Difference between revisions of "Cathode drift potential and count rate runs for 2.97kV GEM"

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=G4 Simulation=
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=01/11/15=
 
=01/11/15=
  
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−
|1/11|| 4.07  || 1.1k || Open ||off || 8501||  [[File:CATH4.07_GEM2.97_8502c_8501.png |100px ]]
+
|1/11|| 4.07  || 1.1k || Open ||off || 8501||  filter amp decreased to from 2x to1x [[File:CATH4.07_GEM2.97_8502c_8501.png |100px ]]
 
|-
 
|-
 
|1/11||4.07 || 1.1k || Closed || off || 8502||  
 
|1/11||4.07 || 1.1k || Closed || off || 8502||  
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|-
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|1/11|| 4.07  || 1.1k || Open ||on || 8504|| very low rate [[File:CATH4.07_GEM2.97_8503c_8504.png |100px ]]
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|-
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|1/11||4.07 ||1.1k  || Closed || on || 8503|| very low rate
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|-
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|1/11|| 4.07  || 1.1k || Open ||on || 8506|| GEM decreased  from 2.97 to 2.87 kV the rate increased [[File:CATH4.07_GEM2.97_8507c_8506.png |100px ]]
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|-
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|1/11||4.07 ||1.1k  || Closed || on || 8507|| GEM decreased  from 2.97 to 2.87 kV
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|-
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|1/11|| 4.07  || 1.1k || Open ||off || 8509|| GEM decreased  from 2.97 to 2.87 kV the rate increased [[File:CATH4.07_GEM2.97_8508c_8509.png |100px ]]
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|-
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|1/11||4.07 ||1.1k  || Closed || off || 8508|| GEM decreased  from 2.97 to 2.87 kV
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|-
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|1/11|| 4.07  || 1.1k || Open ||off || 8510|| GEM decreased  from 2.87 to 2.77 kV the rate increased [[File:CATH4.07_GEM2.97_8511c_8510.png |100px ]]
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|-
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|1/11||4.07 ||1.1k  || Closed || off || 8511|| GEM decreased  from 2.87 to 2.77 kV
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|-
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|1/11|| 4.07  || 1.1k || Open ||on || 8513|| GEM decreased  from 2.87 to 2.77 kV the rate increased [[File:CATH4.07_GEM2.97_8512c_8513.png |100px ]]
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|-
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|1/11||4.07 ||1.1k  || Closed || on || 8512|| GEM decreased  from 2.87 to 2.77 kV
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|-
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|1/12|| 3.87  || 1.1k || Open ||off || 8515|| 6' GEM 2.77 kV [[File:CATH3.87_GEM2.77_8516c_8515.png |100px ]]
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|-
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|1/12||3.87 ||1.1k  || Closed || off || 8516||
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|-
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|1/12|| 3.87  || 1.1k || Open ||on || 8518||  GEM 2.77 kV [[File:CATH3.87_GEM2.87_8517c_8518.png |100px ]]
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|-
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|1/12||3.87 ||1.1k  || Closed || on || 8517||
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|-
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|1/12|| 3.97  || 1.1k || Open ||on || 8520||  GEM 2.87 kV [[File:CATH3.97_GEM2.87_8521c_8520.png |100px ]]
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|-
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|1/12||3.97 ||1.1k  || Closed || on || 8521||
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|-
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|1/12|| 3.97  || 1.1k || Open ||off || 8523|| 6' GEM 2.87 kV [[File:CATH3.97_GEM2.87_8522c_8523.png |100px ]]
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|-
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|1/12||3.97 ||1.1k  || Closed || off || 8522|| 6'
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|-
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|1/13|| 3.97  || 1.1k || Open ||off || 8524||  GEM 2.87 kV [[File:CATH3.97_GEM2.87_8526c_8524.png |100px ]]
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|-
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|1/13||3.97 ||1.1k  || Closed || off || 8526||
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|-
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|1/13|| 3.97  || 1.1k || Open ||on || 8528||  GEM 2.87 kV [[File:CATH3.97_GEM2.87_8527c_8528.png |100px ]]
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|-
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|1/13||3.97 ||1.1k  || Closed || on || 8527||
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|-
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|1/13|| 4.07  || 1.1k || Open ||on || 8529||  GEM 2.97 kV [[File:CATH4.07_GEM2.97_8530c_8529.png |100px ]]
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|-
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|1/13||4.07 ||1.1k  || Closed || on || 8530||
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|-
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|1/13|| 4.07  || 1.1k || Open ||off || 8532||  GEM 2.97 kV [[File:CATH4.07_GEM2.97_8532c_8531.png |100px ]]
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|-
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|1/13||4.07 ||1.1k  || Closed || off || 8531||
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|-
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|1/14|| 3.97  || 1.1k || Open ||off || 8533||  GEM 2.87 kV [[File:CATH3.97_GEM2.87_8534c_8533.png |100px ]]
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|-
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|1/14||3.97 ||1.1k  || Closed || off || 8534||
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|-
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|1/14|| 3.97  || 1.1k || Open ||on || 8536||  GEM 2.87 kV [[File:CATH3.97_GEM2.87_8535c_8536.png |100px ]]
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|-
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|1/14||3.97 ||1.1k  || Closed || on || 8535||
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|-
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|1/14|| 4.07  || 1.1k || Open ||on || 8537|| low rate but a higher charge GEM 2.97 kV [[File:CATH4.07_GEM2.97_8538c_8537.png |100px ]]
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|-
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|1/14||4.07 ||1.1k  || Closed || on || 8538|| low rate but a higher charge
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|-
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|1/14|| 4.07  || 1.1k || Open ||off || 8540|| low rate but a higher charge GEM 2.97 kV [[File:CATH4.07_GEM2.97_8539c_8540.png |100px ]]
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|-
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|1/14||4.07 ||1.1k  || Closed || off || 8539|| 7' low rate but a higher charge
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|-
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|1/14|| 4.27  || 1.3k || Open ||off || 8542|| GEM 2.97 kV [[File:CATH4.27_GEM2.97_8543c_8542.png |100px ]]
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|1/14||4.27 ||1.3k  || Closed || off || 8543||
 
