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COMMENT ON Test beam envelope management around Wiens with strong spin flipper

21 hours 58 minutes ago
Log Number: 4470756Logbook(s): Body: 

We seem to have established a reasonably quick process by which the optimal settings for focusing into the VWien and HWien can be found. Today's test showed the values for the compensated spin flipper are consistent between HWien set to 0, 60, and 90 degrees.
https://logbooks.jlab.org/entry/4470739

Steps for next time:
1. optimize again with uncompensated (flipping) spin flipper; also try combinations of VWien and HWien
2. transport high-current beam to FC1 with chopper on to demonstrate transmission

bruker

BSList #117047: HWien focusing at 0/90 degrees

23 hours 24 minutes ago
Log Number: 4470739Logbook(s): Entry Makers: brukerBody: 

Retracted A1.
Tested HWien = +90 degrees, works fine now that the limit has been removed.
Repeating MFG1I04 scan from #4468893, this time comparing HWien = 0 and HWien = 90 degrees. MFG1I04A = -MFG1I04B.
Figure 1: beam sizes on 0I02 viewer
Figure 2: relative deviation between the two HWien settings as defined previously. The minimum is now at 129 or 130 as opposed to 127 or 128 for HWien=60. The difference is probably small enough to ignore. Going forward, 130 may be a good choice.

Allsave #26645.
Pausing study to come back to QE scans to investigate shift in laser position.

bruker

Autolog save

23 hours 26 minutes ago
Log Number: 4470737Logbook(s): Tags: Body: saver ran from opsl01

Saved: bruker 02-13-26 13:28:29 {A:5 B:3 C:1 E:345 A=Tune B=BS C=BS D=BS 0R08=0.00 0R08 dump in.
bruker

SLinac/FEL SC1R Pumpdown Complete

23 hours 42 minutes ago
Log Number: 4470729Logbook(s): Entry Makers: johnwBody: 

SLinac/FEL SC1R Pumpdown is Complete. We had an issue with CHL1 C5 oil DP causing us to start SBR C2. No other issues encountered with the plant during the pumpdown. We will refill cryomodules to nominal levels.

cryo

COMMENT ON Post SAM FE onset measurements C75 and C100 cryomodules

1 day ago
Log Number: 4470727Logbook(s): Body: 

Moved DecaRad system from 1L07 to 1L05 to support post-plasma checks.
1L05 Readbacks via SRF DecaRad nl05b
__Drad Ch.__ /__Location__
DRADN05BSRF1 1L05 WG 1&2
DRADN05BSRF2 n/c
DRADN05BSRF3 1L05 WG 3&4
DRADN05BSRF4 n/c
DRADN05BSRF5 1L05 top cl
DRADN05BSRF6 1L05 WG 5&6
DRADN05BSRF7 1L05 WG 7&8
DRADN05BSRF8 n/c
DRADN05BSRF9 1L05 Supply (US) BL
DRADN05BSRF10 1L05 Return (DS) BL
DRADN05BHVMON
All 7 chs. were good ~11:00 on 13Feb2026. HV bias is off.
***** ******

Moved DecaRad system from 1L09 to 1L10 to support post-plasma checks.

king

iocsl26rffcc6 restored

1 day ago
Log Number: 4470726Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-02-13 11:55:45 The output from the myRestore execution was as follows: iocsl26rffcc6 Rf12Fcc_V2 Pause: 60 second(s) Execute: /cs/opshome/burt/REBOOT/Rf12Fcc/DLOAD_ICAL.csh iocsl26rffcc6 (success) c100_rffcc@2026-02-13 11:55 72(72) restored c100_ecal@2026-02-13 11:55 19(19) restored Execute: myRestore -execute -P c100_ecal -t R2Q6_ECAL -m BLDGNUM=2 ZONE=Q CAV=6 (success) c100_ecal@2025-01-18 09:02 19(19) restored Execute: burtwb -r 3 -f /cs/opshome/burt/REBOOT/Rf12Fcc/snap-kc/
alarms

iocnl26rffcc6 restored

1 day ago
Log Number: 4470725Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-02-13 11:55:01 The output from the myRestore execution was as follows: iocnl26rffcc6 Rf12Fcc_V2 Pause: 60 second(s) Execute: /cs/opshome/burt/REBOOT/Rf12Fcc/DLOAD_ICAL.csh iocnl26rffcc6 (success) c100_rffcc@2026-02-13 11:55 72(72) restored c100_ecal@2026-02-13 11:55 19(19) restored Execute: myRestore -execute -P c100_ecal -t R1Q6_ECAL -m BLDGNUM=1 ZONE=Q CAV=6 (success) c100_ecal@2025-09-11 14:11 19(19) restored Execute: burtwb -r 3 -f /cs/opshome/burt/REBOOT/Rf12Fcc/snap-kc/
alarms

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