Difference between revisions of "CDC q vs n"
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− | + | <h2>Run 11559</h2> cosmics, April 20, 2016 | |
− | Run 11559 cosmics April 20 | + | |
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
|[[Image:cdc_run11559_qn.png|thumb|x200px|MPV of Landau fitted to DCDCHit->q for each straw, low gain straws (from hvb I22) in red]] | |[[Image:cdc_run11559_qn.png|thumb|x200px|MPV of Landau fitted to DCDCHit->q for each straw, low gain straws (from hvb I22) in red]] | ||
Line 9: | Line 8: | ||
|[[Image:cdc_run11559_ampring1.png|thumb|x70px|amplitude, straws in ring 1]] | |[[Image:cdc_run11559_ampring1.png|thumb|x70px|amplitude, straws in ring 1]] | ||
|[[Image:cdc_run11559_ampring28.png|thumb|x70px|amplitude, straws in ring 28]] | |[[Image:cdc_run11559_ampring28.png|thumb|x70px|amplitude, straws in ring 28]] | ||
− | |[[Image:cdc_run11559_qring1.png|thumb|x70px|q, straws in ring 1]] | + | |[[Image:cdc_run11559_qring1.png|thumb|x70px|q, straws in ring 1]] |
|[[Image:cdc_run11559_qring28.png|thumb|x70px|q, straws in ring 28]] | |[[Image:cdc_run11559_qring28.png|thumb|x70px|q, straws in ring 28]] | ||
|} | |} | ||
*The slight upward trend in q vs n (straw number) can also be seen in the plots of amplitude and q for rings 1 and 28. | *The slight upward trend in q vs n (straw number) can also be seen in the plots of amplitude and q for rings 1 and 28. | ||
− | *The oscillations may be an artefact of the fitted Landau MPV moving with the data count in the histogram. | + | *The oscillations may be an artefact of the fitted Landau MPV moving with the data count in the histogram. ? What would cause this? |
*The troughs in the hit count correspond to troughs in the fitted MPV for q. ??? | *The troughs in the hit count correspond to troughs in the fitted MPV for q. ??? | ||
*The pedestal and amplitude vs n plots do not show huge oscillations, except in number of hits. | *The pedestal and amplitude vs n plots do not show huge oscillations, except in number of hits. | ||
Line 22: | Line 21: | ||
*Use track info - ignore untracked hits | *Use track info - ignore untracked hits | ||
*Pick cosmics out of beam data? | *Pick cosmics out of beam data? | ||
+ | *Beam data oscillations are more sawtooth than sine, why? Runs 11071-11383(?) have the cdc hole. | ||
*Look at drift times | *Look at drift times | ||
Line 35: | Line 35: | ||
− | Run 10496 | + | <h2>Run 10496</h2> |
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
|[[Image:cdc_run10496_qn.png|thumb|x175px|Run 10496 30nA beam on diamond Feb 24]] | |[[Image:cdc_run10496_qn.png|thumb|x175px|Run 10496 30nA beam on diamond Feb 24]] | ||
|} | |} | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_run10496tfit.png|thumb|x70px|drift time fit, max drift time 656ns]] | ||
+ | |} | ||
+ | |||
+ | |||
+ | <h2>Run 10777</h2> | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
|[[Image:cdc_run10777_qn.png|thumb|x260px|Run 10777 100nA beam on diamond Mar 6]] | |[[Image:cdc_run10777_qn.png|thumb|x260px|Run 10777 100nA beam on diamond Mar 6]] | ||
