The Gun valve is under EPICS control. Will remove gun LOTO Monday morning.
The anode is now connected to the anode pico-ammeter (through protection box).
The only noteworthy issue was that the Transverse Manipulator disengaged again, as it had during the previous activation.
Completed RF 1.0 Legacy zones Miram curve characterization in the 18 zones in the south that are RF 1.0
144 cavities minus a number of cavities already bypassed (14 cavities) and some other cavities (3 cavities) needed to be bypassed to complete curves due to high KMAI trips. Total of 127 Miram curves were obtained. 51 of them would require an increase in filament voltage and 71 would require a decrease in filament voltage, and 4 cavities require no change , according to results.
This ioc is a known issue since Friday, but has only been briefly blipping out of comms for no more than a few minutes. After it dropped for longer than 10 minutes, consulted with RF on call and was advised that as long as the FPGA in the heater chassis is still working, it's safe to leave the ioc issue until Monday. Locally checked the chassis, and the FPGA heartbeat light is still illuminating despite the ioc HB being off.
Arc A ion pumps briefly railed around VIPAA04 and VIPAA05. Came back down on its own. VIPAA05 is still elevated but slowly recovering. Seems like this happens on occasion. It was previously OpsPr'd then closed. The instruction in the comment says to re-open if necessary.
The SLSP-5247-4 GaAs photocathode mounted on puck #3 has been activated with 8 yo-yo's (full-area). The puck has been inserted in the gun with the ear at about 15 degrees CCW from the vertical direction (same angle as before). At the long manipulator, this corresponds to 25 degrees.
The HV bias was set to "5" on the battery box. The picoammeter was set 200 nA Full Scale then 2 uA after during the first Cs peak.
The Cs was heated with 4.6 A (0.98 V) and vacuum went to 8 nA. The first QE Cs peak started to show up after 8 minutes.
| Shift | Day |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Blackshaw |
| MCC Operators | Barker |
| Program Deputy | Park |
| Announcements |
