19 KiB
title, description, template, hide
| title | description | template | hide | |
|---|---|---|---|---|
| SLS User Operation Statistics | User operation statistics for the SLS are given here | main.html |
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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).
??? info "Root cause options" The following accelerator subsystems can be identified as root cause for a fault. They usually correspond to a responsible expert group and main expert.
| System | Responsible PSI Entity | Contact |
|:---------------|:-----------------------------------------------|:-------------------------------------------------------|
| Beamlines | CPS | {{Frithjof}} |
| BPMs/Feedbacks | Beschleuniger Feedbacks und Messsysteme (8231) | {{Boris}} |
| Cooling | Prozesskühlung (9360) | {{Björn}} |
| Controls | Kontrollsysteme (8210) | {{Renata}} |
| Cryo | Kryo- und Gassysteme (9372) | {{Christian}} |
| Diagnostics | e-Instrumentierung (8123) | {{Cigdem}} |
| Frontends | Photonik Instrumentierung (6318) | {{David}} |
| Human Error | | |
| IDs | Insertion Devices (6319) | {{Marco}} |
| Kickers | Injektionssysteme (8416) | {{Martin}} |
| Magnets | Magnete (8430) | {{Carolin}} |
| Mains | Elektroversorgung (9340) | {{Wilhelm}} |
| Safety Systems | SPS-Systeme (9371) | {{Tony}} |
| Power Supplies | Leistungselektronik Engineering (8422) | {{MartinBa}} |
| RF | HF Systeme 1 (8413) | {{Lukas}} |
| Unknown | | |
| Vacuum | Vakuum (8440) | {{Natalia}} |
2026
??? info "Downtimes" | | Elog Timestamp | Duration | Post Mortem Elog Link | BDC Trigger | Risk | Root Cause | Details | |---:|:--------------------|:-----------|:-----------------------------------------------------------------------|:--------------|:----------|:---------------|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | 0 | Fri 28-Aug-26 09:45 | 2.46 hours | https://elog-gfa.psi.ch/SLS/65557 | Dump Kicker | Safe | Mains | Power glitch --> Water Cooling Failure --> RF and water cooled magnets down | | 1 | Fri 28-Aug-26 21:01 | 0.30 hours | https://elog-gfa.psi.ch/SLS/65571 | VCS | Safe | Vacuum | ARS07-VMMG-0020:RELAY3-PRESSURE = ARS07-VMCC-0130 peakt to 3e-7 from 2e-10mbar | | 2 | Mon 31-Aug-26 11:25 | 1.37 hours | https://elog-gfa.psi.ch/SLS/65591 | MIS | Safe | Safety Systems | MIS: Failure of Drawer in Tunnel, possibly temperature too high | | 3 | Wed 02-Sep-26 17:51 | 0.25 hours | https://elog-gfa.psi.ch/SLS/65646 | MIS | Safe | Beamlines | MIS-FE: X12SA Fastfalve - explosion of window due to radiation damage | | 4 | Fri 04-Sep-26 04:10 | 0.26 hours | https://elog-gfa.psi.ch/SLS/65661 | VCS | Safe | Vacuum | VCS: ARS10-VMMG-2010:RELAY5-PRESSURE = X10DA-FE-VMCC-0000 peak to 6e-6 from 4e-9mbar | | 5 | Sun 06-Sep-26 05:53 | 0.29 hours | https://elog-gfa.psi.ch/SLS/65681 | MIS | Safe | Beamlines | MIS-FE: X12SA Fastvalve - explosion of window due to radiation damage | | 6 | Thu 10-Sep-26 14:48 | 0.32 hours | https://elog-gfa.psi.ch/SLS/65743 | MIS | Safe | Beamlines | MIS-FE: X07DB Fastvalve - X07DB-FE-PUM2-VMCC-2020:PRESSURE peak of 2e-6 from 1e-8 mbar, reason unknown | | 7 | Fri 18-Sep-26 03:52 | 0.33 hours | https://elog-gfa.psi.ch/SLS/65839 | LLRF SR1 | Critical! | Kickers | Spontaneous self-triggering of kicker 3 | | 8 | Sat 19-Sep-26 01:05 | 0.34 hours | https://elog-gfa.psi.ch/SLS/65850 | LLRF SR1-4 | Critical! | Controls | Red-Pitaya-Reboot thus Not-firing of kicker 2 | | 9 | Sat 19-Sep-26 14:13 | 0.30 hours | https://elog-gfa.psi.ch/SLS/65855 | MIS | Safe | Magnets | ARS07-MQUA-1370:TEMP-QA-COIL-1 sensor defect | | 10 | Sun 20-Sep-26 06:52 | 0.31 hours | https://elog-gfa.psi.ch/SLS/65872 | LLRF SR1 | Safe | Unknown | instability, beam partially lost before dump | | 11 | Thu 24-Sep-26 14:00 | 1.17 hours | https://elog-gfa.psi.ch/SLS/65928 | MIS | Safe | Cooling | MIS-FE: X05DA Probleme Durchflusswächter Frontend | | 12 | Sun 27-Sep-26 18:52 | 0.30 hours | https://elog-gfa.psi.ch/SLS/65968 | LLRF SR3 | Safe | Unknown | | | 13 | Thu 01-Oct-26 07:04 | 1.15 hours | https://elog-gfa.psi.ch/SLS/66003 | LLRF SR1 | Safe | Unknown | | | 14 | Sat 03-Oct-26 11:02 | 2.22 hours | https://elog-gfa.psi.ch/SLS/66019 | LLRF SR3 | Safe | Unknown | | | 15 | Sun 04-Oct-26 14:48 | 0.26 hours | https://elog-gfa.psi.ch/SLS/66031 | LLRF SR1 | Critical! | Kickers | Spontaneous self-triggering of K4 elog | | 16 | Thu 08-Oct-26 11:29 | 0.28 hours | https://elog-gfa.psi.ch/SLS/66084 | VCS | Safe | Vacuum | ARS10-VMMG-2010:RELAY5-PRESSURE = X10DA-FE-VMCC-0000 peak to 7e-7 from 4e-9 mbar, vacuum valve X10DA-FE-VVPG-0000 briefly closed and opened elog | | 17 | Sat 10-Oct-26 08:49 | 1.72 hours | https://elog-gfa.psi.ch/SLS/66098 | Orbit | Safe | Human Error | ARS07-DBPM3 Error: Rack T049.99.22 tot, stecker lose, Arbeiten leider ohne Deaktivierung des Beam Dumps | | 18 | Sun 11-Oct-26 10:36 | 0.28 hours | https://elog-gfa.psi.ch/SLS/66111 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 elog | | 19 | Sun 11-Oct-26 17:28 | 0.27 hours | https://elog-gfa.psi.ch/SLS/66114 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 elog | | 20 | Fri 16-Oct-26 02:33 | 0.27 hours | https://elog-gfa.psi.ch/SLS/66176 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 elog | | 21 | Fri 16-Oct-26 12:08 | 0.28 hours | https://elog-gfa.psi.ch/SLS/66180 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 | | 22 | Fri 16-Oct-26 14:51 | 0.31 hours | https://elog-gfa.psi.ch/SLS/66184 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 | | 23 | Fri 16-Oct-26 18:17 | 0.28 hours | https://elog-gfa.psi.ch/SLS/66186 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 | | 24 | Fri 16-Oct-26 19:58 | 0.27 hours | https://elog-gfa.psi.ch/SLS/66190 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 | | 25 | Sat 17-Oct-26 04:21 | 0.31 hours | https://elog-gfa.psi.ch/SLS/66195 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 | | 26 | Sat 17-Oct-26 12:43 | 0.28 hours | https://elog-gfa.psi.ch/SLS/66199 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 | | 27 | Sun 18-Oct-26 21:01 | 0.95 hours | https://elog-gfa.psi.ch/SLS/66209 | VCS | Safe | Frontends | ARS06-VMMG-2010:RELAY5-PRESSURE = X06DA-FE-VMCC-0000 | | 28 | Wed 21-Oct-26 18:41 | 3.66 hours | https://elog-gfa.psi.ch/SLS/66258 | MIS | Safe | Safety Systems | MIS BOX RING ARC 2.1 -> WSLA.R023.99.02 | | 29 | Fri 23-Oct-26 01:49 | 0.28 hours | https://elog-gfa.psi.ch/SLS/66275 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 | | 30 | Fri 23-Oct-26 03:34 | 0.28 hours | https://elog-gfa.psi.ch/SLS/66276 | VCS | Safe | Frontends | ARS02-VMMG-2010:RELAY1-PRESSURE = X02SA-FE-VMCC-0000 | | 31 | Fri 23-Oct-26 22:27 | 0.28 hours | https://elog-gfa.psi.ch/SLS/66291 | VCS | Safe | Vacuum | ARS11-VMMG-0020:RELAY3-PRESSURE = ARS11-VMCC-0510 | | 32 | Sat 24-Oct-26 16:07 | 0.29 hours | https://elog-gfa.psi.ch/SLS/66298 | LLRF SR2 | Safe | Unknown | |
??? info "Beamdrops" | | Elog Timestamp | Duration | Elog Link | Root Cause | Details | |---:|:--------------------|:-----------|:-----------------------------------------------------------------------|:---------------|:----------------------------------------------------------------------------------------------| | 0 | Thu 17-Sep-26 09:50 | 1.68 hours | https://elog-gfa.psi.ch/SLS/65836 | Power Supply | ABOMA-CBF Set to zero (https://elog-gfa.psi.ch/SLS/65834) due to HW issue with the controller | | 1 | Mon 28-Sep-26 10:40 | 0.09 hours | https://elog-gfa.psi.ch/SLS/65972 | Human Error | Superconducting superbend preparation work | | 2 | Fri 23-Oct-26 07:53 | 0.13 hours | https://elog-gfa.psi.ch/SLS/66281 | BPMs/Feedbacks | BPM / FOFB issue |
2025