|} | |} | ||
+ | |||
+ | <h2>Run 11667</h2> | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
|[[Image:cdc_run11667_qn.png|thumb|x190px|Run 11667 112nA beam on diamond April 25 after increasing low-gain preamp LV]] | |[[Image:cdc_run11667_qn.png|thumb|x190px|Run 11667 112nA beam on diamond April 25 after increasing low-gain preamp LV]] | ||
+ | |} | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_run11667_qn_tracks.png|thumb|x190px|Hits on tracks only]] | ||
+ | |- | ||
+ | |[[Image:cdc_run11667_qn_tracks_z1.png|thumb|x190px|Zoom on inner rings]] | ||
+ | |- | ||
+ | |[[Image:cdc_run11667_qn_tracks_z2.png|thumb|x190px|Zoom on outer rings]] | ||
|} | |} | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_run11667tfit.png|thumb|x70px|drift time fit, max drift time 672ns]] | ||
+ | |} | ||
− | Low gain straws were n=3064 to 3070, 3270 to 3277, 3479 to | + | *Low gain straws were n=3064 to 3070, 3270 to 3277, 3479 to 3486. Preamp LV was increased on these before run 11577 [ https://logbooks.jlab.org/entry/3401572 ] |
+ | *Straw n=244 has half gain | ||
+ | *Unbowed straws at bottom of ring 24: n=2788, 2789; at bottom of ring 4: n=45; at top of ring 26: n= 2965, 2969 | ||
+ | |||
+ | |||
+ | <h2>Environment</h2> | ||
+ | |||
+ | |||
+ | |||
+ | {|border="1" cellpadding="5" cellspacing="0" style="text-align:center; " | ||
+ | |Run || date || beam (nA) ||max drift (ns) || VERY approx q(3522)|| pressure (bar) || temp U1 || temp U2 || temp U3 || temp U4 || temp D1 || temp D2 || temp D3 || temp D4 | ||
+ | |-style="background:#eeeeff;" | ||
+ | | 10496 || Feb 24 || 41 || 656 || 1350 || 99.71 || 23.3 ||23.2 || 23.6 || 24.1 ||25.4 ||25.5 ||24.8 ||25.2 | ||
+ | |- | ||
+ | | 10777 || Mar 6 || 100 || 665 || 1000 || 100.87 || 22.4 ||22.3 || 22.7 || 23.1 ||24.9 ||24.6 ||24.0 ||24.4 | ||
+ | |- | ||
+ | | 11559 || Apr 20 || cosmics || 663 || 1150 || 101.24 || 21.9 ||21.8 || 22.0 || 22.4 ||24.3 ||23.2 ||23.0 ||23.2 | ||
+ | |- | ||
+ | | 11667 || Apr 25 || 120 || 672 || 1200 || 100.47 || 21.9 ||21.9 || 22.0 || 22.4 ||24.3 ||23.2 ||23.0 ||23.2 | ||
+ | |- | ||
+ | |} | ||
+ | |||
+ | |||
+ | |||
+ | <pre> | ||
+ | |||
+ | Run 10496 | ||
+ | |||
+ | Name Min Mean Max Sigma | ||
+ | GAS:i::CDC_Temps-CDC_D1_Temp 25.4 25.5 25.5 0.043 | ||
+ | GAS:i::CDC_Temps-CDC_D2_Temp 25.4 25.5 25.5 0.00854 | ||
+ | GAS:i::CDC_Temps-CDC_D3_Temp 24.8 24.9 24.9 0.0492 | ||
+ | GAS:i::CDC_Temps-CDC_D4_Temp 25.2 25.2 25.2 0 | ||
+ | |||
+ | GAS:i::CDC_Temps-CDC_U1_Temp 23.3 23.4 23.4 0.0464 | ||
+ | GAS:i::CDC_Temps-CDC_U2_Temp 23.2 23.2 23.3 0.0177 | ||
+ | GAS:i::CDC_Temps-CDC_U3_Temp 23.6 23.6 23.6 0 | ||
+ | GAS:i::CDC_Temps-CDC_U4_Temp 24.1 24.1 24.1 0 | ||
+ | |||
+ | RESET:i:GasPanelBarPress1 99.603 99.662 99.712 0.03003 | ||
+ | |||
+ | Run 10777 | ||
+ | Name Min Mean Max Sigma | ||
+ | GAS:i::CDC_Temps-CDC_D1_Temp 24.9 24.9 24.9 0 | ||
+ | GAS:i::CDC_Temps-CDC_D2_Temp 24.6 24.7 24.7 0.0497 | ||
+ | GAS:i::CDC_Temps-CDC_D3_Temp 24 24 24.1 0.0455 | ||
