hbd meeting 3/14/06 b. azmoun bnl testing and preparation of hbd full scale prototype for upcoming...

HBD Meeting 3/14/06B. AzmounBNLTesting and Preparation of HBD Full Scale Prototype for Upcoming Engineering Run

Puzzling Behavior of GEMsTo Do List

3/14/2006

HBD Prototype GEM Tests: Summary of Previous and New Results

3/14/2006

Iteration 1Source holder configuration:250uCi source (7mm aperture) mounted on Cu clad G-10 panel 1.3cm above mesh. Source holder electrode faces mesh and gets same voltage as upper electrode of top GEM (weak reverse bias field between mesh and source forces conversions back to source holder electrode).Source mounted in center of panel, above intersection of thin G-10 support structure of mesh, GEM, and spacer.

RESULT: low amplitude pulses, @ ~ 10HzDrift field does not change detected rate.Later found short in 3 strips of top GEMtop GEM wasnt functionalSpeculation that low rate and low gain are due to signals form 1st transfer gap.

GEM/Mesh Support structure

3/14/2006

Chart6

9.35

9.1

9.3

9.4

9.2

8.85

9.075

8.8

9.15

10.2166666667

9.75

9.2875

Drift Field [kV/cm]

Detected Rate [Hz]

Iteration 1: Detected Rate Vs. Drift Field

1&2_1 Source(center)

12/7/05

HBD large proto.---large GEM's (~25x25cm)

WIS voltage divider

Jack gas sys./Nickolai gas sys.

HBD noise beat by covering entire detector w/ Al foil

Ch. 30 on PCB

Old Volt Divider: DG ~ 0kV/cm

Iteration 1:PA input cap. [F]

Source in Center of GEM foils0

Gauge

Vin dividerdeltaV(Foil)Ped.PeakFWHMCalib. Ch.Calib. Volt.qvt Cal.Gain% Res.UncertaintyPressure PTemperature T[H2O][O2]Relative Gain

[V][V][ch][ch][ch][ch][V][C/ch.][abs][%]delta(G')[Torr][deg. F][ppm][ppm]

Ar/CO2 70/30

28003470.111.93.314.10.004760140.181691125127.96610169490.974.5??1.00

29003590.120.25.421.80.007160231.728641953826.86567164180.974.5??1.65

30003720.335.69.234.40.01140412.340077586626.06232294620.974.5??2.94

31003840.161.217.659.60.01980710.427567253328.80523731590.974.5??5.07

CF4

4200520.35-0.28029780.00970676.050413960736.15960099752.1574.5??1.00

41005080.218.48.816.80.00580432.146526984648.35164835160.93476.5??

42005200.229.61230.40.01020674.808109038640.81632653060.93476.5??

43005330.2461846.80.015701048.621957390739.30131004370.93476.5??

44005450.278.429780.025901769.158134809937.0843989770.93476.5??

New Volt Divider: DG= 1kV/cm

CF4

38005080.234.214.8320.00570414.158316183643.52941176471.3175??

39005210.225.210.2240.00860613.90509312840.8

40005350.245.619.244.40.015701095.90515418942.2907488987

41005480.273.626.670.80.024901759.261665699336.2397820163

12/19/05CF4 P=0.5'' T = 75.9

4100548184701880.029401955.451449888338.0434782609

New Volt Divider: DG= -3kV/cm

12/19/05

38005080.218.66.6180.00620435.541200410835.86956521740.93475.3??

39005210.232.412.532.60.01080729.414429720238.81987577640.93475.3

40005350.253.624540.017801200.656336565844.94382022470.93475.3

41005480.29235910.0302061.189023158138.12636165580.93475.3

RateVin = 2600I = 104.278DV(foil) = 347.59F1 = 2433.15

2433.2

Mesh volt.Fieldwfmselapsed timeRate [Hz]

30001.8893333333187209.35

27330.9993333333182209.10

26000.556186209.30

2433-0.0006666667188209.40

1800-2.1106666667184209.20

2250-0.6106666667177208.85

25500.3893333333363409.08

1650-2.6106666667176208.80

1500-3.1106666667366409.15

24900.18933333336136010.22

2190-0.8106666667585609.75

foating0743809.29

Iiteration 2:After correcting the mesh voltage on volt. config. spreadsheet (reason why volt. Div. And indep. 7 ch. HV supply gave different results)

