What to do when things go Bad -- TWIST Hardware Trouble

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Midas Web Interface | Electronic Log book

This page describes some basic procedures for how you should react to various system alerts (ie. Status Bar buttons going red). Whenever anything goes wrong, you should note it in the ELog. Note: if you have to turn off a PostAmp crate, it is best to first stop the slow controls monitoring program fepa. If you can't do this (or forget) you MUST (when power is restored) go the PostAmp display on the StatusBar and do Set Hardware / Set All. If you don't do this, the Red Buttons on the PostAmp display will stay forever.

If a button goes red, push it. A window will appear with more detail about what's gone wrong with which system.

PostAmp temperature
  1. Stop the run.
  2. Open the Area.
  3. Note which crate is too hot.
  4. Turn off power to the overheating PostAmp crate.
  5. Call Grant Sheffer.

FastBus temperature
  1. Stop the run.
  2. Turn off power to both FastBus crates. (The "POWER" switches on the things labelled "PostAmp Power Supply".)
  3. Check the Air Conditioning unit.

FastBus humidity
See FastBus Temperature.

Room temperature
Suffer. :-( (Although there is an Air Conditioning control in Economy Class...)

Gas Valve
  1. Stop the run.
  2. Open the Area.
  3. Note which gas system (DC or PC) is affected.
  4. Turn off the High Voltages to the affected systems (ie. all DC's or all PC's).
  5. Call a Gas Systems expert

Last updated 25 May 2002 by Robert MacDonald.

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