+ | GAS:i::CDC_Temps-CDC_D4_Temp 24.4 24.4 24.4 0 | ||
+ | GAS:i::CDC_Temps-CDC_U1_Temp 22.4 22.4 22.4 0 | ||
+ | GAS:i::CDC_Temps-CDC_U2_Temp 22.2 22.2 22.3 0.0476 | ||
+ | GAS:i::CDC_Temps-CDC_U3_Temp 22.6 22.6 22.7 0.048 | ||
+ | GAS:i::CDC_Temps-CDC_U4_Temp 23.1 23.1 23.1 0 | ||
+ | |||
+ | RESET:i:GasPanelBarPress1 100.74 100.77 100.87 0.040097 | ||
+ | |||
+ | |||
+ | Run 11559 | ||
+ | GAS:i::CDC_Temps-CDC_D1_Temp 24.2 24.3 24.4 0.0272 | ||
+ | GAS:i::CDC_Temps-CDC_D2_Temp 23.1 23.2 23.3 0.0308 | ||
+ | GAS:i::CDC_Temps-CDC_D3_Temp 22.9 23 23 0.0391 | ||
+ | GAS:i::CDC_Temps-CDC_D4_Temp 23.2 23.2 23.2 0 | ||
+ | GAS:i::CDC_Temps-CDC_U1_Temp 21.8 21.9 21.9 0.0392 | ||
+ | GAS:i::CDC_Temps-CDC_U2_Temp 21.8 21.8 21.9 0.0332 | ||
+ | GAS:i::CDC_Temps-CDC_U3_Temp 22 22 22.1 0.0257 | ||
+ | GAS:i::CDC_Temps-CDC_U4_Temp 22.3 22.4 22.4 0.0305 | ||
+ | |||
+ | RESET:i:GasPanelBarPress1 101.02 101.12 101.24 0.07423 | ||
+ | |||
+ | |||
+ | Run 11667 | ||
+ | |||
+ | HDOPS gluon101:~> myStats -b '2016-04-25 03:37:31' -e '2016-04-25 05:09:25' -l GAS:i::CDC_Temps-CDC_D1_Temp,GAS:i::CDC_Temps-CDC_D2_Temp,GAS:i::CDC_Temps-CDC_D3_Temp,GAS:i::CDC_Temps-CDC_D4_Temp,GAS:i::CDC_Temps-CDC_U1_Temp,GAS:i::CDC_Temps-CDC_U2_Temp,GAS:i::CDC_Temps-CDC_U3_Temp,GAS:i::CDC_Temps-CDC_U4_Temp -p 3 | ||
+ | |||
+ | Name Min Mean Max Sigma | ||
+ | GAS:i::CDC_Temps-CDC_D1_Temp 24.2 24.3 24.4 0.0372 | ||
+ | GAS:i::CDC_Temps-CDC_D2_Temp 23.2 23.3 23.4 0.0498 | ||
+ | GAS:i::CDC_Temps-CDC_D3_Temp 22.9 23 23.1 0.0266 | ||
+ | GAS:i::CDC_Temps-CDC_D4_Temp 23.2 23.3 23.3 0.0499 | ||
+ | |||
+ | GAS:i::CDC_Temps-CDC_U1_Temp 21.7 21.9 22 0.102 | ||
+ | GAS:i::CDC_Temps-CDC_U2_Temp 21.7 21.8 22 0.0963 | ||
+ | GAS:i::CDC_Temps-CDC_U3_Temp 21.9 22 22.1 0.0758 | ||
+ | GAS:i::CDC_Temps-CDC_U4_Temp 22.3 22.4 22.5 0.0506 | ||
+ | |||
+ | RESET:i:GasPanelBarPress1 100.47 100.48 100.5 0.005884 | ||
+ | |||
+ | </pre> | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_upstreamtc.jpg|thumb|x70px|upstream thermocouples]] | ||
+ | |[[Image:cdc_downstreamtc.jpg|thumb|x70px|downstream thermocouples]] | ||
+ | |} | ||
+ | |||
+ | |||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_mpv_vs_run.png|thumb|x170px|amplitude MPV (& pressure) vs run number]] | ||
+ | |[[Image:cdc_mpv_vs_p.png|thumb|x170px|amplitude MPV vs pressure]] | ||
+ | |} | ||
+ | |||
+ | <h2>Before and after round 1 of gain corrections </h2> | ||
+ | |||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_run11410_qcorr.png|thumb|x70px|Run 11410 charge vs straw]] | ||
+ | |[[Image:cdc_run11529_qcorr.png|thumb|x70px|Run 11529 charge vs straw]] | ||
+ | |} | ||
+ | |||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_runs11410_11529_mpv.png|thumb|x70px|Runs 11410 and 11529 original]] | ||
+ | |[[Image:cdc_runs11410_11529_cmpv.png|thumb|x70px|After gain correction]] | ||
+ | |} | ||
+ | |||
+ | <h2>More on sag</h2> | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_mpv_vs_sag.png|thumb|x170px|amplitude MPV vs max straw sag]] | ||
+ | |[[Image:cdc_sig_vs_sag.png|thumb|x170px|amplitude sigma vs max straw sag]] | ||
