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Sputtering of Materials for MEBT Absorber and PXIE Beam Dump

Document #:
Project X-doc-1091-v2
Document type:
technical note
Submitted by:
Yury I Eidelman
Updated by:
Yury I Eidelman
Document Created:
02 Aug 2012, 10:47
Contents Revised:
02 Aug 2012, 10:53
DB Info Revised:
02 Aug 2012, 11:00
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Abstract:
Effect of sputtering was analyzed for different materials used for the MEBT absorber and beam dump of PXIE. The known experimental data are presented as well as the method of calculations, consistent with these data. Rate of yield of the sputtered atoms is estimated for nickel and molybdenum, used as materials for the MEBT absorber and PXIE beam dump, respectively. It is shown that the parameters of the proton beam in the fall it on molybdenum MEBT absorber (2.1 MeV x 10 mA = 21 kW) and on the nickel PXIE beam dump (30 MeV x 1.7 mA = 50 kW) the phenomenon of sputtering target material is negligible in terms of expected duration of operation of these devices.
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