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  1. Before turning anything off, disable the IOCs running on the server in the mobile rack.  
    1. Open iocmanager and sort by the "Host" column to list the IOC processes running on the rack's server.  
    2. Move your attention to the "State" column, and for each IOC select "Off" in its respective cell.  
    3. Navigate to the "Configuration" dropdown on the top left and click "Apply".  This will only work if your UNIX account has CXI iocmanager privileges.  You will be prompted to enter your username and password!  A pop-up window appear somewhere inconvenient and ask you to confirm your actions.  
    4. Confirm your actions..

  2. Powering down the rack should be carried out in the following steps:
    1. Make sure the detectors are powered down via EPICS.
    2. Go to the rack and power down each module chassis using its front or real panel power button/switch if it has one. 
    3. Switch off the surge protectors on the rear side of the rack.  
    4. Unplug the surge protectors from the stand power outlets on the stand.

  3. Carefully disconnect the grounding cable and CSPAD trunk cable TOP and BOTTOM connectors from the detector chamber flange using a hex wrench.  The pins of these connectors are fragile.  Disconnect motor and vacuum gauge cables from points J1→J7 on the I/O panel mounted to the detector stand.  Keep the cables connected to their interfaces on the rack itself as they will be needed again.  
  4. Look down. There are a few ethernet cables running from the rack to a patch panel beneath the detector stand.  These are for connecting the rack's electronics to the CXI controls network.  Disconnect them from the patch panel.
  5. There are a number of BNC cables and multimode fibers running from the CSPAD concentrator and detector PDU to nearby patch panels.  These are for detector timing and data and go to servers elsewhere in the hutch.  Disconnect them from the patch panel.
  6. Disconnect the copper grounding cable attached to the bottom of the rack.

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  1. Lorem ipsum
  2. Wingardium leviosa
  3. Avada kedavra
  4. Don't daisy-chain power!

Detector and Chamber Troubleshooting

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