Difference between revisions of "Gain Adjustments"

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(Table of Gains)
Line 19: Line 19:
 
{| class="wikitable" style="text-align: left; width: 700px; height: 900px;
 
{| class="wikitable" style="text-align: left; width: 700px; height: 900px;
 
|-
 
|-
 +
! position
 
! base ID
 
! base ID
 
! V<sub>0</sub>
 
! V<sub>0</sub>
 
! V<sub>0</sub>+100
 
! V<sub>0</sub>+100
 
|-
 
|-
| 0x72360e
+
| H1
| 1446.51
+
| 0x732c79
| 1546.51
+
| 1421.96
 +
| 1521.96
 
|-
 
|-
 +
| H2
 
| 0x72c932
 
| 0x72c932
 
| 1413.45
 
| 1413.45
 
| 1513.45
 
| 1513.45
 
|-
 
|-
 +
| H3
 +
| 0x72360e
 +
| 1446.51
 +
| 1546.51
 +
|-
 +
| H4
 +
| 0x738545
 +
| 1493.05
 +
| 1593.05
 +
|-
 +
| H5
 
| 0x733d10
 
| 0x733d10
 
| 1483.08
 
| 1483.08
 
| 1583.08
 
| 1583.08
 
|-
 
|-
| 0x738516
+
| V1
| 1436.49
+
| 0x733e06
| 1536.49
+
| 1451.23
|-
+
| 1551.23
| 0x72579b
+
| 1442.73
+
| 1542.73
+
 
|-
 
|-
 +
| V2
 
| 0x72dacc
 
| 0x72dacc
 
| 1477.14
 
| 1477.14
 
| 1577.14
 
| 1577.14
 
|-
 
|-
| 0x738545
+
| V3
| 1493.05
+
| 1593.05
+
|-
+
 
| 0x72bb3f
 
| 0x72bb3f
 
| 1365.49
 
| 1365.49
 
| 1465.49
 
| 1465.49
 
|-
 
|-
| 0x732c79
+
| V4
| 1421.96
+
| 0x72579b
| 1521.96
+
| 1442.73
 +
| 1542.73
 
|-
 
|-
| 0x733e06
+
| V5
| 1451.23
+
| 0x738516
| 1551.23
+
| 1436.49
 +
| 1536.49
 
|-
 
|-
 
| remote
 
| remote
 +
|
 
| 1489.09
 
| 1489.09
 
| 1589.09
 
| 1589.09
 
|}
 
|}

Revision as of 10:55, 4 November 2011

Gains for each PMT/base combination to be used for the beamtest have been tested. Our method was to place two triggers on top of each other, and count the coincidence rate of cosmic rays as we vary the HV on the trigger we want to test. The other trigger was kept at 1700 V. Below are plots for the gain adjustments. There are 10 trigger scintillators, and 1 remote trigger.

The gains were fit with a "turnon function", the same we use for the PMT tests, and the central value of the turnon curve (V0) was obtained. The nominal HV values for each PMT/base combination is V0+100 [V].

Figure of Gains

  • Triggers:
ID:0x72360e
ID:0x72c932
ID:0x733d10
ID:0x738516
ID:0x72579b
ID:0x72dacc
ID:0x738545
ID:0x72bb3f
ID:0x732c79
ID:0x733e06


  • Remote Trigger:
remote trigger


Table of Gains

position base ID V0 V0+100
H1 0x732c79 1421.96 1521.96
H2 0x72c932 1413.45 1513.45
H3 0x72360e 1446.51 1546.51
H4 0x738545 1493.05 1593.05
H5 0x733d10 1483.08 1583.08
V1 0x733e06 1451.23 1551.23
V2 0x72dacc 1477.14 1577.14
V3 0x72bb3f 1365.49 1465.49
V4 0x72579b 1442.73 1542.73
V5 0x738516 1436.49 1536.49
remote 1489.09 1589.09