2/10/06After replacing top GEM, unsoldering resistors of shorted strips, & unsoldering bottom resistors from foils

New 2R divider powered by LeCroy

Vin dividerdeltaV(Foil)Ped.PeakFWHMCalib. Ch.Calib. Volt.qvt Cal.Gain% Res.DGFilename (Scope_Data)Pressure PTimeRate

2700360`000_ +1kVcmRB_2R_11min_10sec.35"wc11' 10"< 1Hz

2700360000_ -1kV/cmRB_2R_17min_35sec.35"wc17' 35"< 1Hz

27003600476944840.15805429.365120617319.7478991597_ +2kV/cmFB_2R_17min_35sec.8"wc~30min~1Hz

27003600408964200.14204819.806329240323.5294117647_ +1.5FB_2R_1.5kV_cm_2_16_06.7"wc__

All electrodes powered independently w/ LeCroy

-36006561886560.21707582.110412299128.6585365854_ +1kVcmFB_LC_10min_00sec.35"wc10' 00"~1Hz

-36001120.392000_ -1kV/cmRB_LC_10min_00sec.35"wc9' 30" Conditioned!!

F3/R13:0.06nS.01nA @450V

Center: Pad Ch. 30

Vin = 2700 (I=108.9uA)

2R volt div.removed "bottom" resistors on volt. Divider, applied voltage (2700) --> low rate ~ (54/90)=0.6 Hz, peak=405mV, I=108.9uA

2R volt div.peak = 8.25mV, Rate = (2135/70) = 30.5Hz (rate of larger amp. Pulses much lower)

same results w/ independent supply...

LeCroy 7ch.peak = 425mV, Rate = (45/60) = .75Hz

LeCroy 7ch.peak = 8.5mV, Rate = (1910/60) = 31.83Hz (rate of larger amplitude pulses is much lower)

Vin = 2800 (I=112.9uA)

2R volt. Div. (Low Amp)peak = 14.7mvRate = 1850/60 = 30.8HzFilename:Lw_Amp_aft trp__ch30_2800_FB1kV_3_10_06

2R volt. Div. (Large Amp)peak = 1060mVRate = 514/600=0.86HzFilename:Lg_Amp_aft trp__ch30_2800_FB1kV_3_10_06

Gain of small amp pulses

VindeltaV(Foil)Ped.PeakFWHMcalib. Chcalib. Volt.CalibGain

[V][V][ch][ch][ch][ch][V][C/ch.][abs]

2700347.59358288770.159.214.80.004760102.742062044

2800374.330.1514.714.80.004760165.1819892531

Gain of Large amp pulses



2700347.59358288770.154255880.19204848.4251943933

2800374.330.15106015600.514012202.6753320522

Quadrant: ch.49

Vin = 2700 (I=108.9uA)

LeCroypeak=8.5mVrate= 1625/60 = 27.1Hz (No larger amplitude pulses observed-> rate < 0.1Hz)

2R div.peak=8.6mVrate= 1570/60 = 26.2Hz (No larger amplitude pulses observed -> rate < 0.1Hz)

Vin = 2800 (I=112.9uA)

2R volt. Divpeak = 15.5mVRate= 6567/240 = 27.4HzFilename:aft_trp_ch49_2800_FB1kV_3_10_06

(larger amp. Pulses rate same results

low amp pulsespeak = 15.2mVRate= 920/30 = 30.7Hz

High amp pulsespeak = 1100mVRate= 70/90 = 0.78Hz

Leakage Current II

Z-1ILC

F1/R1:0.06nS13.2nA @450V, LeCroy HV -> no current draw

F2/R2:0.02nS0.1nA @ 450V

F3/R13:0.04nS0.1nA @ 450V

After Leakage current and Impedance Check, detector started to behave normally again: the Rate Returned (30Hz, high amp.), once voltage was applied to volt divider!!! (NO TRIP OCCURRED)

Low amp./ high rate (30Hz) pulses Disappeared!

