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Message ID: 44     Entry time: 09 Apr 2025, 09:41
Author: Jan Gruenert 
Group: PRC 
Subject: Issue 

SASE1 XTD2 attenuator arm issue

On monday 7.4.2025, one of the SASE1 attenuator arms (SA1_XTD2_ATT/PNACT/A9) with a 2mm Silicon attenuator got stuck when inserted
EEE reports in the XO meeting today that DOC / EEE helped to unblock and remove it from the beam
(from the karabo-history, I assume this was on monday between 10h00 and 10h30).
This arm A9 is now blocked/disabled with the attenuator out of beam to prevent this to happen again until this issue is fixed.
To fix the issue for good and to re-enable operation of arm A9, an access to the tunnel XTD2 would be needed.
The group in charge of this beamline component is XRO. So far there is no access request.
CTRL (Wajid) reminds that also the karabo device needs to be blocked / unblocked.

This week, SPB/SFX receive SASE1 beam.
SPB/SFX (Chan Kim and Tomas Popelar) confirm that they can work this week without this attenuator arm,
in particular because they have their own attenuators and will not use the XTD2 attenuators.
Thus, for operations it seems that this access could wait at least until next week tuesday.

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