Experience with beam loss monitors in the low energy demonstration accelerator.

Sellyey, W.

Technical Information Center Oak Ridge Tennessee

关键词: Accelerators;    Monitors;    Beam monitors;    LANL;    Beam transport;   

RP-ID  :  DE2001768986

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

This paper will discuss the operational experience with the Ionization Chamber Beam Loss Monitors (ICBLM) in the Low Energy Demonstration Accelerator facility at LANL. LEDA is a test bed for a 6.7-MeV, CW, 100-mA proton radio frequency quadruple (RFQ). There are three ICBLM'S located in a short beam transport downstream of the RFQ. (This transport is called HEBT for High Energy Beam Transport.) Their function is to convey beam loss information to the operators and to protect the accelerator from being damaged by large beam spills. Signals from the ionization chambers are ten times less than expected. This results in a signal to drift ratio of 0.4 for a 1 ma beam loss and prevents protection of the machine below 2.5 ma loss. Since it is important to protect the machine down to 0.2 ma loss, improvements in and alternatives to the ICBLM are being investigated and will be implemented.