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Technical integration and coordination SASE1 Status and SASE3 Readiness
  Technical integration and coordination logbook, Contact: A. Violante, G. Wellenreuther  Not logged in ELOG logo
Message ID: 568     Entry time: 25 Nov 2024, 10:02
Author: Frederik Wolff-Fabris 
Location: General 
Severity: Information 
Subject: Notes XO Integration Meeting 25.11.2024 
General Announcement:
- Martin Doering announces on the upcoming Winter Maintenance period: 
1. Summary Task list was released last Friday 22.11; 
2. A total of 10 working days is predicted for the WMP; 
3. Dates for availability of Karabo, timing, DAQ, online storage were shown (selected period from Dec. 11 to Dec.18th); 
4. Cooling water and technical gases maintenance (Dec.11th-20th); 
5. Electricity: localized task in SA3 SCS exp. Hutch with installation of new emergency OFF button on January 15th: power will go OFF; Interlock tests light in all SASE hutches on January 15th; 
6. In case of questions please contact xo-planning@xfel.eu

- As PRC, Jan G. mentions a full report for the weekend events is available at the Operations e-log: 
1. events on Saturday limited SA1 and SA3 to a max of 30 bunches combined; caused by communication failure by the EPS - partially solved on Saturday but happened again on Sunday afternoon. 
EPS loop was solved by replacing a communication terminal; The MOV loop relates to a terminal seemed to be burned (redundancy was working) – this needs to be worked on Tuesday's ZZ. 
Limitation of 30 bunches came as communication was lost. Recovered after the work on Saturday and Sunday.
2. Broken bridges Karabo-Doocs went down on Friday evening: not caused a beam downtime but photon devices could not be seen at DOOCS. 
A Desy CPU at the injector building failed and Tim Wilksen intervene to restore the bridge and will follow-up.
3. SRA slits and Filter are locked now until the ZZ on Tuesday or the WMP.  

CTRL:
- Nothing to report.

DA:
- Nothing to report.

EEE:
- Issues in XTD2 (Sat and Sun) with PLCs and MOV loops: element had to be replaced to get back EPS on Sunday; Investigation for the cause are still ongoing.
- A new ZZ has to be done on Tuesday still related to the weekend events.

VAC:
- OCD involved on weekend activities to reset some EPS signals and ZZ.

XPD:
- Damaged YAG in SA1 XTD2 FEL imager was found during the weekend, to be worked in WMP.

DET:
- Nothing to report.

ITDM: 
- Nothing to report.

XRO:
- Apart of the SRA issue reported in SA1, nothing else to report.

LAS:
- Not present.

UNSYS:
- Nothing to report.

SPB:
- Issue with detector motion limit switches; EEE will investigate.
- J. Gruenert says a downtime of 40mins happened due to a broken radiation interlock in SPB/SFX bringing down the machine. SPB/SFX will investigate the cause.

FXE:
- Thanks to OCD colleagues for the help during the weekend to restore full beam permission.
- Issues with gain acquisition with LPD happened and a ticket was created. Expert investigation is needed by EEE and DAQ.

MID:
- Nothing to report.

HED:
- Nothing to report.

SCS:
- Nothing to report.

SQS:
- Nothing to report.

SXP:
- Nothing to report.
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