COMMENT ON Jumper gun HVPS interlocks (gun valve/15 deg dipole/SF6 interlocks) for HV testing
Applied jumper to J6 input on gun HVPS interface chassis. ABIL #9449 is made.
For details of adding jumper see - https://logbooks.jlab.org/entry/4474959
Applied jumper to J6 input on gun HVPS interface chassis. ABIL #9449 is made.
For details of adding jumper see - https://logbooks.jlab.org/entry/4474959
Applied a jumper to the gun HVPS J6 input to clear the global/vac interlock.
Fig. 1 shows the rear of the 1U chassis in IN01B02 with jumper installed and usual interlock cable disconnected in-hand.
Fig. 2 shows the face of the 1U chassis prior to applying the jumper (Global Interlock = faulted = unlit)
Fig. 3 shows the same now with J6 jumper added (Global Interlock = okay = lit)
For all magnets up to xBCD dumplettes.
I went through and double checked that all Box supplies and Quads are set to design values. There were a handful of quads set to zero but have now been set (made sure we were good to go in SRM first).
The only magnets not set to design are:
MXM3S03 shunt (see linked Ops PR). Design is setting current over limit.
MARC7A shunts as the box supply is turned off due to YBBS06 issues.
Noticed this shunt 3.67% off design in eDT.
When setting to design setpoint, the control system is requesting 9.057 Amps but shunt throws a current limited alarm and limited to 5.266 Amps.
Put setpoint back where it was to not stress/damage shunt module.
Not sure if eDT is incorrect or the current limiting setpoint is incorrect.
The following box supplies were TURNED ON AT SET POINT 1 by version 2-16 of the Box Supply Cycling Script:
XSEP2T Ramp Rate = 4.972 A/s
XSEP4T Ramp Rate = 4.986 A/s
XSEP6T Ramp Rate = 8.551 A/s
XSEP8T Ramp Rate = 14.597 A/s
XSEPAT Ramp Rate = 14.123 A/s