SLS Operation Statistics

The following picture shows the main figures of the operation statistics for the SLS. More detailed information can be found in the yearly operation reports.

Here are our definitions:

  • Downtime: time between beam loss (Ibeam < 20mA) and full recovery (Ibeam >= Inominal = 400 mA).
  • Short-uptime-rule: if two beam outages have less than 1 hour of uptime in between, it is counted as one long downtime.
  • Scheduled-user-time: this time is distributed between the accepted user proposals
  • Scheduled-user-reserve-time: additional user time, provided to compensate beam outages (introduced 2004)
  • User-Time: Scheduled-user-time + Scheduled-user-reserve-time
  • Delivered-beam-time: User-Time - Downtime
  • Total-downtime: Sum over all individual Downtime of one year
  • Number-of-faults: Count of all individual Downtimes
  • Number-of-distortion = Incidence count of Downtimes, beam drops and orbit feedback failures
  • Availability: Delivered-beam-time / User-Time.
  • Availability after compensation: Delivered-beam-time / Scheduled-user-time.
  • MTBF: Mean Time Between Failures = User-Time / (Number-of-faults + 1)
  • MTTR: Mean Time To Recover = Total-downtime / Number-of-faults
  • MTBD: Mean Time Between Distortions = User Time / Number-of-distortion

The tables below show the detailed statistics for the operation of the SLS in the past years.
 

Beam Time Statistics20162017201820192020202120222023
Swiss Light Source[h][%][h][%][h][%][h][%][h][%][h][%][h][%][h][%]
o total beam time686478.1678477.4682477.9673676.9633672.1668876.3651274.3487255.6
 + user operation501657.1504857.6514458.7505657.7467253.2500857.2496056.6350440.0
    - incl. compensation time1601.81842.11601.81601.81441.61441.6961.1720.8
 + beamline commissioning8009.17929.08409.67608.77608.77288.37448.54485.1
 + setup & beam development104811.994410.88409.692010.590410.395210.96807.692010.5
o shutdown192021.9197622.9193622.1202423.1244827.9207223.7224825.7388844.4
o downtimes at user operation2530443239295036
 + unscheduled outage45 h0.9%63 h1.3%49 h0.9%42 h0.8%96 h2.1%37 h0.7%127.6 h2.6%270 h8.0%
 + injector outage (non top-up)1 h0.0%1 h0.0%3 h0.1%6 h0.1%26 h0.6%17 h0.3%130.2%11 h0.3%
Total beam integral2497 Ah2528 Ah2560 Ah2512 Ah2315 Ah2472 Ah2373 Ah1570 Ah
Availability99.1%98.7%99.1%99.2%98.0%99.3%97.4%92.3%
Availability after Compensation102.4%102.5%102.2%102.4%101.1%102.2%99.3%94.7%
MTBF193.0 h162.8 h114.3 h153.2 h116.3 h166.9 h97.3 h91.6 h
MTTR1.8 h2.1 h1.1 h1.3 h2.5 h1.3 h2.6 h7.5 h
MTBD67 h42 h59 h31 h26 h36 h27 h19 h