slsop statistics.png

The operation metrics for the SLS is defined as:
  • 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 for beam outages
  • 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 (introduced 2004)
  • 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
  • MTTR: Mean Time To Recover = Total-downtime / Number-of-faults
  • MTBD: Mean Time Between Distortions = User Time / Number-of-distortion
The table below show the detailed statistics for the operation of the SLS:
Beam Time Statistics 2011 2012 2013 2014 2015 2016
Swiss Light Source [h] [%] [h] [%] [h] [%] [h] [%] [h] [%] [h] [%]
o total beam time 6824 77.9 6928 78.9 6904 78.8 6888 78.6 6872 78.4 6848 78.0
 + user operation 5000 57.1 4968 56.6 5032 57.4 4984 56.9 5056 57.7 5016 57.1
    - incl. compensation time 160 1.8 160 1.8 216 2.5 160 1.8 160 1.8 160 1.8
 + beamline commissioning 976 11.1 968 11.0 816 9.3 832 9.5 728 8.3 800 9.1
 + setup & beam development 848 9.7 992 11.3 1056 12.1 1072 12.2 1088 12.4 1032 11.7
o shutdown 1944 22.2 1864 21.2 1864 21.3 1880 21.5 1896 21.6 1944 22.1
o downtimes at user operation 53 59 66 37 46
 + unscheduled outage 65 h 1.3% 63 h 1.3% 186 h 3.7% 123 h 2.5% 49 h 1.0%
 + injector outage (non top-up) 22 h 0.4% 22 h 0.5% 27 h 0.5% 10 h 0.2% 11 h 0.2%
Total beam integral 2506 Ah 2369 Ah 2447 Ah 2455 Ah 2497 Ah
Availability 98.7% 98.7% 96.3% 97.5% 99.0%
Availability after Compensation 101.9% 102.0% 100.6% 100.8% 102.3%
MTBF 94.3 h 84.2 h 75.1 h 131.2 h 107.6 h
MTTR 1.2 h 1.1 h 2.8 h 3.3 h 1.1 h
MTBD 38 h 37 h 24 h 55 h 35 h
Beam Time Statistics 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Swiss Light Source [h] [%] [h] [%] [h] [%] [h] [%] [h] [%] [h] [%] [h] [%] [h] [%] [h] [%] [h] [%]
o total beam time 3576 41 6044 69 6792 77 6616 75 6608 75 6768 77.3 6912 78.9 6824 77.7 6704 76.5 6720 76.7
 + user operation 1016 12 4472 51 5288 60 5116 58 4952 56 5160 58.9 5200 59.3 5160 58.9 5007 57.1 5191 59.3
    - incl. compensation time - - - - - - 175 2 175 2 144 1.6 144 1.6 144 1.6 144 1.6 227 2.5
 + beamline commissioning 256 3 992 7 696 8 696 8 792 9 696 8.0 880 10.0 848 9.7 896 10.2 680 7.8
 + setup & beam development 2304 26 576 11 808 9 804 9 864 10 804 10.3 832 9.5 816 9.3 800 9.1 845 9.7
o shutdown 5184 59 2720 31 1968 23 2168 25 2152 25 2168 22.7 1856 21.2 1968 22.4 2064 23.6 2048 23.3
o downtimes at user operation   149 115 85 67 84 95 78 68 76
 + unscheduled outage no data 258 h 6% 307 h 5.8% 190 h 3.7% 82 h 1.6% 236 h 4.8% 138 h 2.6% 218 h 4.2% 66 h 1.3% 214 h 4.1%
 + injector outage (non top-up) no data 54 h 1% 30 h 0.6% 46 h 0.9% 30 h 0.6% 26 h 0.5% 28 h 0.5% 22 h 0.4% 14 h 0.3% 9 h 0.2%
Total beam integral 247 Ah 1030 Ah 1567 Ah 1845 Ah 2129 Ah 1775 Ah 2345 Ah 2448 Ah 2460 Ah 2349 Ah
Availability no data 94% 94.2% 96.3% 98.4% 95.4% 97.4% 95.8% 98.7% 95.9%
Availability after Compensation   (94%) (94.2%) 99.7% 101.6% 98.2% 100.1% 98.5% 101.6% 100.3%
MTBF no data 30 h 46 h 60 h 74.1 h 61.4 h 54.7 h 66.2 h 73.6 h 68.3 h
MTTR no data 1.7 h 2.7 h 2.2 h 1.2 h 2.8 h 1.5 h 2.8 h 1.0 h 2.8 h
MTBD no data no data no data no data no data no data 20 h 26 h 28 h 35 h