Test of return line chamber with new firmware

— DAQ user 2018/06/19 08:34

• Gas flowmeters recalibrated
• Barril with 100 m rislan tube
• 44 % humidity out of the chamber (input 24 % to be understood -probe, flux ?-)

We change the FEB #4 that has low gain to old FEB #2 change to number 14.

We first make pedestal runs to align per strip all channels to 480 (DB state TDC_RETNEW_4). We masked the most external strip (TDC9 strip 1 Petiroc 31 & 29).

There was still a lot of noise, we improve the grounding reducing it but it was still high (turnon ~ 500)

We finally swithc off all unconnected PR channel 0→5,24,26,28,30 and it solves the problem, the turnon is around 486 and the noise bellow 2 VTH DAC count. We set the threshold to 500 and it might possibly be reduced to ~ 496 if all channels are finely tuned individually.

One additional strip corresponding to TDC 20 is dead on TDC 14

s.Change6BDac(9*256+10,1,31,0)
s.Change6BDac(9*256+10,1,29,0)
s.ChangeMask(9*256+10,1,31,1)
s.ChangeMask(9*256+10,1,29,1)
# Chambre return
dif=[9,10,11,14]
chan=[30,28,26,24,5,4,3,2,1,0]
for i in dif:
    for j in chan:
        s.Change6BDac(i*256+10,1,j,0)
        s.ChangeMask(i*256+10,1,j,1)



#=> TDC_RET_NEW_6 (->740988)
s.ChangeMask(14*256+10,1,8,1)
s.Change6BDac(14*256+10,1,8,0)
#=> TDC_RET_NEW_7 (->740989)

# Firmware common coarse resultats (740990)

Data are on lyosdhcal10 /data/local/GIFPP/

acqilc@lyosdhcal9:~$ slccontrol --slc-humstatus
         H0         T0         H1         T1  
      43.19     299.40      22.68     296.97 
acqilc@lyosdhcal9:~$ slccontrol --slc-hvstatus --first=0 --last=6
  Chan       VSET       ISET       VOUT       IOUT     RAMPUP     STATUS 
#0000    7400.00       5.00    7406.00       0.20      20.00          1 
#0001       0.00       5.00       0.00       0.00      50.00          0 
#0002       0.00       5.00       1.00       0.00      50.00          0 
#0003       0.00       5.00       2.00       0.00      50.00          0 
#0004    7400.00       5.00    7400.00       0.00      20.00          1 
#0005    3000.00      10.00       3.00       0.00      50.00          0 
#0006       0.00       0.00       0.00       0.00       0.00          0 
acqilc@lyosdhcal9:~$ slccontrol --slc-ptstatus
          P          T  
    1002.96     300.55 
acqilc@lyosdhcal9:~$ date
Tue Jun 19 13:40:57 CEST 2018

— DAQ user 2018/06/20 09:52

acqilc@lyosdhcal9:~$ slccontrol --slc-ptst
          P          T  
     998.87     299.15 
acqilc@lyosdhcal9:~$ slccontrol --slc-hums
         H0         T0         H1         T1  
      25.10     296.79      40.62     299.75 

acqilc@lyosdhcal9:~$ slccontrol --slc-hvstatus --first=0 --last=6
  Chan       VSET       ISET       VOUT       IOUT     RAMPUP     STATUS 
#0000    7500.00       5.00    7505.00       0.20      20.00          1 
#0001       0.00       5.00       0.00       0.00      50.00          0 
#0002       0.00       5.00       0.00       0.00      50.00          0 
#0003       0.00       5.00       2.00       0.00      50.00          0 
#0004    7500.00       5.00    7499.00       0.00      20.00          1 
#0005    3000.00      10.00       2.00       0.00      50.00          0 
#0006       0.00       0.00       0.00       0.00       0.00          0 

HVEFF ~ HVAPP

⇒ 741028 a 7400

⇒ 741029 a 7500

⇒ 741030 a 7500

⇒ 741031 a 7500

Nothing to do with threshold scns but I top reached 0.3 microA

Si quelqu'un y comprend quelque chose…

— DAQ user 2018/06/21 16:15

On change l'humidification Frigo a 11 C ⇒ 43 % d'humidite en entree, on laisse circuler 1 h

TFE=5.69 l/h IsoButane=0.3 l/h SF6 = 0.018 l/h

T Frigo=11.46 C

acqilc@lyosdhcal9:~$ slccontrol --slc-hums Humidite entree et sortie
         H0         T0         H1         T1  
      44.05     297.61      43.83     300.24 
acqilc@lyosdhcal9:~$ slccontrol --slc-ptst P et T dans le Dome
          P          T  
     996.86     305.65 

— DAQ user 2018/06/22 14:37

Apres une nuit entiere de gaz humide ~ 45 % d'humidite

— DAQ user 2018/06/23 07:18

— DAQ user 2018/06/27 06:57

Les conditions enverionnmentales n'ont pas changees

         H0         T0         H1         T1  
      49.32     294.89      45.12     296.18 
          P          T  
     998.56     297.35 

Les courants sont toujours les memes mais il y a eu un saut en gain que l'on retrouve aussi en Rate …

Piedestal 741127 ca n'a pas bouge

On corrige le connecteur Piedestal piste a piste 741133.

Donnees copiees sur /data/srv02/RAID6/GIFPP10 jusqu'au run 741130 non inclus

C4H10 was low pressure … Not sur the % was ok. Flow was also a few perturbated, we added 50 m of rislan pipe before the chamber. It is now much better but condition changed:

      H0         T0         H1         T1  
    53.17     291.22      43.56     292.12 
        P          T Dome  
   993.70     296.85 

Fridge Temp= 281.75 K ⇒ expected humidty @ 292 = 51.4 % (OK)

Temp in algeco ~ 21 C in Dome > 23 - 31. The mixer is in the Dome so this part is not well controlled….

Run during the night:

Trigger des 2 cotes centres sur TDC11