gitea-pages/docs/machine/statistics.md

title, description, template, hide

title	description	template	hide
SLS Operation Statistics	Weekly and anual operation statistics for the SLS are given here	main.html	toc

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	%
Total beam time	5976	68.2
User operation	960	11.0
Reserve time	48	0.5
Beamline development	1824	20.8
Machine development	3192	36.4
Shutdown	2784	31.8
Total	8760	100.0