Beams Document 4020-v1

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ASTA/NML Transverse Profile Station: Testing and Installation

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Amber S Johnson
Updated by:
Amber S Johnson
Document Created:
13 Dec 2011, 14:11
Contents Revised:
13 Dec 2011, 14:11
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13 Dec 2011, 14:11
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A prototype transverse beam profile monitor for the superconduct- ing rf electron linac at ASTA/NML has been successfully installed and tested at the A0 Photoinjector. The initial tests were performed at a beam energy of 15 MeV and with micropulse charges ranging from 20-500 pC. For operation at ASTA/NML, a low-power, tune-up beam will be selected from the possible 3.2 nC/bunch at 3 MHz for 1 ms at a 5 Hz repetition rate. The 4-position actuator is equipped with two intercepting radiation converter screens: a 1 μm thin Al foil for optical transition radiation and a 100 μm thick single-crystal scintillators of either YAG:Ce or LYSO:Ce. The optical system provides better than 20 μm resolution with an 18 mm vertical field of view. Installation aspects at ASTA/NML will also be addressed.
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