CYCLOTRONS 2010 - List of Authors (Yang, X.T.)

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]

MOPCP073

The Vacuum System of HIRFL Cyclotrons

195

X.T. Yang, J. Meng, J.H. Zhang
IMP, Lanzhou, People's Republic of China

HIRFL has 2 cyclotrons: a sector focus cyclotron (SFC) and a separate sector cyclotron (SSC). SFC was built in 1957. In the past 50 years, the vacuum system of SFC has been upgraded for three times. The vacuum chamber was redesigned to double-deck at the third upgrade. The working pressure in beam chamber was improved from 10^-6 mbar to 10^-8 mbar. SFC has delivered Pb, Bi and U beams in the past few years since the last upgrading of its vacuum chamber. SSC began to operate in 1987. The vacuum chamber of SSC has a volume of 100m³. 8 cryopumps keep the pressure from 4×10^-7 mbar to 8×10^-8 mbar depending on the used pump numbers (2~8). In the past 20 years, because of the contamination of oil vapour and leaks occurred in some components inside the SSC vacuum chamber, the vacuum condition has worsened than the beginning. It is a big problem to accelerate the heavier ions. The upgrade for the SSC vacuum system will be an urgent task for us. The rough pumping system of both SFC and SSC will be rebuilt recently. The oil pump units will be changed by large dry mechanical pumps. As a result, the oil vapour in two cyclotrons will be eliminated and the vacuum condition of them will be improved.

MOPCP100

Axial Injection Beam Line of a Compact Cyclotron

254

J.Q. Zhang, Y. Cao, L.Z. Ma, A. Shi, M.T. Song, L.P. Sun, X.T. Yang, Q.G. Yao, Z.M. You, X.Q. Zhang, X.Z. Zhang, H.W. Zhao, J.H. Zheng
IMP, Lanzhou, People's Republic of China

Axial injection beam line of the therapy cyclotron is presented. It is intended for transportation of the C⁵⁺ ion beam obtained in the permanent magnet ion source. The beam line is only 3.486 m from the ion source to the entrance of spiral inflector, it consists of two sets glasser lens, one set double 90° bend magnet, one quadrupole lens and two solenoid lens. A big vacuum chamber is installed in the vertical part of the beam line, the sinusoidal buncher, the Faraday cap, the slit collimator and chopper are located in the vacuum chamber. The sinusoidal buncher is used for increasing of the seizing efficiency. The Faraday cap is used for the beam diagnostics. The bend magnet with the slit collimator is used for choice of C⁵⁺ ion beam. The chopper is used for choice of the beam utilizing time.

TUA2CCO03

Design and Construction Progress of a 7 MeV/u Cyclotron

317

B. Wang, D.Q. Gao, H.F. Hao, L.Z. Ma, K.D. Man, M.T. Song, X.W. Wang, X.T. Yang, Q.G. Yao, Z.M. You, J.Q. Zhang, S.H. Zhang, X.Q. Zhang, H.W. Zhao
IMP, Lanzhou, People's Republic of China

The 7MeV/u cyclotron accelerates carbon ions with mass number 12, 5+ charges, the extraction energy of carbon ions is 7 MeV/u, and the beam current density is designed to be 10 eμA. It designed as injector for the HITFiL (Heavy Ions Therapy Facility in LanZhou) synchrotron, which accelerates carbon ions to the energy 300 MeV/u for tumors treatment. Computer modeling results on the axial injection, magnetic, accelerating and extraction systems of the cyclotron are given. Design of the main systems of the cyclotron and the results of beam dynamic simulations are introduced. The construction progress including the ECR ion source, the axial injection beam line, the magnet, the RF system, the vacuum system etc. will be described respectively.

Slides TUA2CCO03 [1.679 MB]

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]

MOPCP073	The Vacuum System of HIRFL Cyclotrons	195
	X.T. Yang, J. Meng, J.H. Zhang IMP, Lanzhou, People's Republic of China
	HIRFL has 2 cyclotrons: a sector focus cyclotron (SFC) and a separate sector cyclotron (SSC). SFC was built in 1957. In the past 50 years, the vacuum system of SFC has been upgraded for three times. The vacuum chamber was redesigned to double-deck at the third upgrade. The working pressure in beam chamber was improved from 10^-6 mbar to 10^-8 mbar. SFC has delivered Pb, Bi and U beams in the past few years since the last upgrading of its vacuum chamber. SSC began to operate in 1987. The vacuum chamber of SSC has a volume of 100m³. 8 cryopumps keep the pressure from 4×10^-7 mbar to 8×10^-8 mbar depending on the used pump numbers (2~8). In the past 20 years, because of the contamination of oil vapour and leaks occurred in some components inside the SSC vacuum chamber, the vacuum condition has worsened than the beginning. It is a big problem to accelerate the heavier ions. The upgrade for the SSC vacuum system will be an urgent task for us. The rough pumping system of both SFC and SSC will be rebuilt recently. The oil pump units will be changed by large dry mechanical pumps. As a result, the oil vapour in two cyclotrons will be eliminated and the vacuum condition of them will be improved.

MOPCP100	Axial Injection Beam Line of a Compact Cyclotron	254
	J.Q. Zhang, Y. Cao, L.Z. Ma, A. Shi, M.T. Song, L.P. Sun, X.T. Yang, Q.G. Yao, Z.M. You, X.Q. Zhang, X.Z. Zhang, H.W. Zhao, J.H. Zheng IMP, Lanzhou, People's Republic of China
	Axial injection beam line of the therapy cyclotron is presented. It is intended for transportation of the C⁵⁺ ion beam obtained in the permanent magnet ion source. The beam line is only 3.486 m from the ion source to the entrance of spiral inflector, it consists of two sets glasser lens, one set double 90° bend magnet, one quadrupole lens and two solenoid lens. A big vacuum chamber is installed in the vertical part of the beam line, the sinusoidal buncher, the Faraday cap, the slit collimator and chopper are located in the vacuum chamber. The sinusoidal buncher is used for increasing of the seizing efficiency. The Faraday cap is used for the beam diagnostics. The bend magnet with the slit collimator is used for choice of C⁵⁺ ion beam. The chopper is used for choice of the beam utilizing time.

TUA2CCO03	Design and Construction Progress of a 7 MeV/u Cyclotron	317
	B. Wang, D.Q. Gao, H.F. Hao, L.Z. Ma, K.D. Man, M.T. Song, X.W. Wang, X.T. Yang, Q.G. Yao, Z.M. You, J.Q. Zhang, S.H. Zhang, X.Q. Zhang, H.W. Zhao IMP, Lanzhou, People's Republic of China
	The 7MeV/u cyclotron accelerates carbon ions with mass number 12, 5+ charges, the extraction energy of carbon ions is 7 MeV/u, and the beam current density is designed to be 10 eμA. It designed as injector for the HITFiL (Heavy Ions Therapy Facility in LanZhou) synchrotron, which accelerates carbon ions to the energy 300 MeV/u for tumors treatment. Computer modeling results on the axial injection, magnetic, accelerating and extraction systems of the cyclotron are given. Design of the main systems of the cyclotron and the results of beam dynamic simulations are introduced. The construction progress including the ECR ion source, the axial injection beam line, the magnet, the RF system, the vacuum system etc. will be described respectively.
	Slides TUA2CCO03 [1.679 MB]