Recent Log Entries

Past harp traces

Log Number: 3819247Logbook(s): Entry Makers: michaelmBody: 

Traces from shut down in March for reference...

beam convergence

Log Number: 3819241Logbook(s): Entry Makers: beneschBody: 

The shoulder on the first peak in each of the linked harp traces suggests scrapping. In *E matches upstream similar shoulders disappeared after steering or matching. If there are problems with FSD trips, these might be checked. Relaxing MQA5C04 again might help.

Given the way I'm accessing my office computer, I can't clip portions of screens so the figures are not the best.

Hall D ion chamber calibrations

Log Number: 3819236Logbook(s): Entry Makers: michaelmBody: 

Chamber calibrations complete 15-~500nA on the following targets:
Amorphous:
2e-5
1e-4
3e-4

Goniometer:
JD70-105 diamond (0/90 degree orientation)
4.5e-4 Al (in progress)

IHA3C05 Y-plane Emittance Measurement Analysis

Log Number: 3819235Logbook(s): Body: IHA3C05 Y-plane Emittance Measurement Analysis
qsUtility Data Analyzer Vpro
SDDS FILE: /cs/prohome/apps/q/qsUtility/pro/fileio/data/IHA3C05/IHA3C05_y_zigzag_2020-08-02_04:49:16/IHA3C05_zigzag_2020-08-02_04:49:16_qsUtility_analyzer.sdds
CED WORKSPACE: OPS CED LOGIN KEY: pro

IHA3C05 X-plane Emittance Measurement Analysis

Log Number: 3819229Logbook(s): Body: IHA3C05 X-plane Emittance Measurement Analysis
qsUtility Data Analyzer Vpro
SDDS FILE: /cs/prohome/apps/q/qsUtility/pro/fileio/data/IHA3C05/IHA3C05_x_zigzag_2020-08-02_04:18:35/IHA3C05_zigzag_2020-08-02_04:18:35_qsUtility_analyzer.sdds
CED WORKSPACE: OPS CED LOGIN KEY: pro

2H01 BPM readbacks near zero position

Log Number: 3819222Logbook(s): Entry Makers: anthonyBody: 

When beam position at 2H01 gets close to zero at 5nA, the sign will flip back and forth between + and -. This starts just below 0.9mm. The BPM cannot be made to read any closer to zero at 5nA. Raising current to 10nA enabled the BPM to work down to about 0.4mm before the same behavior came back. Hall B needs this BPM to work better at low beam currents.

Autolog save

Log Number: 3819212Logbook(s): Tags: Body: saver ran from opsl632

Saved: michaelm 08-02-20 03:48:21 {A:1 B:1 C:5 E:1050 A=BS B=CW C=BS D=CW 0R08=0.27 C dump(s) in.

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