+ | |} | ||
+ | |||
+ | |||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_mpv_and_sag_vs_n.png|thumb|x170px|amplitude MPV vs max straw sag]] | ||
+ | |- | ||
+ | |[[Image:cdc_mpv_and_sag_vs_n_zoom.png|thumb|x170px|expanded for straws 1000-1400]] | ||
+ | |} | ||
+ | MPV of straws with shorter max drift times (steeper fall-off at long time end of time histogram) are ringed in red. The straw sag plot shows 100 + 100*(max sag in mm) | ||
+ | |||
+ | <h2>Gain vs preamp channel (run 11621)</h2> | ||
+ | These plots are from run 11621 (with beam), MPV from fit to amplitude of pulses from selected hits on tracks from the target area with theta 85 to 95 degrees. | ||
+ | |||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:cdc_mpv_chan_1.png|thumb|x300px|rings A, B, C]] | ||
+ | |- | ||
+ | |[[Image:cdc_mpv_chan_2.png|thumb|x300px|rings D, E]] | ||
+ | |- | ||
+ | |[[Image:cdc_mpv_chan_3.png|thumb|x300px|ring F]] | ||
+ | |- | ||
+ | |[[Image:cdc_mpv_chan_4.png|thumb|x300px|ring G]] | ||
+ | |- | ||
+ | |[[Image:cdc_mpv_chan_5.png|thumb|x300px|ring H]] | ||
+ | |- | ||
+ | |[[Image:cdc_mpv_chan_6.png|thumb|x300px|ring I]] | ||
+ | |} |
Latest revision as of 13:01, 18 October 2016
Contents
Run 11559
cosmics, April 20, 2016The above plot is the MPV of a Landau fitted to q for each straw vs straw number; straw numbers start with 1 in the innermost ring, beam left, and increase clockwise around the ring and then out to the next ring, etc. The low gain straws (red) are near the bottom of the CDC.
- The slight upward trend in q vs n (straw number) can also be seen in the plots of amplitude and q for rings 1 and 28.
- The oscillations may be an artefact of the fitted Landau MPV moving with the data count in the histogram. ? What would cause this?
- The troughs in the hit count correspond to troughs in the fitted MPV for q. ???
- The pedestal and amplitude vs n plots do not show huge oscillations, except in number of hits.
- There is a clear oscillation in the hit count vs straw number, which peaks at the sides of the CDC. This is because the mostly vertical cosmic ray tracks pass through many straws at the sides, but only a few above and below. The oscillations should not be present with beam data (but the data probably includes some cosmics).
To-do:
- Repeat with more data
- Use track info - ignore untracked hits
- Pick cosmics out of beam data?
- Beam data oscillations are more sawtooth than sine, why? Runs 11071-11383(?) have the cdc hole.
- Look at drift times
Run 10496
Run 10777
Run 11667
- Low gain straws were n=3064 to 3070, 3270 to 3277, 3479 to 3486. Preamp LV was increased on these before run 11577 [ https://logbooks.jlab.org/entry/3401572 ]
- Straw n=244 has half gain
- Unbowed straws at bottom of ring 24: n=2788, 2789; at bottom of ring 4: n=45; at top of ring 26: n= 2965, 2969
Environment
Run | date | beam (nA) | max drift (ns) | VERY approx q(3522) | pressure (bar) | temp U1 | temp U2 | temp U3 | temp U4 | temp D1 | temp D2 | temp D3 | temp D4 |
