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====== Logbook ======



===== Summary =====


^ Run ^ Mixture ^ Configuration ^ HV Old chmb ^ HV New chmb ^ SC ^ BD ^ NaI ^ N evts ^ rate ^ comments ^
| run_4jul2010_5 | 80/20 | conf_040710_acq5 | 2.0 kV | 2.0 kV| - | yes | yes | 400 | 0.1 Hz | Wrong Config file (TDC channels for QDC matching) |
| run_4jul2010_6 | 80/20 | conf_040710_acq6 | 2.0 kV | 2.0 kV| - | yes | yes | 4000 | 0.1 Hz | Fixed config file. Pedestal were wrong due to wrong LV |
| run_4jul2010_7 | 80/20 | conf_040710_acq6 | 2.0 kV | 2.0 kV| - | yes | yes | 400 | 0.1 Hz |LV is ok now. |
| run_5jul2010_1 | 80/20 | conf_050710_acq1 | 2.0 kV | 2.3 kV| - | yes | yes | 4000 | 0.003 Hz |3x3 added.  |



===== Day 1 Configuration For cosmics acquisition =====

==== Hardware ====

=== Old Chamber ===

  - Discriminators: All at 15 mV

=== New Chamber ===

  - Discriminators: All at 15 mV

=== Beam Dump ===

  - Discriminators: 50 mV

=== Start Counter ===

  - Discriminators: 40 mV

=== NaI  ===

==== TDC channels ====

  - Channels from 0 - 31 are from NIM/ECL AND from Blue camac disc
  - Channels from 32 - 63 are from Black Camac disc

==== Software / Mapping ====

**Configuration being saved in conf_040710_cm1.txt**

**Trigger time in CH 0 of the NIM ECL translator**

=== New Chamber Mapping ===

  * TDC: RED cables from 1 - 24
    - Cables 1 - 3 : splitted to acquire Both Time AND Charge. Go to Nim - Ecl translator Ch 10 - 11 - 12. [Guess **TDC 9,10,11**]
    - Cables 4 - 21 : Camac discriminators .. last 2 chs of 1° black disc + ALL 2° black disc
    - Cables 22 - 24 : NIM discriminator .. (2° NIM !io discriminator). Go to Nim - Ecl translator Ch 13 - 14 - 15. [Guess **TDC 12,13,14**]
  * QDC: red cables from 1 - 3
    - Cables 1 - 3 : From io Nim disc to Channels 8 - 10 QDC. Delay of 200 ns

=== Old Chamber Mapping ===

  * TDC: black cables from 0 - 31
    - Cables 0 - 3 : splitted to acquire Both Time AND Charge. Go to Nim - Ecl translator Ch 6 - 7 - 8 - 9. [Guess **TDC 5,6,7,8**]
    - Cables 4 - 31 : Camac discriminators .. All blue camac discr [4-18] + first 14 channels of 1° camac black disc [19-31].
  * QDC: black cables from 0 - 3
    - Cables 0 - 3 : From io Nim disc to Channels 4 - 7 QDC. Delay of 200 ns

=== Beam Dump Mapping ===

  * TDC: black cables from 32 - 33. Nim io discriminator. Go to Nim - Ecl translator Ch 2 - 3. [Guess **TDC 1,2**]
  * QDC: black cables from 32 - 33
    - Cables 32 - 33 : From linear Fan IO to Channels 0 - 1 QDC. Delay of 100 ns

=== Start Counter Mapping ===

  * TDC: black cables from 34 - 35. Nim io discriminator. Go to Nim - Ecl translator Ch 4 - 5. [Guess **TDC 3,4**]
  * QDC: black cables from 34 - 35
    - Cables 34 - 35 : From linear Fan IO to Channels 2 - 3 QDC. Delay of 100 ns

=== NaI Mapping ===

  * TDC: red cables from 25 - 26. Nim discriminator. **NOT BEING ACQUIRED**. 
  * QDC: red cables from 25 - 26. Nim discriminator. **NOT BEING ACQUIRED**. 

