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| SLS Operation Statistics |
Weekly and anual operation statistics for the SLS are given here |
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Infos
Here an overview of the used definitions 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
- Number-of-distortions: Incidence count of faults and beam drops (Ibeam < 390 mA), 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-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
More information is available in Phys. Rev. Accel. Beams 19, 082802 and here.
2025
DUO Schedule
| Time |
Hours |
% |
| Scheduled-user-time |
912 |
10.5 |
| Reserve-time |
48 |
0.5 |
| User operation |
960 |
11.0 |
| Time |
Hours |
% |
| User operation |
960 |
11.0 |
| Beamline development |
1824 |
20.8 |
| Machine development |
3192 |
36.4 |
| Total beam time |
5976 |
68.2 |
| Time |
Hours |
% |
| Total beam time |
5976 |
68.2 |
| Shutdown |
2784 |
31.8 |
| Total |
8760 |
100.0 |
Delivery for total beam time
|
|
| Average beam current |
299 mA |
| Circulating beam dose |
1590 Ah |
| Injected charge |
659.3 μC |
| Quarterly Beam Dose for Dosimetry {_1} |
|
| Q1 (11.12.2024-19.03.2025) |
22.4 Ah |
| Q2 (19.03.2025-18.06.2025) |
450.1 Ah |
| Q3 (18.06.2025-17.09.2025) |
499.7 Ah |
| Q4 (17.09.2025-10.12.2025) |
512.5 Ah |
Delivery for user operation
|
|
| User operation |
960 hours |
| Total downtime |
54.1 hours |
| Number-of-faults |
49 |
| Availability |
94.4 % |
| Availability after compensation |
99.3 % |
| MTBF |
18.1 hours |
| MTTR |
1.1 hours |
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