

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Abstract：
The Palmer cooling is always used for large dispersion momentum cooling in storage ring. So it will be used during the stripping injection of HIRFL-CSRm. Here the Palmer cooling is described. The optimum cooling time, optimum gain and optimum cooling bandwidth are obtained in the simulation with Palmer method. Using the Fokker-Planck equation, the particle distribution with respect to the momentum dispersion is also obtained numerically during the stochastic cooling process. This is useful for analysis of experimental data and for design of the cooling system, i.e, optimization of the system passband and gain, specification of accuracy of the signal transmission, etc.

References

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. XIA J W, ZHAN W L, WEI B W et al. Nucl. Instrum. Methods,2002, A488: 112. Mohl D. CERN Report , 1995, 95..06: 5873. Marriner John. Theory, Technology and Technique of Stochast icCooling. FERMILAB-Conf-93/3084. Mohl D. Nucl. Inst rum. Methods, 1997, A391: 1645. Goldberg D A, Lambertson G R. COPING WITH POWER-LIMITEDTRANSVERSE STOCHASTIC COOLING SYSTEMS. Prepared for IEEE Part icle Accelerator Conference, Chicago, IL, 20-23 Mar. 1989. InChicago 1989, Accelerator Science and Technology, 1: 642-6446. Brain T Park, Petrosian V. Fokker..Planck Equations of StochasticAcceleration: A Study of Numerical Methods. ApJS, 1996, 103: 255

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WU Jun-Xia, XIA Jia-Wen, YANG Jian-Cheng, LIU Wei, YIN Xue-Jun and LIU Yong. Stochastic Momentum Cooling——Palmer Cooling at HIRFL-CSRm[J]. Chinese Physics C, 2004, 28(4): 437-440.

WU Jun-Xia, XIA Jia-Wen, YANG Jian-Cheng, LIU Wei, YIN Xue-Jun and LIU Yong. Stochastic Momentum Cooling——Palmer Cooling at HIRFL-CSRm[J]. Chinese Physics C, 2004, 28(4): 437-440. shu

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Received: 2003-08-12
Revised: 1900-01-01

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