Thermal analysis for wire scanners in the CSNS Linac

	Thermal analysis for wire scanners in the CSNS Linac
	Yang T(杨涛); Fu SN(傅世年); Xu TG(徐韬光); Yang, T; Fu, SN; Xu, TG; Xu, ZH; Meng, M; Qiu, RY; Tian, JM
刊名	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
	2014
卷号	760 页码:10-18
关键词	CSNS Linac The maximum temperature Beam and geometric parameters Wire sublimation Restraining the thermionic emission
英文摘要	3 MeV H beam from the Radio Frequency Quadrupole (RFQ) will be accelerated to 80 MeV in the CSNS (China Spallation Neutron Source) linear accelerator (Linac). The wire scanner is used to measure the transverse beam profile and the emittance, and the carbon or tungsten wire is considered to use. Thermal analysis of the wire scanners in the Linac is presented in this paper. The maximum temperature (T,) of the wire decreases as the beam energy increases, and we also calculate the influence of all possible parameters on T-m. T-m, of carbon wire is significantly lower than tungsten wire if both the beam parameters and wire geometric parameters are set to the same, which can be attributed to its higher heat capacity and radiant emissivity. In addition, we present the results of sublimation rate of the wire, which show that tungsten wire has a much lower evaporation rate than carbon wire in the same temperature, which can be attributed to the different vapor pressures of the two materials. To limit the thermionic emission, the maximum beam frequency approximately has an exponential relationship with beam rms size at a certain beam pulse width. (C) 2014 Elsevier B.V. All rights reserved.
学科主题	Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
收录类别	SCI
WOS记录号	WOS:000338350500003
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225218]
专题	高能物理研究所_加速器中心中国科学院高能物理研究所_中国散裂中子源
推荐引用方式 GB/T 7714	Yang T,Fu SN,Xu TG,et al. Thermal analysis for wire scanners in the CSNS Linac[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2014,760:10-18.
APA	杨涛.,傅世年.,徐韬光.,Yang, T.,Fu, SN.,...&李芳.(2014).Thermal analysis for wire scanners in the CSNS Linac.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,760,10-18.
MLA	杨涛,et al."Thermal analysis for wire scanners in the CSNS Linac".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 760(2014):10-18.