# Difference between revisions of "Gembeam log first"

RUN # Source/Cosmic/Pedestal Date Start Time End Time HV # of events notes
531 Pedestal Apr 21 2011 3.850V Good pedestal run : ADC vs. chan number , Mean vs. chan number ,RMS vs. chan number
532 Cosmics Apr 21 2011 3.850V Try cosmic with only one paddle. Not successful
533 Cosmics Apr 21 2011 14:38 15:30 3.850V 1103 Make coincidence between small paddle and bottom half of "E" plane, Raised the voltage on the scintillator paddle to 2.15V during run to increase rate.
```Gem1 hits with good x and y = 52 good x1 = 59 Good y1 = 92
Gem2 hits with good x and y = 47 good x2 = 49 Good y2 = 118
Gem3 hits with good x and y = 99 good x3 = 111 Good y3 = 192
```
534 Cosmics Apr 21 2011 15:31 16:20 3.850V 12356 Before run start increase gas flow from 0.2 to 0.4 at flowmeter
```Gem1 hits with good x and y = 102 good x1 = 110 Good y1 = 141
Gem2 hits with good x and y = 46 good x2 = 49 Good y2 = 122
Gem3 hits with good x and y = 92 good x3 = 102 Good y3 = 166
```
535 Beam Apr 22 2011 11:21 12:03 3.850V 52111 Start run before beam and took about 1100 events with no beam. Took data at 1uA with He target. 1D plots of ADC for each GEM plane, Size for each GEM plane, Position for each GEM plane (red is a hit with other plane in chamber) . 2d Plots of Y vx X position for each GEM , Y vx X size for each GEM , Y vx X adc for each GEM , ADC vs size for each GEM plane
```Gem1 hits with good x and y = 7620 good x1 = 8342 Good y1 = 11666
Gem2 hits with good x and y = 5454 good x2 = 6189 Good y2 = 10321
Gem3 hits with good x and y = 2616 good x3 = 2945 Good y3 = 6287
Hit in all planes = 1580
Good x2 and y2 = 5454 with good x1 = 4136 eff = 0.758343
Good x2 and y2 = 5454 with good y1 = 4390 eff = 0.804914
Good x3 and y3 = 2616 with good x1 = 2023 eff = 0.773318
Good x3 and y3 = 2616 with good y1 = 2084 eff = 0.796636
Good x1 and y1 = 7620 with good x2 = 4268 eff = 0.560105
Good x1 and y1 = 7620 with good y2 = 5526 eff = 0.725197
Good x3 and y3 = 2616 with good x2 = 1966 eff = 0.751529
Good x3 and y3 = 2616 with good y2 = 2159 eff = 0.825306
Good x1 and y1 = 7620 with good x3 = 2139 eff = 0.280709
Good x1 and y1 = 7620 with good y3 = 3473 eff = 0.455774
Good x2 and y2 = 5454 with good x3 = 1988 eff = 0.364503
Good x2 and y2 = 5454 with good y3 = 2933 eff = 0.53777
```
535 (A) Tracking and Space Resolution analysis for run 535 Apr 28 2011 3.850V 52111 Start run before beam and took about 1100 events with no beam. Took data at 1uA with He target. Differences for each GEM plane, 2D plot: Differences vs. Position for each GEM plane, Fitted track's z-x plane & z-y plane projections of the last event , Distribution of slopes of track projections
```Difference is such a quantity: When we make a projection of a track to the x-z or
y-z plane, (given that the z coordinates have been fixed when we were building the
GEM detectors, our software only looks for the x and y postion), we will get three
points on the x-z (y-z) plane, then we make a line through two points among the
three points and predict the third point's position according to the line, we record
the value difference between the pridiction and the projection values,
that is a difference.
```
Apr 26 2011 April 26th entered hall. Found HV to GEM 1 has tripped off. Could not figure out a quick fix. Took GEM off stack and had RADCON survey.
Apr 26 2011 Install 2nd scintillator in front of GEMs. Setup coincidence.