===== Run_4jul2010_5.out =====

After proper shaping of NaI signals we see also times in the Beam Dump.
Brought HV of Old Chamber to 2.0 kV.
** Now NaI is acquired and Start Counter is not **

===== Dead Channels =====

  - **OLD CHmb cable 14**  11 blue discriminator
  - **New Chmb cable 13**  8 second black discriminator

===== 5 July Night First start =====

  * HV old : 2.2, HV new 2.3; BD HV 1.65 kV; BD is not attenuated. First Beam studies started at ~20:00
  * Collimator is not used (just the 3cm before the SC). Picture is obtained... PMMA has been removed by Francesco.

  * First run::  data/run_5jul10_beam1.txt . Slowly getting the BEAM. They are opening the BEAM, with increasing Freq. Started with Less than 1 Hz. **QDC Channel 4 on the SCOPE** 
  * Second run:: data/run_5jul10_beam2.txt 7 channels (-1 that is curren.ty looked at on the scope) are being attenuated. BD no attenuation. **QDC channel 4 and 8 on the scope**

  * Third run:: data/run_5jul10_beam3.txt . **All QDC channels connected** Channels cannot be attenuated more. They are saturating the QDC. Try to go down with HV. New Chamber 2.1kV , Old CHmb 2.1 kV. 
  * QDC seems broken (20:43). several run beam3 --> beam6 done as study. 
  * Delayed CH 32 about 5 ns to remove time jitter of BD.
**Both QDC and SC are not working.... Struggling to see something**
  * Recovered QDC: was going in busy state: needed few read cycles to exit from busy. 23:30 **We start to see something again**
  * **First Beam Dump reasonable peak**: data/run_5jul10_beam13.txt
  * Start counter is a ~ complete failure: NO signal on QDC [noise ~ + baseline subtracting charge from pedestal]. Time resolution ~3 ns.
  * 00:53 decided to go for a scan of HV of the DCH. 
    - First points 1.6 kV. Chamber is attenuated. **Beam dump is not anymore attenuated** run_6jul10_beam1 . Attenuated @ 0.5 all the wire chambers to the QDC


^ Run ^ Mixture ^ Configuration ^ HV Old chmb ^ HV New chmb ^ SC ^ BD ^ NaI ^ N evts ^ rate ^ comments ^
| run_6jul10_beam1 | 80/20 | conf_050710_beam2 | 1.6 kV | 1.6 kV| yes | yes | - | 10k | ~150 Hz | OK. |
| run_6jul10_beam2 | 80/20 | conf_050710_beam2 | 1.7 kV | 1.7 kV| yes | yes | - | 30k | ~150 Hz | OK. |
| run_6jul10_beam3 | 80/20 | conf_050710_beam2 | 1.8 kV | 1.8 kV| yes | yes | - | 30k | ~150 Hz | OK. |
| run_6jul10_beam4 | 80/20 | conf_050710_beam2 | 1.9 kV | 1.9 kV| yes | yes | - | 30k | ~150 Hz | OK. |
| run_6jul10_beam5 | 80/20 | conf_050710_beam2 | 2.0 kV | 2.0 kV| yes | yes | - | 30k | ~150 Hz | OK. |
| run_6jul10_beam6 | 80/20 | conf_050710_beam2 | 2.1 kV | 2.1 kV| yes | yes | - | 30k | ~150 Hz | OK. |
| run_6jul10_beam7 | 80/20 | conf_050710_beam2 | 2.2 kV | 2.2 kV| yes | yes | - | 30k | ~150 Hz | OK. |
| run_6jul10_beam8 | 80/20 | conf_050710_beam2 | 2.3 kV | 2.3 kV| yes | yes | - | 30k | ~150 Hz | OK. |

  * **Preparing night acq.** Threshold Start Counter moved to 30 mV for night acquisition. HV of all the chambers is 2.2 kV. Mixture still 80/20. Attenuate the Beam Dump (only 1 channel). Removed all the attenuators from the NEW chamber signals [chs 8,9,10 of QDC].
  * **Acquired 1.5M events in ~ 3 hours.** run_6jul10_allnight with conf_050710_beam2 configuration.