2R volt. Div.

Vin =2700 (I= 108.9uA)as earlier

ch. 30peak = 592mV (as earlier)Rate= 1870/60 =31.25Hzlow pulses have rate ~2-3Hz and don't seem to be a part of a Fe55 Spectrum

ch. 49peak = 620mVRate= 1727/60 = 28.8Hzlow pulses have rate ~2-3Hz and don't seem to be a part of a Fe55 Spectrum

Looks like whatever happens to center pad, also happens to the quadrant pad--> therefore the performance of the det. is independent of the pad position

trial 2: after trip (2R volt Div.)

baseline noise sigma0.7mV (50ohm)P=1.1"WC

baseline mean (ped)0.2mV (50ohm)T=79.8deg F (room)

Center: Pad Ch. 30

VindeltaV(foil)Ped.PeakFWHMCalib. Ch.Calib. Volt.qvt Cal.Gain% Res.DGFilenameI(stndg)CountsElapsed TimeRateNotesNo H20, O2 analyzers connected

[V][V][ch][ch][ch][ch][V][C/ch.][abs][%][uA][sec][Hz]

2500334.220.210530990.03201185.999994341628.6259541985+1kV/cm100.88903029.6666666667

2600347.590.2252612440.07802814.796470282724.2255758539+1kV/cm104.97673025.5666666667

2700360.960.25921805880.19206754.247619129130.4156809733+1kV/cmok_ch30_FB1kV_2700_3_10_06108.98903029.6666666667

2800374.330.2155046015600.514017844.329340723429.6812491934+1kV/cm112.915136025.2166666667

Quadrant: Pad Ch. 49


2500334.220.210062990.03201129.416025145962.124248497+1kV/cm100.87653025.5

2600347.590.22741102440.07803060.727853706940.1753104456+1kV/cm104.913456022.4166666667

2700360.960.27083205880.19208078.162326494845.2105114439+1kV/cmok_ch49_FB1kV_2700_3_10_06108.96983023.2666666667

2800374.330.2sat. PA @ 2.0V out0.514-000+1kV/cm112.9242010024.2

RATE

Rate Measurement: Ch. 30 , Vin=2700V, 2R Volt Div.DG = 3mm

Trigger = 100.0mV

DG Field [kV/cm]FieldCountsElapsed TimeRate [Hz]Main peak ch.escape peak ch.Pulse Rise TimeTriggerNotesFilename

[sec](nsec)

+337953026.561244.8100mVhigh amp pulses


+0.50.512266020.433333333348069.6100mVhigh amp pulses

+0.20.2103310010.33320?25 - 200100mVhigh amp pulses

+0.10.16461205.3833333333132?65-300100mVhigh amp pulsesHigh trigger level is truncating spectrum: peak is uncertain

0.00190603.1666666667128?56100mVhigh amp pulses1/10 of the rate in FB-->150micron layer above top GEM

-0.1-0.1187603.116666666796?44.5100mVhigh amp pulsesrate_RB0.1kV_ch30_2700_3_10_06

-0.3-0.3207702.9571428571100?42.5100mVhigh amp pulses

-1-1183603.0540-400mV42.5100mVhigh amp pulses

-0.3-0.3396904.440 - 400mV4240mVhigh amp pulsestrigger set just above low amp pulses to get better idea of peak position

maybe only count pulses around 400mV (same pulse amp in FB)trig40mV_RB0.3kV_ch30_2700_3_10_06

Change Trigger level to see low amplitude pulses from 1st Transfer gap

0.00168512014.041666666738.0?42.45.5mVlow1st Transfer gap ratetrig5.5mV_0kV_ch30_2700_3_10_06

-0.3-0.3171012014.2538.2?42.55.5mVlow1st Transfer gap ratetrig5.5mV_RB.3kV_ch30_2700_3_10_06

Analysis: low amp pulses

Gain

VindeltaV(foil)Ped.PeakFWHMCalib. Ch.Calib. Volt.qvt Cal.Gain


2700360.960.238?39.20.01270430.091920658--> gain, less one stage of mult.

