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COMMENT ON C100 stub tuning

Recent Log Entries -

Log Number: 4153689Logbook(s): Body: 

4K and at least 40% liquid should be just fine for adjusting Qext. There will be excessive microphonics that will make the BW measurements noisier if the shields are at 100 K rather than their nominal 40K.


Recent Log Entries -

Log Number: 4153676Logbook(s): Body: 

Resubmitting for approval. Plan is to start measuring and adjusting Qext as needed to reach target of 1.5e7 on C100 zones. Qext measurements would start on NL as soon as Helium and shield temperatures allows it. As suggested by J. Benesch we need to determine if 4K Helium temperatures is a suitable temperature to work the Qext adjustments. We do have 1L23 as reference since we did stub tunning work while @ 2K last SAD. We can start measuring Qext there and decide how to proceed.

iocsoftvac1 restored

Recent Log Entries -

Log Number: 4153673Logbook(s): Tags: Body: restorelib 2.6 Target restore date was 2023-03-24 16:49:10 The output from the myRestore execution was as follows: iocsoftvac1 systemEnum@2023-03-24 16:49 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -s -i iocsoftvac1 (success) Procedure return status: Success

harp gasket leak fix

Recent Log Entries -

Log Number: 4153631Logbook(s): Entry Makers: marcyBody: 

Harp installed on Wednesday. Found a leak yesterday in the gasket.

vented and removed harp to replace gasket today. During replacement, gasket slipped and broke harp wire.

Re-strung harp with wire from Tony.

Checked for shorts on insertion and retraction - seems ok, but manual retraction was causing the fork to vibrate and there was a tiny intermittent short - we'll have to verify that there are no shorts during normal operation with the controller.

Repaired harp reinstalled, tightened gasket, pumping down.

PSS Firmware Updates Progress

Recent Log Entries -

Log Number: 4153629Logbook(s): Body: 

All MCC work is completed for now, pending completion of installation works in the field.
We have completed all maintenance on the following segments/systems.
* Injector
* North Linac
* Hall A
* Hall B
* Hall C (System B)
* EPICS Firewall


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