==== DISCLAIMER ====


**There is a good chance that all the data below that are screwed, due to gas flow problems.**


===== 6 July Morning Studies (bad gas) =====

  * Started the scans @ high L for the S-T relations measurements: 2 other points at 2.3 and 2.1 kV with 300k events each are foreseen:
    - data/run_6jul10_stscan2.3.txt : 300k @ 2.3 kV for both chambers.
    - data/run_6jul10_stscan2.1.txt : 300k @ 2.1 kV for both chambers.
  * 7:55 Raised the thresholds to 70 mV for all the Chambers channels. First scan point @ 2.1 kV
    - data/run_6jul10_stscan2.1_70mV.txt
    - data/run_6jul10_stscan2.2_70mV.txt
    - data/run_6jul10_stscan2.3_70mV.txt
  * 10:00 Finished the Scan. Change the Start counter and go to get breakfast... 2.3 kV , 70mV **Now we have the collimator**
    - data/run_6jul10_Collim2.3_70mV.txt :: 460 k events
  * 11:20 Taking O(10)k events at low HV, High Th. 2.0 kV
    - data/run_6jul10_Collim2.0_70mV.txt 20k
    - data/run_6jul10_Collim1.9_70mV.txt 10k
    - data/run_6jul10_Collim1.8_70mV.txt 10k

===== 6 July Lunch Studies (bad gas) =====

**Major change of configuration**. conf_060710_lunch
  - Old start counter gets in. [connected in place of the channels 1-2 of New Chamber]
  - 3x3 Scintillator gets in [connected in place of the channel 3 of New Chamber]
  - **New Chamber chs 1-3 are TDC disconnected**
  - Change of the delay of the New start counter. **From 250 we go to 200ns each.**
  - Connected Red cables 2,3 to Old start counter. Disc IN/out Chs 7-8.
 

===== 6 July Damn Gas Studies =====

After the major change of configuration we restarted to take the night data in steps of 100k evts.

  - First dataset with GAS OK: run_6jul10_Collim2.3_70mV_regas.txt 100k evts. Run with old+new Start Counter discriminator TH @ 20 mV. **One HV Ch (Ch0:: U view of old chamber) is @ 2.2 kV**
  - Second dataset @ 2.2 kV run_6jul10_Collim2.2_70mV_regas.txt . Old+new Start Counter Discriminator Thresholds now are at 30 mV
  - Second dataset @ 2.1 kV run_6jul10_Collim2.1_70mV_regas.txt . Old+new Start Counter Discriminator Thresholds now are at 15 mV

Note: 
  - New Start Counter QDC channels 2,11
  - Old Start Counter QDC channels 8,9

===== 6 July 3x3 Studies =====

  - New Chamber is Turned Off
  - Triggering on Beam Dump: we see just the events that are not STOPPED by the 3x3. ~60 Hz.
  - 6.5 k events taken in data/run_6jul10_3x3Dumper.txt
  - Added 3x3 to the trigger: 10k events taken in data/run_6jul10_3x3DumperTrig.txt **Too much light**
  - Damped the 3x3 signal by a factor of 4. run_6jul10_3x3DumperTrig_Attx4
  - Added a 3mm collimator to study the scotch: run_6jul10_3x3DumperTrig_Attx4_Coll3mm 

===== 6 July 90° measurement =====

  - High rate, triggering on the Beam Dump. [Forget about neutrals we do not have time]
  - HV chmb old is 2.2 kV
  - New Chmb has been un-cabled, powered off
  - Thresholds @ 70 mV .... Config file to be worked out
  - Meas 3: 3x3 delayed.