Rate of Pulses in 1st Transfer gap

Rate (trig=5.5mV) - Rate(trig=100mV) = 14.25 - 2.96 = 11.29Hz

RATE


Trigger = 100.0mV

DG Field [kV/cm]FieldCountsElapsed TimeRate [Hz]Main peak ch.escape peak ch.Pulse Rise TimeTriggerNotes

[sec](nsec)




+0.20.212336020.55628128100mVhigh amp pulses

+0.10.15303017.6666666667404100 - 270100mVhigh amp pulsesHigh trigger level is truncating spectrum: peak is uncertain

0.00189603.15128?52.8100mVhigh amp pulses1/10 of the rate in FB-->150micron layer above top GEM



-1-1188603.1333333333100?42.5100mVhigh amp pulses





Gain



2700360.960.244.2?39.20.01270500.6360981204--> gain, less one stage of mult.



Rate Map: +1kV/cmIncludes channels near both sources

Vin =2700, deltaV=361V

Trigger = 60mV

Ch.CountsElapsed Time [sec]Rate [Hz]peak [mV]

307703025.758050ohm on scope

225300.2?50ohm on scope


34419607.048450ohm on scope













35227603.844850ohm on scope

396363021.264450ohm on scope



54142304.748450ohm on scope

586363021.266850ohm on scope



496753022.573250ohm on scope

53100303.348850ohm on scope


140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561126.446684472177.708853852600000

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063221.2192975645291.87048683900000

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122416.9578383415000

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816000

9207.976432421113629.1083778383

T = 23CP = 0.94 TorrSource: 55Fe

Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)

Ar/CO2 LeCroy (DG=+1kV/cm)

Ar/CO2 2R Divider (DG=+1kV/cm)

Test Set-Up (Std. CERN) Ar/CO2 (LeCroy HV

Volt Div./source in frame quadrant cntr

Iteration 4 (ch. 30)


Iteration 5 (ch30) Before Trip

Iteration 5 (ch30) After Trip (Normal Behavior)

Itreration 5 (Ch49) After Trip (Normal Behavior)

Iteration 5 (ch30) sm pulses (Irregular Behavior, 30Hz)

Iteration 5 (Ch30) Lg pulses (Irregular Behavior, 1Hz)

DVFoil [V]

Absolute Gain

Gain Vs DVFoil: HBD Full Size Prototype (PCB Ch. 30)

00

00

00

00

00

00

00

00

00

Ch 49

Ch 30

140.1816911251432.1465269846414.1583161836435.5412004108

231.7286419538674.8081090386613.905093128729.4144297202

412.34007758661048.62195739071095.9051541891200.6563365658

710.42756725331769.15813480991759.26166569932061.1890231581


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)

DVFoil [V]

Absolute Gain


0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

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3

6

6

9

8

16

21

26

33

56

45

40

36

30

16

11

10

14

18

10

5

6

4

9

4

2

6

4

7

7

9

8

6

10

8

5

1

3

2

0

0

2

0

2

3

2

13

3

2

0

0

1

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1

1

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2

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1

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1

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1

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0

0

0

0

DVFoil = 360VGain = ?Rate 150micron layer above top GEM










Gain





RATE

DG = 3mm

Trigger = 100.0mV


[sec](nsec)














Gain







Trigger = 60mV


307703025.758050ohm on scope



34419607.048450ohm on scope













35227603.844850ohm on scope

396363021.264450ohm on scope



54142304.748450ohm on scope

586363021.266850ohm on scope



496753022.573250ohm on scope

53100303.348850ohm on scope


140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561126.446684472177.7088538526

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063221.2192975645291.870486839

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122416.9578383415

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816

9207.976432421113629.1083778383


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)












DVFoil [V]

Absolute Gain


Ch 49

Ch 30

140.1816911251432.1465269846414.1583161836435.5412004108

231.7286419538674.8081090386613.905093128729.4144297202

412.34007758661048.62195739071095.9051541891200.6563365658

710.42756725331769.15813480991759.26166569932061.1890231581


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)

DVFoil [V]

