Thermal analysis and cooling structure design of the primary collimator in CSNS/RCS

ZOU Yi-Qing; WANG Na; KANG Ling; QU Hua-Min; HE Zhe-Xi; YU Jie-Bing

doi:10.1088/1674-1137/37/5/057004

Chinese Physics C> 2013, Vol. 37> Issue(5) : 057004 DOI: 10.1088/1674-1137/37/5/057004

Thermal analysis and cooling structure design of the primary collimator in CSNS/RCS

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Abstract：
The rapid cycling synchrotron (RCS) of the China Spallation Neutron Source (CSNS) is a high intensity proton ring with beam power of 100 kW. In order to control the residual activation to meet the requirements of hands-on maintenance, a two-stage collimation system has been designed for the RCS. The collimation system consists of one primary collimator made of thin metal to scatter the beam and four secondary collimators as absorbers. Thermal analysis is an important aspect in evaluating the reliability of the collimation system. The calculation of the temperature distribution and thermal stress of the primary collimator with different materials is carried out by using ANSYS code. In order to control the temperature rise and thermal stress of the primary collimator to a reasonable level, an air cooling structure is intended to be used. The mechanical design of the cooling structure is presented, and the cooling efficiency with different chin numbers and wind velocity is also analyzed. Finally, the fatigue lifetime of the collimator under thermal shocks is estimated.

References

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ZOU Yi-Qing, WANG Na, KANG Ling, QU Hua-Min, HE Zhe-Xi and YU Jie-Bing. Thermal analysis and cooling structure design of the primary collimator in CSNS/RCS[J]. Chinese Physics C, 2013, 37(5): 057004. doi: 10.1088/1674-1137/37/5/057004

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Received: 2012-07-10
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Thermal analysis and cooling structure design of the primary collimator in CSNS/RCS

Received Date: 2012-07-10

Accepted Date: 1900-01-01

Available Online: 2013-05-05

Abstract: The rapid cycling synchrotron (RCS) of the China Spallation Neutron Source (CSNS) is a high intensity proton ring with beam power of 100 kW. In order to control the residual activation to meet the requirements of hands-on maintenance, a two-stage collimation system has been designed for the RCS. The collimation system consists of one primary collimator made of thin metal to scatter the beam and four secondary collimators as absorbers. Thermal analysis is an important aspect in evaluating the reliability of the collimation system. The calculation of the temperature distribution and thermal stress of the primary collimator with different materials is carried out by using ANSYS code. In order to control the temperature rise and thermal stress of the primary collimator to a reasonable level, an air cooling structure is intended to be used. The mechanical design of the cooling structure is presented, and the cooling efficiency with different chin numbers and wind velocity is also analyzed. Finally, the fatigue lifetime of the collimator under thermal shocks is estimated.

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Thermal analysis and cooling structure design of the primary collimator in CSNS/RCS

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Thermal analysis and cooling structure design of the primary collimator in CSNS/RCS

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