CYCLOTRONS 2010 - List of Authors (Mao, R.S.)

Paper

Title

Page

HIRFL-CSR Facility Status and Development

37

Y.J. Yuan, X.H. Cai, D.Q. Gao, Y. He, L.Z. Ma, X. Ma, R.S. Mao, Y.W. Su, X.L. Tu, J.W. Xia, H.S. Xu, Z. Xu, J.C. Yang, X.D. Yang, X.T. Yang, Y.P. Yang, W. Zhang, H.W. Zhao
IMP, Lanzhou, People's Republic of China

The HIRFL-CSR facility come into operation by the end of 2007. During operation in recent years, CSR supplied beam for experiments at several terminals and inside both CSRm and CSRe rings. The experiments covers high resolution mass measurement, cancer therapy research, neutron wall, atomic physics using electron target and internal gas target, using injection beam mainly from the SFC of cyclotron injector. New methods and further developments are required to improve the performance of CSR system including multi-gradients measurement method for beam spot commissioning and beam transfer, nonlinear effect correction and stabilization of isochronous mode of CSRe. For suppling of heverier ion beam with proper ernergy, the cyclotron complex should be enhanced and new injector is proposed to replace SFC as injector of SSC.

Slides MOA2CIO01 [3.766 MB]

MOPCP106

Beam-Phase Measurement System for HIRFL

263

J.H. Zheng, W. Liu, W. Ma, R.S. Mao, Y. Wang, J.X. Wu, Y. Yin
IMP, Lanzhou, People's Republic of China

The beam phase measurement system in HIRFL is introduced. The system had been improved using RF-signal mixing and filtering techniques and noise cancellation method. Therefore,the influence of strongly RF field disturbing signal was eliminated and the signal to noise rate was increased, and a stable and sensitive phase measurement system was developed. The phase history of the ion beam was detected by using 15 set of capacitive pick-up probes installed in the SSC cyclotron. The phase information of the measurement was necessary for tuning purposes to obtain an optimized isochronous magnetic field, where the beam intensity was increased and the beam quality was optimized . The measuremnet results before and after isochronous magnetic field for ion and ion in SSC was given . The phase measurement system was reliable by optimizing isochronous magnetic field test,and the precision reached ±0.5°,the sensitivity of the beam signal measurement was about 10nA as well.

Paper	Title	Page
MOA2CIO01	HIRFL-CSR Facility Status and Development	37
	Y.J. Yuan, X.H. Cai, D.Q. Gao, Y. He, L.Z. Ma, X. Ma, R.S. Mao, Y.W. Su, X.L. Tu, J.W. Xia, H.S. Xu, Z. Xu, J.C. Yang, X.D. Yang, X.T. Yang, Y.P. Yang, W. Zhang, H.W. Zhao IMP, Lanzhou, People's Republic of China
	The HIRFL-CSR facility come into operation by the end of 2007. During operation in recent years, CSR supplied beam for experiments at several terminals and inside both CSRm and CSRe rings. The experiments covers high resolution mass measurement, cancer therapy research, neutron wall, atomic physics using electron target and internal gas target, using injection beam mainly from the SFC of cyclotron injector. New methods and further developments are required to improve the performance of CSR system including multi-gradients measurement method for beam spot commissioning and beam transfer, nonlinear effect correction and stabilization of isochronous mode of CSRe. For suppling of heverier ion beam with proper ernergy, the cyclotron complex should be enhanced and new injector is proposed to replace SFC as injector of SSC.
	Slides MOA2CIO01 [3.766 MB]

MOPCP106	Beam-Phase Measurement System for HIRFL	263
	J.H. Zheng, W. Liu, W. Ma, R.S. Mao, Y. Wang, J.X. Wu, Y. Yin IMP, Lanzhou, People's Republic of China
	The beam phase measurement system in HIRFL is introduced. The system had been improved using RF-signal mixing and filtering techniques and noise cancellation method. Therefore,the influence of strongly RF field disturbing signal was eliminated and the signal to noise rate was increased, and a stable and sensitive phase measurement system was developed. The phase history of the ion beam was detected by using 15 set of capacitive pick-up probes installed in the SSC cyclotron. The phase information of the measurement was necessary for tuning purposes to obtain an optimized isochronous magnetic field, where the beam intensity was increased and the beam quality was optimized . The measuremnet results before and after isochronous magnetic field for ion and ion in SSC was given . The phase measurement system was reliable by optimizing isochronous magnetic field test,and the precision reached ±0.5°,the sensitivity of the beam signal measurement was about 10nA as well.