Absolute Gain


0

0

0

0

0

0

0

0

0

0

0

0

0

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16

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33

56

45

40

36

30

16

11

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14

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10

5

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9

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2

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8

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13

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1

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2

4

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0

0

DVFoil = 360VGain = ?Rate

Iteration 2Replaced top (shorted GEM), otherwise same configuration.RESULT: Irregular BehaviorNormal GainDetected Rate ~ 1Hz (+1kV/cm)Compared Results to Standard Triple GEM Set-Up comprised of 10x10cm Segmented CERN foils (the same field configuration was applied)

Fe-55NOTE: In reverse bias, the pulse height amplitude drops by several factors in all cases, and a significant number of pulses are at the level of the noise. Also, positive-going-ringing-pulses (from micro-discharges?) are detected at a rate of a fraction of a Hz. Thus, these additional pulses impose large errors on rate measurements at levels below a Hz .Low Rate measurements depend strongly on the threshold applied.

3/14/2006

Chart10

140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.9962503891

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.6112306126

9207.9764324211

Iteration 2:

Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)



Test Set-Up (Std. CERN) Ar/CO2 (LeCroy HV)

DVFoil [V]

Absolute Gain



12/7/05


WIS voltage divider



Ch. 30 on PCB




Gauge



Ar/CO2 70/30

28003470.111.93.314.10.004760140.181691125127.96610169490.974.5??1.00

29003590.120.25.421.80.007160231.728641953826.86567164180.974.5??1.65

30003720.335.69.234.40.01140412.340077586626.06232294620.974.5??2.94

31003840.161.217.659.60.01980710.427567253328.80523731590.974.5??5.07

CF4

4200520.35-0.28029780.00970676.050413960736.15960099752.1574.5??1.00

41005080.218.48.816.80.00580432.146526984648.35164835160.93476.5??

42005200.229.61230.40.01020674.808109038640.81632653060.93476.5??

43005330.2461846.80.015701048.621957390739.30131004370.93476.5??

44005450.278.429780.025901769.158134809937.0843989770.93476.5??


CF4

38005080.234.214.8320.00570414.158316183643.52941176471.3175??

39005210.225.210.2240.00860613.90509312840.8

40005350.245.619.244.40.015701095.90515418942.2907488987

41005480.273.626.670.80.024901759.261665699336.2397820163

12/19/05CF4 P=0.5'' T = 75.9

4100548184701880.029401955.451449888338.0434782609


12/19/05

38005080.218.66.6180.00620435.541200410835.86956521740.93475.3??

39005210.232.412.532.60.01080729.414429720238.81987577640.93475.3

40005350.253.624540.017801200.656336565844.94382022470.93475.3

41005480.29235910.0302061.189023158138.12636165580.93475.3


2433.2


30001.8893333333187209.35

27330.9993333333182209.10

26000.556186209.30

2433-0.0006666667188209.40

1800-2.1106666667184209.20

2250-0.6106666667177208.85

25500.3893333333363409.08

1650-2.6106666667176208.80

1500-3.1106666667366409.15

24900.18933333336136010.22

2190-0.8106666667585609.75

foating0743809.29








27003600408964200.14204819.806329240323.5294117647_ +1.5FB_2R_1.5kV_cm_2_16_06.7"wc__



-36001120.392000_ -1kV/cmRB_LC_10min_00sec.35"wc9' 30" low rate ~ (54/90)=0.6 Hz, peak=405mV, I=108.9uA





Vin = 2800 (I=112.9uA)






2700347.59358288770.159.214.80.004760102.742062044

2800374.330.1514.714.80.004760165.1819892531




2700347.59358288770.154255880.19204848.4251943933

2800374.330.15106015600.514012202.6753320522

Quadrant: ch.49

Vin = 2700 (I=108.9uA)



Vin = 2800 (I=112.9uA)





Leakage Current II


F2/R2:0.02nS0.1nA @ 450V

F3/R13:0.04nS0.1nA @ 450V



2R volt. Div.