10496 | Feb 24 | 41 | 656 | 1350 | 99.71 | 23.3 | 23.2 | 23.6 | 24.1 | 25.4 | 25.5 | 24.8 | 25.2 |
10777 | Mar 6 | 100 | 665 | 1000 | 100.87 | 22.4 | 22.3 | 22.7 | 23.1 | 24.9 | 24.6 | 24.0 | 24.4 |
11559 | Apr 20 | cosmics | 663 | 1150 | 101.24 | 21.9 | 21.8 | 22.0 | 22.4 | 24.3 | 23.2 | 23.0 | 23.2 |
11667 | Apr 25 | 120 | 672 | 1200 | 100.47 | 21.9 | 21.9 | 22.0 | 22.4 | 24.3 | 23.2 | 23.0 | 23.2 |
Run 10496 Name Min Mean Max Sigma GAS:i::CDC_Temps-CDC_D1_Temp 25.4 25.5 25.5 0.043 GAS:i::CDC_Temps-CDC_D2_Temp 25.4 25.5 25.5 0.00854 GAS:i::CDC_Temps-CDC_D3_Temp 24.8 24.9 24.9 0.0492 GAS:i::CDC_Temps-CDC_D4_Temp 25.2 25.2 25.2 0 GAS:i::CDC_Temps-CDC_U1_Temp 23.3 23.4 23.4 0.0464 GAS:i::CDC_Temps-CDC_U2_Temp 23.2 23.2 23.3 0.0177 GAS:i::CDC_Temps-CDC_U3_Temp 23.6 23.6 23.6 0 GAS:i::CDC_Temps-CDC_U4_Temp 24.1 24.1 24.1 0 RESET:i:GasPanelBarPress1 99.603 99.662 99.712 0.03003 Run 10777 Name Min Mean Max Sigma GAS:i::CDC_Temps-CDC_D1_Temp 24.9 24.9 24.9 0 GAS:i::CDC_Temps-CDC_D2_Temp 24.6 24.7 24.7 0.0497 GAS:i::CDC_Temps-CDC_D3_Temp 24 24 24.1 0.0455 GAS:i::CDC_Temps-CDC_D4_Temp 24.4 24.4 24.4 0 GAS:i::CDC_Temps-CDC_U1_Temp 22.4 22.4 22.4 0 GAS:i::CDC_Temps-CDC_U2_Temp 22.2 22.2 22.3 0.0476 GAS:i::CDC_Temps-CDC_U3_Temp 22.6 22.6 22.7 0.048 GAS:i::CDC_Temps-CDC_U4_Temp 23.1 23.1 23.1 0 RESET:i:GasPanelBarPress1 100.74 100.77 100.87 0.040097 Run 11559 GAS:i::CDC_Temps-CDC_D1_Temp 24.2 24.3 24.4 0.0272 GAS:i::CDC_Temps-CDC_D2_Temp 23.1 23.2 23.3 0.0308 GAS:i::CDC_Temps-CDC_D3_Temp 22.9 23 23 0.0391 GAS:i::CDC_Temps-CDC_D4_Temp 23.2 23.2 23.2 0 GAS:i::CDC_Temps-CDC_U1_Temp 21.8 21.9 21.9 0.0392 GAS:i::CDC_Temps-CDC_U2_Temp 21.8 21.8 21.9 0.0332 GAS:i::CDC_Temps-CDC_U3_Temp 22 22 22.1 0.0257 GAS:i::CDC_Temps-CDC_U4_Temp 22.3 22.4 22.4 0.0305 RESET:i:GasPanelBarPress1 101.02 101.12 101.24 0.07423 Run 11667 HDOPS gluon101:~> myStats -b '2016-04-25 03:37:31' -e '2016-04-25 05:09:25' -l GAS:i::CDC_Temps-CDC_D1_Temp,GAS:i::CDC_Temps-CDC_D2_Temp,GAS:i::CDC_Temps-CDC_D3_Temp,GAS:i::CDC_Temps-CDC_D4_Temp,GAS:i::CDC_Temps-CDC_U1_Temp,GAS:i::CDC_Temps-CDC_U2_Temp,GAS:i::CDC_Temps-CDC_U3_Temp,GAS:i::CDC_Temps-CDC_U4_Temp -p 3 Name Min Mean Max Sigma GAS:i::CDC_Temps-CDC_D1_Temp 24.2 24.3 24.4 0.0372 GAS:i::CDC_Temps-CDC_D2_Temp 23.2 23.3 23.4 0.0498 GAS:i::CDC_Temps-CDC_D3_Temp 22.9 23 23.1 0.0266 GAS:i::CDC_Temps-CDC_D4_Temp 23.2 23.3 23.3 0.0499 GAS:i::CDC_Temps-CDC_U1_Temp 21.7 21.9 22 0.102 GAS:i::CDC_Temps-CDC_U2_Temp 21.7 21.8 22 0.0963 GAS:i::CDC_Temps-CDC_U3_Temp 21.9 22 22.1 0.0758 GAS:i::CDC_Temps-CDC_U4_Temp 22.3 22.4 22.5 0.0506 RESET:i:GasPanelBarPress1 100.47 100.48 100.5 0.005884
Before and after round 1 of gain corrections
More on sag
MPV of straws with shorter max drift times (steeper fall-off at long time end of time histogram) are ringed in red. The straw sag plot shows 100 + 100*(max sag in mm)
Gain vs preamp channel (run 11621)
These plots are from run 11621 (with beam), MPV from fit to amplitude of pulses from selected hits on tracks from the target area with theta 85 to 95 degrees.