Laser beam-profile monitor development at BNL for SNS

被引：0

作者：

Connolly, R ^{[1
]}

Cameron, P ^{[1
]}

Cupolo, J ^{[1
]}

Gassner, D ^{[1
]}

Grau, M ^{[1
]}

Kesselman, M ^{[1
]}

Peng, S ^{[1
]}

Sikora, R ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

BEAM INSTRUMENTATION WORKSHOP 2002 | 2002年 / 648卷

关键词：

D O I：

暂无

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A beam profile monitor for H- beams based on laser photoneutralization is being developed at Brookhaven National Laboratory (BNL) for use on the Spallation Neutron Source (SNS) [1]. An H- ion has a first ionization potential of 0.75eV and can be neutralized by light from a Nd:YAG laser (lambda=1064nm). To measure beam profiles, a narrow laser beam is passed through the ion beam neutralizing a portion of the H- beam struck by the laser. The laser trajectory is stepped across the ion beam. At each laser position, the reduction of the beam current caused by the laser is measured. A proof-of-principle experiment was done earlier at 750keV. This paper reports on measurements made on 200MeV beam at BNL and with a compact scanner prototype at Lawrence Berkeley National Lab on beam from the SNS RFQ.

引用

页码：150 / 161

页数：12

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