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Crew Chief Timesheet Summary: 25 Aug 2026 SWING
Crew Chief Timesheet Summary: 25 Aug 2026 DAY
COMMENT ON RF 1L08 Upgrade network infrastructure installation
COMMENT ON PSS General maintenance tasks for SAM 2026
APPROVED PSS General maintenance tasks for SAM 2026
APPROVED CHL Control Room Network Infrastructure Relocation
APPROVED Cryo SL CAMAC to PLC Upgrade network infrastructure installation
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Bunch Length Measurements w/ Prebuncher ON
MOLLER install 08/25/2026
Hall A techs installed guard rails around pivot platform. MSS group started installation of upstream girder support. Target group marked, and started process of removing paint along Right HRS.
Chopper Scan Setup & Measurements with Prebuncher Off
C beam used for all measurements. High interception on A2 prompted slight resteering. ITV0I04 viewer captured with attenuator at 100 which corresponds to ~200 nA of CW. Attenuator of 190 = 10 uA, 275 = 40 uA, and 335 = 70 uA.
Figs. 5 & 6 are the chopper viewer with the prebuncher on and off.
Figs. 7-10 show the scans used to find the maximum transmission through the B slit
Figs. 11-13 show some checks on the viewers as I noticed FC1 was only getting ~45 uA of the 70 uA coming off the gun, even with the B slit retracted.
Follow-up Re: SLinac 2K Trip Preparations
Liquid levels have been lowered to a nominal 78%. Most are well behaved, but some (2L05, FL02 as examples) have a periodicity to their liquid levels. Some changes were made to their PID controls to dampen these oscillations, but they should be fine until the planned trip tomorrow morning.










