Heated puck # 3 in oven and soaked between 500 and 515 C for 30 minutes. Heater at 9.0 Amp and 4.25 V. Vacuum went from 1.5 nA to 108 nA. When stopped soaking, degassed Cs source at 4.7 A (0.96 V) for 10 seconds; vacuum went from to 63 nA to 100 nA.
Will activate early in the morning.
Called in to look at why 2L02 and 2L16 had no heater readbacks during Cryo fill. With Alex Shenenberger and Joe Sawyer (IC), we where able to troubleshoot 2L02 to where we thought the DAC card wasn't being addressed with 0.0 watt heater heat. After consulting with our software Kyle, we needed to reboot IOCSL1 so that he could see what was happening. Got a hold of Cryo Jonathan Creel and gave him an option to put the MOPS in local mode to keep approximately 100-104 watts of heater heat or we could have software try to look at after rebooting IOCSL1.
I&C, RF and Software investigated 2L02's heater problems. I&C and RF checked the CAMAC DAC, MOPS, and confirmed wiring matches drawings/compared to 2L04.
Found that writes to the DAC were not reaching hardware. There was no N light response.
Ran camac_io_report(2) on iocsl. Found Crate 2: "Crate Not Present" (53261 errors). The serial highway driver cannot see the crate. Crate 4 looked fine which has the controls for 2L04. Likely a crate controller or serial highway cabling issue. A power cycle/reboot will be needed. With the pumpdown, Cryo prefers not to power cycle the IOC this weekend.
At approximately 14:13 the flashing alarm in the MCC started beaconing along with an audible alarm for building 97 counting house.
Crew Chief contacted, advised evacuating personnel from Injector so SSO would be able to respond.
Guard Gate Post 2 contacted, informed that Fire Department was contacted and dispatched.
When responders arrived they surveyed the counting house and determined that there was no danger, and also that no alarms in the building were going off. They requested that we disable the alarm at the fire control panel in the MCC.
Spoke to crew chief.
Told them we are stabilizing and filling the priority modules 06,07,09,11,13,15,16,19,20,21 as we can.
We can typically fill 2-3 modules at a time.
Told them they could turn on RF in modules as they hit 90%
Also reminded them the LEM REQ values must be set slightly higher than the expected RF heat for the compensation program to function.
Alex and I exercised the local/remote switch after checking the heaters at 50W and finding only 3.6W of heat. After checking cables and returning switch to manual with 50W requested, we got 50W readback at requested. Cryo turned all the heaters up to requested 25W soon after and its 26W for 2L16. Quick T/S and most likely cause is relay in MOPS not kicking in !!
| Shift | Day |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Richardson |
| MCC Operators | |
| Program Deputy | Forman |
| Announcements |
