November 14, 2018 - Group Meeting

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Fall 2018 Run, January 2019 SAD and Beyond...

2018 CEBAF Fall Run

Program through Christmas
Tue 11/20 - Hall A turns off for rest of the year
Mon 11/26 - Linac and Pass changes (ABCD = Off/4/2/5.5) => Wien change for B
Mon 12/10 - Linac and Pass changes (ABCD = Off/4/3/5.5) => Wien change for B
Thu 12/20 - Machine off at 8am for Holiday break
Gun2 QE
Gun2 lifetime and recent QE scan
Spot Move 11/15/18
High Polarization in Hall B
Hall B Moller and Beam Energy
Mott measurements
SF6 Relief Valve
SF6 relief valve leaky
On-Call Repair
Easy Button Not So Easy
Hall A Laser restoring
Vertical Wien Filter Current Instability
Vertical Wien PS instability addressed
PQB Studies
Low QE => Large Q Asym
Helicity board signal vs. setpoint

2018 LERF Status

LERF Driver Laser Enclosure Certified
LERF PSS Certification - Support for Gun and Laser enable

January 2019 CEBAF SAD

Heat/Activate Gun2 Photocathode SLSP
John ordered small tank to top off SF6
Install RTP Pockels cell
Implement 1kV anode safe floating bias supply inline with anode-picoammeter
Fiducialize IHA2D00 for Bubble
Accelerator electricians to install two new racks + cable tray in ISB for 200KV Wien HVPS and address iocin6 load
Install DBR?

Beyond