Recent Log Entries
iocse3 restored
iocse3 restored
iocse3 restored
Late Entry: 10A trim values downloaded
1L12 insulating vacuum
COMMENT ON ARC3 PS Mains High Power Testing Into Resistive Load and Commissioning
COMMENT ON ARC3 PS Mains High Power Testing Into Resistive Load and Commissioning
This morning we swapped NSH3 and NSH4 PWM boards to see if the current sharing problem will move with the board, and it did. After that we reviewed the board in question and it seems the board is a recent build and the feedback resistor installed are possibly 5% lower than the ones in other board. At this moment we don't have any spares which are closely matched.
The manufacturer had informed us in the past that it is fine to run at 10% higher or lower when current sharing (per section).
Beam Authorization Updated
COMMENT ON Replace MQRAR03 and MQK9A31 20A Trim Power Supplies
QuickPic - RADCON checklist
COMPLETED MPS BLM replacement in 1L12 and 2L08
Unassigned Trim Cards
The following cavity histories have been updated: 1L12-2
The following cavity histories have been updated:
1L12-2
Username: kerns
Date/Time: 01-05-23_11:19:12
RF Status: Bad
Tuner Status: Bad
Comment: Cavity detuned to 1497.12Mhz and bypassed. Not to be tuned to resonance for beam OPS.
Special Instructions:
Follow-up Re: COMMENT ON Install helium mass flow sensor in 1L12 return U-Tube
COMMENT ON Install helium mass flow sensor in 1L12 return U-Tube
1L12 return U-Tube has been installed and sensor has checked out OK as far as resistance & temperature diode connections
AB - 24.2 ohms
CD - 24.9 ohms
EF - 24.8 ohms
GH - 0.734 volts
JK - 0.734 volts
The chassis is installed and Gary is finishing up a couple software changes, it will be online shortly.