Web XAS relies on several processes running on the beam line computer in order to function correctly:

  • ICS (Instrument Control System)
  • osi_daemon.exe
  • daq_main.exe
  • daqs.exe
  • xasutils_serve.exe
  • dxp_epics.exe (on beam lines where Web Ge is used with DXP electronics - i.e., 9-3)

Problems with any of these underlying processes or hardware will manifest as problems with Web XAS.

If Web XAS is frozen, not responding, acting weird...

  1. If the browser is responsive, log out of Web XAS (3-line menu → Log Out).
  2. Exit the browser completely.
  3. Stop the processes: "collect stop" or "set_user none" at the terminal command prompt.
  4. Shut ICS down: run ics_cpc.exe in the terminal and enter 4.
  5. (Optional) Power cycle problematic hardware. If you are unsure how to do this, call beam line staff.
  6. Restart ICS: run ics_cpc.exe in the terminal and enter 3. This often takes several tries.
  7. Set yourself as the Web XAS user: "set_user b_username" at the terminal command prompt.
  8. Relaunch the browser and log in to Web XAS. This will automatically restart the processes needed.
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