Origami6
HV=+-40V,
no cooling
beam on; xy table position x=306 y=74.5
Istart=57µA;
std. I2C settings

centered

currents:
8.10.2011  00:07:43  event=991  rate=0events/s temp/curr=33.0/-15.4 33.0/-17.3 33.0/-17.7 31.9/011.5 31.9/013.2 32.0/040.20
...

08.10.2011  06:32:34  event=179710  rate=0events/s temp/curr=33.1/-22.1 33.0/-25.6 33.1/-22.6 31.9/018.2 31.8/021.7 31.9/048.5
08.10.2011  06:33:28  event=180105  ***WARNING*** Error detected in APV 0, subevent 2. Event discarded, reset sent.
 

Permanent APV errors at several (all p-side, some n-side) APV chips after 180105 events, which could not be recovered by software resets. After restart of run, all APVs where alive again, hence hardware reset and I2C reconfiguration after 5 or 10 consecutive APV errors should be added to TUXDAQ software.

After APV errors occured, the cummulative bias current decrised from 78µA to 54µA. This effect can occures whenever the digital part of the APV is switched between idle and full operation. It seems that this is a thermal effect, caused by  the slightly higher power consumption of the digital part of the chips.

falsches config file (single statt multi6)

no cooling
beam on; xy table position x=322  y=80
HV=200V Istart_PY=7.6uA;  Istart_N=0.42
std. I2C settings

wrong timing

no cooling
beam on; xy table position x=322  y=80
HV=200V Istart_PY=7.6uA;  Istart_N=0.42
std. I2C settings

no cooling
beam on; xy table position x=322  y=80
HV=200V Istart_PY=8.2uA;  Istart_N=0.45uA
std. I2C settings, now with correct timing

no cooling
beam on; xy table position x=333  y=80
HV=200V Istart_PY=8.2uA;  Istart_N=0.45uA
std. I2C settings

no cooling
beam on; xy table position x=327,5  y=65
HV=200V Istart_PY=8.2uA;  Istart_N=0.45uA
std. I2C settings

no cooling
beam on; xy table position x=330  y=74
HV=200V Istart_PY=1,9uA;  Istart_N=0.27uA
std. I2C settings

no cooling
beam on; xy table position x=330  y=64
HV=200V Istart_PY=1,9uA;  Istart_N=0.27uA
std. I2C settings

no cooling
beam on; xy table position x=330  y=74
HV=200V Istart_PY=1,9uA;  Istart_N=0.27uA
std. I2C settings

same as run021, but taking more events

no cooling
beam on; xy table position x=320.5  y=79.5
HV_CNM=20V, HV_BSTD1-N=200V
Istart_CNM= 28 / 1 uA;  Istart_BSTD= 0.12 uA

no cooling
beam on; xy table position x=335.5  y=79.5
HV_CNM=20V, HV_BSTD1-N=200V
Istart_CNM= 31 / 1.4 uA;  Istart_BSTD= 0.2 uA

no cooling
beam on; xy table position x=328  y=69.5
HV_CNM=20V, HV_BSTD1-N=200V
Istart_CNM= 27 / 1.5 uA;  Istart_BSTD= 0.2 uA

hit modules in bottom left corner -> Zones narrow and half-narrow for COMB_IRRAD, Zones wide and half-wide for COMM_IRRAD
timing corrected w.r.t. run004

Position of HEPHY x-z-table:
x = 322
z = 70

Note: z-Position not identical with position of run004, x-z-table seemed to have moved vertically. This configuration now hits the same sensor position.

Sr90, large scintillator, HVret @ Origami open
Origami Mod. #4
HV=+-40V, Ibias=2,03µA
CO2 cooling on, Tin=-16°C, Tout=-16,7°C

standard I²C settings for uncooled APV chips.

Lab measurement with new dark box but old, large scintillator.

20.02.2012  17:08:27  event=5771  ***WARNING*** Error detected in APV 6, subevent 0. Event discarded, reset sent. --> APV 6 recovered afterwards

Sr90, large scintillator, HVret @ Origami open
Origami Mod. #4
HV=+-40V, Ibias=2,03µA
CO2 cooling on, Tin=-16°C, Tout=-16,7°C

I²C settings for cooled APV chips --> same as used in run010.

Lab measurement with new dark box but old, large scintillator.

CO2 empty after 24497 events --> run stopped

same as run101

Sr90, large scintillator, HVret @ Origami open
Origami Mod. #4
HV=+-40V, Ibias=1,8µA
CO2 cooling on, Tin=-20.2°C, Tout=-21.3°C

I²C settings for cooled APV chips --> same as used in run010
e:\cvi-projects\apvdaq_fadc\origami6_V2_multi6_cooled.cfg

Lab measurement with new dark box but old, large scintillator.

CO2 empty after 24497 events --> run stopped --> no corresponding calibration available, but for rought analysis cal100 can be used for this run, too

Sr90, large scintillator,
HVret @ Origami closed
HVret @ SMU connected
Origami Mod. #4
HV=+-40V, Ibias=1,6µA
CO2 cooling on, Tin=-20.5°C, Tout=-21.5°C

I²C settings for cooled APV chips --> same as used in run010

e:\cvi-projects\apvdaq_fadc\origami6_V2_multi6_cooled.cfg

Lab measurement with new dark box but old, large scintillator

Wires between HV connectors ground and HVret conntact at the mambo were open --> no HVret conntection between module and SMUs!
Moreover the SMU Inv. Nr. 545-078 has either an unstable output or problems with the current measurement.

Sr90, large scintillator,
Origami Mod. #4
HV=+-40V, Ibias=1,6µA
CO2 cooling on, Tin=-20.5°C, Tout=-21.5°C

I²C settings for cooled APV chips --> same as used in run010

e:\cvi-projects\apvdaq_fadc\origami6_V2_multi6_cooled.cfg

Lab measurement with new dark box but old, large scintillator

SMU:  +HV=Inv.Nr. 545-77    -HV=Inv.Nr. 540-702

HVret configuration:

0 ... switch open / not connected
1 ... switch closed / connected
 

J7... HV ret @ hybrid

Sr90, large scintillator,
Origami Mod. #4
HV=+-40V, Ibias=1,6µA
CO2 cooling on, Tin=-20.5°C, Tout=-21.5°C

I²C settings for cooled APV chips --> same as used in run010

e:\cvi-projects\apvdaq_fadc\origami6_V2_multi6_cooled.cfg

Lab measurement with new dark box but old, large scintillator

SMU:  +HV=Inv.Nr. 545-77    -HV=Inv.Nr. 540-702

HVret configuration:

0 ... switch open / not connected
1 ... switch closed / connected
 

J7... HV ret @ hybrid

Same as run104, but now J7 open

Again spikes in bias current!

Sr90, large scintillator,
Origami Mod. #4
HV=+-40V, Ibias=1,6µA
CO2 cooling on, Tin=-20.5°C, Tout=-21.5°C

I²C settings for cooled APV chips --> same as used in run010

e:\cvi-projects\apvdaq_fadc\origami6_V2_multi6_cooled.cfg

Lab measurement with new dark box but old, large scintillator

SMU:  +HV=Inv.Nr. 545-77    -HV=Inv.Nr. 540-702

HVret configuration:

0 ... switch open / not connected
1 ... switch closed / connected
 

J7... HV ret @ hybrid

Same as run105, but now J5 and J7 open