Shift Log 2012024
LN LC AA SB
17:00
Let the cavity Compton group continue after their half shift as they had some problems with their software earlier.
Plan: have Alex/Pavel optics, and some optics by Okugi-san to test for:
- small beam size at LWIP (OTR measurement)
- background levels in detector
- response to skew tuning (OTR)
Can then use best optics for data taking in LW double shift later this week.
17:45 Start
Save settings: atf/data/set_data/set12apr24_1747.dat
Start trying Okugi-san's beta y* = 0.05 optics. Magnet changes:
- for all of these sets: QM11FF: -37.804, QM12FF: -35.481, QM13FF: -10.207
- beta y* = 0.05: QM14FF: -27.551, QM15FF: -36.238, QM16FF: 28.167, QF21X: 90.160.
Orbit tuning. Manipulator 6000, CV: 500, CH: 500.
18:20
Finding beam on OTR. Manipulator 6000, CH:500, CV: 500. Post IP OTR switched in.
Taking OTR shots of all optics sets:
| beta y* |
QF21X |
QM16FF |
QM15FF |
QM14FF |
| 0.01 |
88.736 |
27.722 |
-25.464 |
-59.179 |
| 0.02 |
90.591 |
28.302 |
-31.613 |
-45.495 |
| 0.03 |
90.704 |
28.337 |
-33.986 |
-37.592 |
| 0.04 |
90.486 |
28.269 |
-35.338 |
-31.960 |
| 0.05 |
90.160 |
28.167 |
-36.238 |
-27.551 |
| 0.06 |
89.792 |
28.052 |
-36.890 |
-23.902 |
| 0.07 |
89.404 |
27.931 |
-37.387 |
-20.767 |
| 0.08 |
89.007 |
27.807 |
-37.781 |
-18.001 |
| 0.09 |
88.603 |
27.681 |
-38.100 |
-15.510 |
| 0.10 |
88.195 |
27.553 |
-38.364 |
-13.227 |
Smallest σy ~ 2.2um at beta y* = 0.1, σx ~ 400um at this point.
20:00
Quad scan to see if this size and the large background (wire scanner detector saturated) can be reduced.
QM14FF scanned. No improvement in beam size or background.
20:30
Returned to Alex/Pavel optics and tuning for background. After tuning background ~ 4000 counts with 10dB attenuation.
Check beam size with OTR - decrease beam size with QM14FF. Apparent minimum at -78.73. Scan in 2.5A steps from -88.73 to -68.73. Fitted parabola minimum at -79.980A, σy = 2um.
Set file: setdata12apr24_2157.dat.
Polariser scan from -18 to 22 degrees. Min beam size σy = 1.59um, polariser angle 12.15 degrees.
23:00
Skew scan and log files.
| QK4X |
log file |
| 2.61 |
20120424_2253_log.dat |
| 0 |
20120424_2256_log.dat |
| -5 |
20120424_2258_log.dat |
| -10 |
20120424_2300_log.dat |
| -15 |
20120424_2302_log.dat |
| -19 |
20120424_2304_log.dat |
| 5 |
20120424_2306_log.dat |
| 10 |
20120424_2308_log.dat |
| 15 |
20120424_2310_log.dat |
| 19 |
20120424_2311_log.dat |
23:25
Delta f ramp
| Delta f |
log file |
| + 1kHz |
20120424_2319_log.dat |
| + 2kHz |
20120424_2320_log.dat |
| + 3kHz |
20120424_2322_log.dat |
| + 0kHz |
20120424_2324_log.dat |
| - 1kHz |
20120424_2325_log.dat |
| - 2kHz |
20120424_2326_log.dat |
| - 3kHz |
20120424_2327_log.dat |
set file: set12apr24_2334.dat
23:50
Delta f ramp with OTR images
Background log (no ramp on): 20120424_2345_log.dat
| Delta f |
log file |
| + 1kHz |
20120424_2350_log.dat |
| + 2kHz |
20120424_2352_log.dat |
| + 3kHz |
20120424_2354_log.dat |
| + 0kHz |
20120424_2348_log.dat |
| - 1kHz |
20120424_2355_log.dat |
| - 2kHz |
20120424_2357_log.dat |
| - 3kHz |
20120424_2359_log.dat |
500 pulse background log: 20120425_0003_log.dat
SB calibrated MFB2FF but may still be dodgy
- QS1X and QS2X are both -0.595A
| Delta f |
log file |
| -3kHz |
20120424_0048_log.dat |
| -2kHz |
20120424_0049_log.dat |
| -1kHz |
20120424_0051_log.dat |
| 0kHz |
20120424_0052_log.dat |
| 1kHz |
20120424_0053_log.dat |
| 2kHz |
20120424_0054_log.dat |
| 3kHz |
20120424_0056_log.dat |
- QS1X and QS2X set to -0.495A
| Delta f |
log file |
| -3kHz |
20120424_0058_log.dat |
| -2kHz |
20120424_0100_log.dat |
| -1kHz |
20120424_0101_log.dat |
| 0kHz |
20120424_0102_log.dat |
| 1kHz |
20120424_0104_log.dat |
| 2kHz |
20120424_0105_log.dat |
| 3kHz |
20120424_0106_log.dat |
- QS1X and QS2X set to -0.395A
| Delta f |
log file |
| -3kHz |
20120424_0107_log.dat |
| -2kHz |
20120424_0109_log.dat |
| -1kHz |
20120424_0110_log.dat |
| 0kHz |
20120424_0111_log.dat |
| 1kHz |
20120424_0112_log.dat |
| 2kHz |
20120424_0113_log.dat |
| 3kHz |
20120424_0114_log.dat |
- QS1X and QS2X set to -0.695A
| Delta f |
log file |
| -3kHz |
20120424_0117_log.dat |
| -2kHz |
20120424_0118_log.dat |
| -1kHz |
20120424_0119_log.dat |
| 0kHz |
20120424_0120_log.dat |
| 1kHz |
20120424_0121_log.dat |
| 2kHz |
20120424_0122_log.dat |
| 3kHz |
20120424_0123_log.dat |
* QS1X and QS2X set to -0.795A
| Delta f |
log file |
| -3kHz |
20120424_0125_log.dat |
| -2kHz |
20120424_0126_log.dat |
| -1kHz |
20120424_0127_log.dat |
| 0kHz |
20120424_0128_log.dat |
| 1kHz |
20120424_0130_log.dat |
| 2kHz |
20120424_0132_log.dat |
| 3kHz |
20120424_0134_log.dat |
- Magnet Movers at Start:
- Magnet Values at the start:
PP/JAI Web>LaserWire>Atf2Laserwire>Atf2LwLogBook>Atf2LwLogBook20120424Shift (24 Apr 2012, LaurieNevay)
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