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==01/13/15==
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;Source on
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[[File:1.1k_all_2.79_2.97_closedon.png|100px ]]
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[[File:1.1k_all_2.79_2.97_openon.png|100px ]]
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[[File:1.1k_all_2.79_2.97_subon.png|100px ]]
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;Source off
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[[File:1.1k_all_2.79_2.97_closedoff.png|100px ]]
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[[File:1.1k_all_2.79_2.97_openoff.png|100px ]]
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[[File:1.1k_all_2.79_2.97_suboff.png|100px ]]
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==01/13/15==
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The figure below shows the difference between open and closed shutter as VGEM=2.97 and VCATH=4.07.
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[[File:C3.97_G2.87_openonoff_8536_33.png|100px]]
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[[File:C4.07_G2.97_openonoff_8540_37.png|100px]]
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The two plots above show a difference as the source is on and when it is off in case of shutter open. But the rate decreases a lot when the GEM voltage increases even after increasing the drift voltage 200V to reach 1.3kV.
  
 
GO BACK [https://wiki.iac.isu.edu/index.php/HM_2014#01.2F11.2F15__2.97kV_GEM]
 
GO BACK [https://wiki.iac.isu.edu/index.php/HM_2014#01.2F11.2F15__2.97kV_GEM]

Latest revision as of 04:24, 16 January 2015

G4 Simulation

01/11/15

Date CATH. Voltage (kV) [math]\Delta[/math] V Shutter source run number Notes
1/11 3.67 700 Open off 8487 CATH3.67 GEM2.97 8488c 8487.png
1/11 3.67 700 Closed off 8488
1/11 3.77 800 Open off 8491 CATH3.1 GEM2.9 8490c 8491.png
1/11 3.77 800 Closed off 8490
1/11 3.87 900 Open off 8492 5' 34" CATH3.87 GEM2.97 8493c 8492.png
1/11 3.87 900 Closed off 8493
1/11 3.97 1k Open off 8495,96 CATH3.97 GEM2.97 8494c 8495.pngCATH3.97 GEM2.97 8497c 8496.png
1/11 3.97 1k Closed off 8494,97
1/11 3.97 1k Open on 8499 100px
1/11 3.97 1k Closed on 8498
1/11 4.07 1.1k Open off 8501 filter amp decreased to from 2x to1x 100px
1/11 4.07 1.1k Closed off 8502
1/11 4.07 1.1k Open on 8504 very low rate 100px
1/11 4.07 1.1k Closed on 8503 very low rate
1/11 4.07 1.1k Open on 8506 GEM decreased from 2.97 to 2.87 kV the rate increased CATH4.07 GEM2.97 8507c 8506.png
1/11 4.07 1.1k Closed on 8507 GEM decreased from 2.97 to 2.87 kV
