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Trips

User Guide › Trips

The Trips tab lists Fast ShutDown (FSD) trips: short interruptions when the FSD system removes beam because of a fault. DTM gets them from the FSD system; nobody enters or edits them in DTM.

A trip that lasts more than 5 minutes should be recorded as a downtime event, with an incident for the component that caused it (see Recording downtime). DTM doesn't do this for you. That is also why reports count only trips of 5 minutes or less as trip downtime: longer ones are counted through their incidents.

The list

Each row shows the faulted systems (joined with "+", or "<< PHANTOM >>" when no system is known, with "(N)" when more than one device faulted and "^" while the trip is still open), when it went down and how long it lasted. Hover over the time for seconds, and over the duration for the time up.

Click a row to expand it:

  • Cause and Area, which DTM works out from the faulted devices. Causes include a device category such as Magnets or Vacuum, "Hall", "Multiple/Other", "Unknown/Missing", and finer ones such as "RF (C25/50)", "RF (Multi/Other)", "MPS (BLM)" or "Dump (Insert.)". Areas are Accelerator, Accelerator (RF), Hall A to D, Multiple or Unknown.
  • Trip ID.
  • Machine State: the accelerator's and each hall's state when it tripped.
  • Faulted FSD Channel: the node, channel and path, with each faulted device's category, system, CED type and name, whether it is confirmed, and its region.

Filtering

Open the filter with Choose...:

  • Date Range: trips that started in the range.
  • Min Trip Duration, Max Trip Duration, in seconds, minutes or hours.
  • Machine State: the accelerator state (PHYSICS, OFF, DOWN, ACC, RESTORE, STUDIES) and each hall's state (OFF, DOWN, TUNE, BANU, UP).
  • Cause, Area, System, CED Type, CED Name: text, with % as a wildcard.
  • Max CED Types Per Trip, Max Devices Per Trip, the FSD Node and Channel #, and Trip ID.

Show 10, 25 or 100 trips per page. Export downloads the list as CSV (one row per trip) or CSV (Exploded) (one row per faulted device). The export doesn't apply the Area and Machine State filters, so it can have more rows than the page.

The trip reports are Reports › FSD Summary and the trip counts in Reports › Downtime Summary; see Reports.