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|| filter amp decreased to from | + | |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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|1/14||4.07 ||1.1k || Closed || off || 8539|| 7' low rate but a higher charge | |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 [[File:CATH4.27_GEM2.97_8543c_8542.png |100px ]] | ||
+ | |- | ||
+ | |1/14||4.27 ||1.3k || Closed || off || 8543|| | ||
+ | |- | ||
+ | |||
|} | |} | ||
+ | ==01/13/15== | ||
;Source on | ;Source on | ||
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[[File:1.1k_all_2.79_2.97_suboff.png|100px ]] | [[File:1.1k_all_2.79_2.97_suboff.png|100px ]] | ||
+ | ==01/13/15== | ||
+ | |||
+ | The figure below shows the difference between open and closed shutter as VGEM=2.97 and VCATH=4.07. | ||
+ | |||
+ | [[File:C3.97_G2.87_openonoff_8536_33.png|100px]] | ||
+ | |||
+ | |||
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+ | [[File:C4.07_G2.97_openonoff_8540_37.png|100px]] | ||
+ | |||
+ | |||
+ | 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) | V | Shutter | source | run number | Notes |
1/11 | 3.67 | 700 | Open | off | 8487 | ![]() |
1/11 | 3.67 | 700 | Closed | off | 8488 | |
1/11 | 3.77 | 800 | Open | off | 8491 | ![]() |
1/11 | 3.77 | 800 | Closed | off | 8490 | |
1/11 | 3.87 | 900 | Open | off | 8492 | 5' 34" ![]() |
1/11 | 3.87 | 900 | Closed | off | 8493 | |
1/11 | 3.97 | 1k | Open | off | 8495,96 | ![]() ![]() |
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 ![]() |
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 ![]() |
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 ![]() |
1/12 | 3.87 | 1.1k | Closed | off | 8516 | |
1/12 | 3.87 | 1.1k | Open | on | 8518 | GEM 2.77 kV ![]() |
1/12 | 3.87 | 1.1k | Closed | on | 8517 | |
1/12 | 3.97 | 1.1k | Open | on | 8520 | GEM 2.87 kV ![]() |
1/12 | 3.97 | 1.1k | Closed | on | 8521 | |
1/12 | 3.97 | 1.1k | Open | off | 8523 | 6' GEM 2.87 kV ![]() |
1/12 | 3.97 | 1.1k | Closed | off | 8522 | 6' |
1/13 | 3.97 | 1.1k | Open | off | 8524 | GEM 2.87 kV ![]() |
1/13 | 3.97 | 1.1k | Closed | off | 8526 | |
1/13 | 3.97 | 1.1k | Open | on | 8528 | GEM 2.87 kV ![]() |
1/13 | 3.97 | 1.1k | Closed | on | 8527 | |
1/13 | 4.07 | 1.1k | Open | on | 8529 | GEM 2.97 kV ![]() |
1/13 | 4.07 | 1.1k | Closed | on | 8530 | |
1/13 | 4.07 | 1.1k | Open | off | 8532 | GEM 2.97 kV ![]() |
1/13 | 4.07 | 1.1k | Closed | off | 8531 | |
1/14 | 3.97 | 1.1k | Open | off | 8533 | GEM 2.87 kV ![]() |
1/14 | 3.97 | 1.1k | Closed | off | 8534 | |
1/14 | 3.97 | 1.1k | Open | on | 8536 | GEM 2.87 kV ![]() |
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 ![]() |
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 ![]() |
1/14 | 4.27 | 1.3k | Closed | off | 8543 |
01/13/15
- Source on
- Source off
01/13/15
The figure below shows the difference between open and closed shutter as VGEM=2.97 and VCATH=4.07.
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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