Thermal Analysis of CSNS RFQ

OUYANG Hua-Fu; YAO Yuan

Chinese Physics C> 2007, Vol. 31> Issue(12) : 1116-1121

Thermal Analysis of CSNS RFQ

OUYANG Hua-Fu ^, ,
YAO Yuan

Accelerator Center, Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
Water-cooling serves two functions in an RFQ. One is to take away the power dissipated on the inside surface of the RFQ by the RF field to maintain the thermal stability and to limit the deformation of RFQ. The other is to be used to tune the RFQ basically without effecting the field distribution when the RFQ is out of resonance, since the beam transmission of RFQ is very sensitive to the field profile, the ordinary frequency tuning method by the movable tuners is no more adopted in an RFQ operation. The cooling water channel position and number, as well as the optimum cooling water temperature are determined through thermal analysis. In addition, the tuning method by adjusting the cooling water temperature is determined when the RFQ is out of resonance.

References

[1]

. OUYANG Hua-Fu, FU Shi-Nian. Study of CSNS RFQ Design. Linac06, Knoxville, TN, 20062. FU Shi-Nian, GUAN Xia-Ling, FANG Shou-Xian. J. Korean Phys. Soc., 2006, 48(4): S806-8093. OUYANG Hua-Fu, FU Shi-Nian, GUAN Xia-Ling et al.HEP NP, 2004, 28(7): 753-757 (in Chinese) (欧阳华甫, 傅世年, 关遐龄等. 高能物理与核物理, 2004, 28(7): 753-757)4. Dittus F W, Boelter L M K. University of California Berkeley Publications on Engineering, 1930. 4435. McAdams W H. Heat Transmission. 3rd. New York:McGraw-Hill, 19546. Petkhov B S. Advances in Heat Transfer. New York: Academic Press Inc., 1970. 504-564

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OUYANG Hua-Fu and YAO Yuan. Thermal Analysis of CSNS RFQ[J]. Chinese Physics C, 2007, 31(12): 1116-1121.

OUYANG Hua-Fu and YAO Yuan. Thermal Analysis of CSNS RFQ[J]. Chinese Physics C, 2007, 31(12): 1116-1121. shu

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Received: 2006-12-06
Revised: 2007-01-08

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沈阳化工大学材料科学与工程学院沈阳 110142

Thermal Analysis of CSNS RFQ

OUYANG Hua-Fu ^,
YAO Yuan

Corresponding author: OUYANG Hua-Fu,

Accelerator Center, Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2006-12-06
Accepted Date: 2007-01-08
Available Online: 2007-12-05

Abstract: Water-cooling serves two functions in an RFQ. One is to take away the power dissipated on the inside surface of the RFQ by the RF field to maintain the thermal stability and to limit the deformation of RFQ. The other is to be used to tune the RFQ basically without effecting the field distribution when the RFQ is out of resonance, since the beam transmission of RFQ is very sensitive to the field profile, the ordinary frequency tuning method by the movable tuners is no more adopted in an RFQ operation. The cooling water channel position and number, as well as the optimum cooling water temperature are determined through thermal analysis. In addition, the tuning method by adjusting the cooling water temperature is determined when the RFQ is out of resonance.