Beams Document 5675-v1

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Beam Emittance using MW in MI8 for two different LINAC beam Currents

Document #:
Beams-doc-5675-v1
Document type:
Other
Submitted by:
Chandrashekhara M. Bhat
Updated by:
Chandrashekhara M. Bhat
Document Created:
23 Jul 2017, 15:35
Contents Revised:
23 Jul 2017, 15:35
Metadata Revised:
23 Jul 2017, 15:35
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Abstract:
On Feb 18th, 2016 Ming-Jen et. al., have measured a) beam transverse emittance in the MI 8 Beam line as function number of Booster turn (up to a maximum booster turn of 16) and b) contribution to the beam emittance due to the stripping foil (Beams-Doc-5247-V1). Subsequently a similar measurement was carried out on Dec. 29, 2016 with up to 20 Booster turns, but with about 11% more beam than previous measurements. During these two measurements the LINAC beam current were about 25 mA and 21 mA, respectively. Using these measurement data we find the following: 1) the beam emittance growth pattern in the 2nd measurement was significantly different from that of the 1st measurement., 2) at ~4.8E12 ppBc the transverse emittance of the beam from the Booster at extraction was nearly 3-mm-mr less than that measured at higher LINAC beam current
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