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Autolog save

9 hours 40 minutes ago
Log Number: 4509554Logbook(s): Tags: Body: saver ran from opsl02

Saved: bruker 06-08-26 15:06:05 {A:i B:1 C:3 E:850 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. A B C dump(s) in. Autosave prior to restore.
bruker

Mott measurements with D laser and VWien

9 hours 48 minutes ago
Log Number: 4509552Logbook(s): Entry Makers: brukerBody: 

Polarization measurement with D laser and opportunistic VWien calibration for 140 kV gun voltage. Scroll all the way down for the final result.

All runs with 2 patterns of helicity delay.

Run #10176: no beam, no events, good

Run #10177: 2 uA, Wiens at 0, IHWP IN, 300k events @ 2.7 kHz
Figure 1: E fits. Right detector showing greater peak width and fewer counts than the rest.

bruker

Summary of QE Anisotropy Measurements

9 hours 54 minutes ago
Log Number: 4509547Logbook(s): Body: 

Date of Measurement: Friday, June 05, 2026

Associated Log Numbers: 4508732, 4508733, 4508734, 4508735, 4508741, 4508743, 4508746, 4508747, 4508748, 4508749, 4508750, 4508751, 4508752, 4508755, 4508758 and 4508761

A reference QE measurement was performed the same day after anisotropy measurements. Spot Location: (13000.1, 18350.4), Charge: 1.76433. The measured QE for the Hall A laser at that time was 0.4690% (see Lognumber 4508758).

kachwala

Follow-up Re: 2L24 and 2L2L25 observations

10 hours 6 minutes ago
Log Number: 4509541Logbook(s): Body: 

looks like this noise is most likely coming from drive chain in cavity 6 and not from downstairs. We inspected the cables upstairs and couldn't find anything. The chassis readback was looking fine in the loopback mode, which may rule out the chassis. We will inspect the drive cable and preamplifier tomorrow

bachiman

1L09-2 pulse processed

10 hours 15 minutes ago
Log Number: 4509536Logbook(s): Entry Makers: michaelmBody: 

Nominal setting 12 MV/m. Pulse processed up to 19 MV/m (quench limited) with 20-30 ms on/1 s off pulse structure. Beamline decarad rate reduce from 10k counts > 3800 counts (~60% improvement).

michaelm

Mott setup

11 hours 2 minutes ago
Log Number: 4509511Logbook(s): Entry Makers: brukerBody: 

Setting up according to log #4473570.
Figure 1: Mott ladder IOC seems to have forgotten the saved positions. Re-saved them. The stage seems to still be homed.
0L03 and 0L04 off.
IBC0L02 B-chain pre-gain 2 was set to 36, setting it to 0 for now (avoid clipping). Now, 3 uA gives 25000 counts. Set trip limit to that, unmasked FSD bit, tested trip.

The setup I inherited has HWien = VWien = 0 and MFG1I04 = +/- 85.81.

bruker

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