KCWI

Before committing to wanting a battery, I want to know how it will be cabled. Can it be made to interface with KCWI’s power cable? If yes, I want a battery. If no….. not sure. As we are on sky that night, I have no interest in actually rewiring the electronics in the electronics cabinet.

Procedure Before power down

Note: Rosalie will warm the detector by 5 deg C the day before. Normal operation temps are blue -110.1 deg C (163 K) and red -125.0 deg C.
MORE PROBLEMS THEN I GUESSED, THE UPS SECTION NEEDS TO BE MODIFIED TO HAVE A “KCWI START KRDS” AFTER POWER IS SWITCHED TO THE UPS, BECAUSE THE CONTROLLER DOESN’T KNOW WHAT TEMP TO MAINTAIN WITHOUT SETTINGS SENT FROM KCWISERVER ONCE.
With a UPS:
- Both sides of KCWI will be filled on 11/5 and 11/7. Fills are skipped on 11/6.
- With comms, after the red LN fill: Immediately prior to power down, summit techs should open an xterm@kcwiserver from the k2-insttech (vm-k2obs:2) background menu, and type kcwiOutagePowerDown "off" to run the script to shut most of KCWI down, leaving on the Blue Lakeshore (blue temp control), the Red detector (red temp control), blue and red ion pumps (pressure control), and the lantronix (comms with ion pumps).
- Manually:
  - Run kcwiPowerDown script (same as if we were installing or removing KCWI from the telescope. On k2-insttech (vm-k2obs:2), from the background menu → KCWI Control → KCWI Engineering → Power Down KCWI. Answer any required questions and watch to make sure it is powered down successfully.
  - Go up to KCWI and physically switch to UPS power. Open the electronics cabinet door and position a Tall Ladder for access.
  - Physically turn on Eaton 1 (green Power light should light up) and turn on plug 4, a (orange?) light should show over the 4. This is the Blue Lakeshore / blue detector heater. Turn on the Blue Lakeshore if it doesn’t turn on automatically. It should monitor and control the temp of channel 1 (blue detector) automatically.
  - Physically turn on Eaton 2 (green Power light should light up) and turn on plug 3, a (orange?) light should show over the 3. This is the Red detector controller/heater. It should turn itself on.
  - Check the UPS. If time/voltage draw looks reasonable (>2 hrs power remaining), we want to turn on the ion pumps.
    - Physically turn on plugs 6 on BOTH Eaton 1 and 2.
    - Climb the Tall Ladder to the Very Top of the electronics cabinet to access the Ion Pumps.
    - For BOTH BLUE AND RED: Press the blue power button (bottom left corner) and see the power light come on.
    - For BOTH BLUE AND RED: Once powered up, Press and HOLD the red HV (high voltage) button in the upper left corner until the light comes on and the display shows pressures, likely around 2-4e-6 torr.
    - Ion pumps look like this, although you will only see the screen:
If on UPS power, leave electronics cabinet door OPEN.
Without a UPS or battery:
- KCWI red must be filled first thing in the morning. Do not worry about running the move away script, just leave the stages locked.
- Run the kcwiPowerDown script (same as if we were installing or removing KCWI from the telescope). On k2-insttech (vm-k2obs:2), from the background menu → KCWI Control → KCWI Engineering → Power Down KCWI. Answer any required questions and watch to make sure it is powered down successfully. If possible, go flip OFF the power switch on KCWI to isolate it.

Procedure during the power down

Pray to your favorite goddesses.
If on UPS power:
- Check the Blue detector temp on the Blue Lakeshore. Channel 1 is the blue detector. Good temps are 158 – 168 K.
- Check the pressures on the Ion Pump screens (Tall Ladder, sorry!). Likely 2.0-6.0 e-6 torr.

Procedure to bring back the system

Bring up the servers: start kcwiserver first. After most the rest of the instrument servers are up, please bring up kcwitarg.
If on a UPS, climb the tall ladder and turn off HV + power on the ion pumps. Then turn off Lakeshore. Then turn off each powered plug on Eaton 1 and 2.
Switch KCWI back to facility power.
If the servers are up:
- Summit techs should run the kcwiPowerUp from the engineering menu (same as if KCWI had just been installed or removed). On k2-insttech (vm-k2obs:2), from the background menu → KCWI Control → KCWI Engineering → Power Up KCWI. Answer any required questions and watch to make sure it is powered down successfully.Call Rosalie once this is done, so she can monitor the power uprestore the proper temperature settings
If the servers are not up:
- Go up to KCWI and make sure KCWI is physically switched on. Open the electronics cabinet door and position a Tall Ladder for access.
- Physically turn on Eaton 1 (green Power light should light up) and turn on plug 4, a (orange?) light should show over the 4. This is the Blue Lakeshore / blue detector heater. Turn on the Blue Lakeshore if it doesn’t turn on automatically. It should monitor and control the temp of channel 1 (blue detector) automatically. Normal operations temp is 163 K, so 158 - 168 K is an ok range.
- Physically turn on Eaton 2 (green Power light should light up) and turn on plug 3, a (orange?) light should show over the 3. This is the Red detector controller/heater. It should turn itself on. No way to monitor this.
- To turn on the ion pumps:
  - Physically turn on plugs 6 on BOTH Eaton 1 and 2.
  - Climb the Tall Ladder to the Very Top of the electronics cabinet to access the Ion Pumps. They look like this, although you will only see the front:
  - For BOTH BLUE AND RED: Press the blue power button (bottom left corner) and see the power light come on.
  - For BOTH BLUE AND RED: Once powered up, Press and HOLD the red HV (high voltage) button in the upper left corner until the light comes on and the display shows pressures, likely around 2-4e-6 torr.

Leave electronics cabinet door OPEN.
Call Rosalie with any questions, extension 3584 or 925-876-4788