1/11 4.07 1.1k Open off 8509 GEM decreased from 2.97 to 2.87 kV the rate increased CATH4.07 GEM2.97 8508c 8509.png
1/11 4.07 1.1k Closed off 8508 GEM decreased from 2.97 to 2.87 kV
1/11 4.07 1.1k Open off 8510 GEM decreased from 2.87 to 2.77 kV the rate increased 100px
1/11 4.07 1.1k Closed off 8511 GEM decreased from 2.87 to 2.77 kV
1/11 4.07 1.1k Open on 8513 GEM decreased from 2.87 to 2.77 kV the rate increased 100px
1/11 4.07 1.1k Closed on 8512 GEM decreased from 2.87 to 2.77 kV
1/12 3.87 1.1k Open off 8515 6' GEM 2.77 kV CATH3.87 GEM2.77 8516c 8515.png
1/12 3.87 1.1k Closed off 8516
1/12 3.87 1.1k Open on 8518 GEM 2.77 kV CATH3.87 GEM2.87 8517c 8518.png
1/12 3.87 1.1k Closed on 8517
1/12 3.97 1.1k Open on 8520 GEM 2.87 kV CATH3.97 GEM2.87 8521c 8520.png
1/12 3.97 1.1k Closed on 8521
1/12 3.97 1.1k Open off 8523 6' GEM 2.87 kV CATH3.97 GEM2.87 8522c 8523.png
1/12 3.97 1.1k Closed off 8522 6'
1/13 3.97 1.1k Open off 8524 GEM 2.87 kV CATH3.97 GEM2.87 8526c 8524.png
1/13 3.97 1.1k Closed off 8526
1/13 3.97 1.1k Open on 8528 GEM 2.87 kV CATH3.97 GEM2.87 8527c 8528.png
1/13 3.97 1.1k Closed on 8527
1/13 4.07 1.1k Open on 8529 GEM 2.97 kV CATH4.07 GEM2.97 8530c 8529.png
1/13 4.07 1.1k Closed on 8530
1/13 4.07 1.1k Open off 8532 GEM 2.97 kV CATH4.07 GEM2.97 8532c 8531.png
1/13 4.07 1.1k Closed off 8531
1/14 3.97 1.1k Open off 8533 GEM 2.87 kV CATH3.97 GEM2.87 8534c 8533.png
1/14 3.97 1.1k Closed off 8534
1/14 3.97 1.1k Open on 8536 GEM 2.87 kV CATH3.97 GEM2.87 8535c 8536.png
1/14 3.97 1.1k Closed on 8535
1/14 4.07 1.1k Open on 8537 low rate but a higher charge GEM 2.97 kV CATH4.07 GEM2.97 8538c 8537.png
1/14 4.07 1.1k Closed on 8538 low rate but a higher charge
1/14 4.07 1.1k Open off 8540 low rate but a higher charge GEM 2.97 kV 100px
1/14 4.07 1.1k Closed off 8539 7' low rate but a higher charge
1/14 4.27 1.3k Open off 8542 GEM 2.97 kV CATH4.27 GEM2.97 8543c 8542.png
1/14 4.27 1.3k Closed off 8543

01/13/15

Source on

1.1k all 2.79 2.97 closedon.png

1.1k all 2.79 2.97 openon.png

1.1k all 2.79 2.97 subon.png

Source off

1.1k all 2.79 2.97 closedoff.png

1.1k all 2.79 2.97 openoff.png

1.1k all 2.79 2.97 suboff.png

01/13/15

The figure below shows the difference between open and closed shutter as VGEM=2.97 and VCATH=4.07.

C3.97 G2.87 openonoff 8536 33.png


C4.07 G2.97 openonoff 8540 37.png


The two plots above show a difference as the source is on and when it is off in case of shutter open. But the rate decreases a lot when the GEM voltage increases even after increasing the drift voltage 200V to reach 1.3kV.

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