540 Pedestal Apr 26 2011 15:57:31 15:57:57 3.820V 3158 Only GEM2 and 3 installed
541 5 micro Ampere BeO no raster Apr 26 2011 16:00:31 16:33:57 3.820V 25000 Only GEM2 and 3 installed. 1D plots of ADC for each GEM plane (red is X planes is for X > 3cm), Size for each GEM plane, Position for each GEM plane (red is a hit with other plane in chamber) . 2d Plots of Y vx X position for each GEM , Y vx X size for each GEM , Y vx X adc for each GEM , ADC vs size for each GEM plane
542 5 micro Ampere BeO no raster Apr 26 2011 16:45:13 16:49:52 3.820V 19000 Only GEM2 and 3 installed. 1D plots of ADC for each GEM plane (red is X planes is for X > 3cm), Size for each GEM plane, Position for each GEM plane (red is a hit with other plane in chamber) . 2d Plots of Y vx X position for each GEM , Y vx X size for each GEM , Y vx X adc for each GEM , ADC vs size for each GEM plane
543 5 micro Ampere BeO no raster Apr 26 2011 16:55:13 17:09:52 3.820V 7153 Only GEM2 and 3 installed. 1D plots of ADC for each GEM plane(red is X planes is for X > 3cm) , Size for each GEM plane, Position for each GEM plane (red is a hit with other plane in chamber) . 2d Plots of Y vx X position for each GEM , Y vx X size for each GEM , Y vx X adc for each GEM , ADC vs size for each GEM plane
```Event=7150
Gem1 hits with good x and y = 0 good x1 = 0 Good y1 = 0
Gem2 hits with good x and y = 3370 good x2 = 3632 Good y2 = 3796
Gem3 hits with good x and y = 2245 good x3 = 2496 Good y3 = 2879
Hit in all planes = 1845
Good x3 and y3 = 2245 with good x2 = 1972 eff = 0.878396
Good x3 and y3 = 2245 with good y2 = 1946 eff = 0.866815
Good x2 and y2 = 3370 with good x3 = 2010 eff = 0.596439
Good x2 and y2 = 3370 with good y3 = 2307 eff = 0.68457
```
544 29 micro Ampere BeO with raster Apr 26 2011 17:10:39 17:22:41 3.820V 213521 Only GEM2 and 3 installed. 1D plots of ADC for each GEM plane (red is X planes is for X > 3cm), Size for each GEM plane, Position for each GEM plane (red is a hit with other plane in chamber) . 2d Plots of Y vx X position for each GEM , Y vx X size for each GEM , Y vx X adc for each GEM , ADC vs size for each GEM plane
```the number of events is 147537
Event=147537
Gem1 hits with good x and y = 0 good x1 = 0 Good y1 = 0
Gem2 hits with good x and y = 76517 good x2 = 80520 Good y2 = 95701
Gem3 hits with good x and y = 44507 good x3 = 48416 Good y3 = 62654
Hit in all planes = 32332
Good x3 and y3 = 44507 with good x2 = 33624 eff = 0.755477
Good x3 and y3 = 44507 with good y2 = 36382 eff = 0.817444
Good x2 and y2 = 76517 with good x3 = 34691 eff = 0.453376
Good x2 and y2 = 76517 with good y3 = 43013 eff = 0.562137
```
545 118 micro Ampere BeO with raster Apr 26 2011 18:25:43 18:29:12 3.820V 75870 Only GEM2 and 3 installed. 1D plots of ADC for each GEM plane (red is X planes is for X > 3cm), Size for each GEM plane, Position for each GEM plane (red is a hit with other plane in chamber) . 2d Plots of Y vx X position for each GEM , Y vx X size for each GEM , Y vx X adc for each GEM , ADC vs size for each GEM plane
```the number of events is75867
Event=75867
Gem1 hits with good x and y = 0 good x1 = 0 Good y1 = 0
Gem2 hits with good x and y = 39263 good x2 = 41268 Good y2 = 49417
Gem3 hits with good x and y = 21421 good x3 = 23198 Good y3 = 31982
Hit in all planes = 15134
Good x3 and y3 = 21421 with good x2 = 15731 eff = 0.734373
Good x3 and y3 = 21421 with good y2 = 17148 eff = 0.800523
Good x2 and y2 = 39263 with good x3 = 16198 eff = 0.412551
Good x2 and y2 = 39263 with good y3 = 21285 eff = 0.542113
```
546 118 micro Ampere BeO with raster Apr 26 2011 18:40:54 18:55:20 3.820V 251658 Only GEM2 and 3 installed. 1D plots of ADC for each GEM plane (red is X planes is for X > 3cm), Size for each GEM plane, Position for each GEM plane (red is a hit with other plane in chamber) . 2d Plots of Y vx X position for each GEM , Y vx X size for each GEM , Y vx X adc for each GEM , ADC vs size for each GEM plane
```the number of events is 147538
Event=147538
Gem1 hits with good x and y = 0 good x1 = 0 Good y1 = 0
Gem2 hits with good x and y = 76550 good x2 = 80548 Good y2 = 95655
Gem3 hits with good x and y = 41942 good x3 = 45559 Good y3 = 62211
Hit in all planes = 30170
Good x3 and y3 = 41942 with good x2 = 31317 eff = 0.746674
Good x3 and y3 = 41942 with good y2 = 33991 eff = 0.810429
Good x2 and y2 = 76550 with good x3 = 32324 eff = 0.42226
Good x2 and y2 = 76550 with good y3 = 41990 eff = 0.54853
```
546 118 micro Ampere BeO with raster FULL REPLAY Apr. 28, 2011 6:26 Apr 26 2011 18:40:54 18:55:20 3.820V 251658 Only GEM2 and 3 installed. 1D plots of ADC for each GEM plane (red is X planes is for X > 3cm), Size for each GEM plane, Position for each GEM plane (red is a hit with other plane in chamber) . 2d Plots of Y vx X position for each GEM , Y vx X size for each GEM , Y vx X adc for each GEM , ADC vs size for each GEM plane

the number of events is251655

```Event=251655
Gem1 hits with good x and y = 0 good x1 = 0 Good y1 = 0
Gem2 hits with good x and y = 130472 good x2 = 137287 Good y2 = 163057
Gem3 hits with good x and y = 71806 good x3 = 78048 Good y3 = 106396
Hit in all planes = 51702
Good x3 and y3 = 71806 with good x2 = 53682 eff = 0.747598
Good x3 and y3 = 71806 with good y2 = 58156 eff = 0.809904
Good x2 and y2 = 130472 with good x3 = 55408 eff = 0.424673
Good x2 and y2 = 130472 with good y3 = 71876 eff = 0.550892
```
Apr 28th During controlled access lowered HV to 3775 HV ( read with DVM).