LASER BEAM PROFILE MONITOR DEVELOPMENT AT BNL FOR SNS.
A beam profile monitor for H{sup -} beams using laser photoneutralization is being developed at Brookhaven National Laboratory [1] for use on the Spallation Neutron Source (SNS) [2]. An H{sup -} 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{sup -} beam struck by the laser, and the perturbation of the beam current caused by the laser is measured. The laser trajectory is stepped across the ion beam generating a transverse profile. Proof-of-principle experiments were done at 750keV and 200MeV. Also a compact scanner prototype was used at Lawrence Berkeley National Laboratory (LBNL) [3] during commissioning of the SNS RFQ.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- DOE/SC (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 801417
- Report Number(s):
- BNL-69324; R&D Project: 86485; 39KC0200; TRN: US0205348
- Resource Relation:
- Conference: THE 21ST INTERNATIONAL LINAC CONFERENCE LINAC 2002, GYEONGJU (KR), 08/19/2002--08/23/2002; Other Information: PBD: 19 Aug 2002
- Country of Publication:
- United States
- Language:
- English
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