Weekly and anual operation statistics for the SLS are given here
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??? info "Definitions used for the presented statistics"
* Scheduled-user-time: this time is scheduled upfront and distributed between the accepted user proposals
* Reserve-time: additional user time, provided to compensate for beam outages (often scheduled mid and end of year, not always used for user operation)
* User-operation: Scheduled-user-time + Reserve-time
* Downtime: time between beam loss (Ibeam < 20 mA) and full recovery (Ibeam >= Inominal = 400 mA) during user-operation
* Short-uptime-rule: if two beam outages have less than 1 hour of uptime in between, it is counted as one long downtime.
* Total-downtime: sum of all individual downtimes of one year
* Total-beam-time sum of all scheduled beam times (user, beamline, machine, ...)
* Machine development sum of scheduled beam times (user, beamline, machine, ...)
* Delivered-beam-time: User-operation - Total-downtime
* Number-of-faults: incidence count of all individual Downtimes
* Injector-outage-time: time between beam drop (Ibeam < 390 mA) and full recovery (Ibeam >= Inominal = 400 mA) during user-operation
* Number-of-distortions: incidence count of faults and beam drops, orbit feedback failures, low beam-lifetimes (tau < 8 hours), beam blow ups (sigy > 15 um) and distorted filling patterns
* Availability: Delivered-beam-time / User-operation
* Availability after compensation: Delivered-beam-time / Scheduled-user-time.
* MTBF: Mean Time Between Failures = User-operation / (Number-of-faults + 1)
* MTTR: Mean Time To Recover = Total-downtime / Number-of-faults
* MTBD: Mean Time Between Distortions = User Time / Number-of-distortion
More information is available in [Phys. Rev. Accel. Beams 19, 082802](https://doi.org/10.1103/PhysRevAccelBeams.19.082802) and [here](http://gfa-operation.intranet.psi.ch/kr/sls/sls_opstat.php).
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