Center: Pad Ch. 30



2500334.220.210530990.03201185.999994341628.6259541985+1kV/cm100.88903029.6666666667

2600347.590.2252612440.07802814.796470282724.2255758539+1kV/cm104.97673025.5666666667

2700360.960.25921805880.19206754.247619129130.4156809733+1kV/cmok_ch30_FB1kV_2700_3_10_06108.98903029.6666666667

2800374.330.2155046015600.514017844.329340723429.6812491934+1kV/cm112.915136025.2166666667



2500334.220.210062990.03201129.416025145962.124248497+1kV/cm100.87653025.5

2600347.590.22741102440.07803060.727853706940.1753104456+1kV/cm104.913456022.4166666667

2700360.960.27083205880.19208078.162326494845.2105114439+1kV/cmok_ch49_FB1kV_2700_3_10_06108.96983023.2666666667

2800374.330.2sat. PA @ 2.0V out0.514-000+1kV/cm112.9242010024.2

RATE

DG = 3mm

Trigger = 100.0mV


[sec](nsec)
















Gain





RATE

DG = 3mm

Trigger = 100.0mV


[sec](nsec)














Gain







Trigger = 60mV


307703025.758050ohm on scope



34419607.048450ohm on scope













35227603.844850ohm on scope

396363021.264450ohm on scope



54142304.748450ohm on scope

586363021.266850ohm on scope



496753022.573250ohm on scope

53100303.348850ohm on scope


140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561126.446684472177.7088538526

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063221.2192975645291.870486839

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122416.9578383415

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816

9207.976432421113629.1083778383


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)












DVFoil [V]

Absolute Gain


Ch 49

Ch 30

140.1816911251432.1465269846414.1583161836435.5412004108

231.7286419538674.8081090386613.905093128729.4144297202

412.34007758661048.62195739071095.9051541891200.6563365658

710.42756725331769.15813480991759.26166569932061.1890231581


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)

DVFoil [V]

Absolute Gain


0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3

6

6

9

8

16

21

26

33

56

45

40

36

30

16

11

10

14

18

10

5

6

4

9

4

2

6

4

7

7

9

8

6

10

8

5

1

3

2

0

0

2

0

2

3

2

13

3

2

0

0

1

0

0

1

1

2

2

3

2

4

0

1

0

2

2

3

0

1

0

0

3

1

0

0

0

1

1

2

0

0

0

0

0

0

3

1

2

1

2

2

1

1

2

1

0

0

0

1

2

0

5

1

0

0

1

0

1

0

3

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

0

3

1

0

0

0

0

0

0

0

0











Gain






RATE


Trigger = 100.0mV


[sec](nsec)














Gain








Trigger = 60mV


307703025.758050ohm on scope



34419607.048450ohm on scope













35227603.844850ohm on scope

396363021.264450ohm on scope



54142304.748450ohm on scope

586363021.266850ohm on scope



496753022.573250ohm on scope

53100303.348850ohm on scope


140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561126.446684472177.708853852600000

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063221.2192975645291.87048683900000

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122416.9578383415000

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816000

9207.976432421113629.1083778383


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)












DVFoil [V]

Absolute Gain


00

00

00

00

00

00

00

00

00

Ch 49

Ch 30

140.1816911251432.1465269846414.1583161836435.5412004108

231.7286419538674.8081090386613.905093128729.4144297202

412.34007758661048.62195739071095.9051541891200.6563365658

710.42756725331769.15813480991759.26166569932061.1890231581


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)

DVFoil [V]

Absolute Gain


0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3

6

6

9

8

16

21

26

33

56

45

40

36

30

16

11

10

14

18

10

5

6

4

9

4

2

6

4

7

7

9

8

6

10

8

5

1

3

2

0

0

2

0

2

3

2

13

3

2

0

0

1

0

0

1

1

2

2

3

2

4

0

1

0

2

2

3

0

1

0

0

3

1

0

0

0

1

1

2

0

0

0

0

0

0

3

1

2

1

2

2

1

1

2

1

0

0

0

1

2

0

5

1

0

0

1

0

1

0

3

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

0

3

1

0

0

0

0

0

0

0

0


Iteration 3Source placed in center of 1 quadrant.RESULT: Normal BehaviorNormal GainDetected Rate ~ 30Hz (+1kV/cm)Speculation: thin G-10 support structure is imposing space charge that does not affect operation of the GEM when source is placed in the center of 1 quadrant.

Fe-55

3/14/2006

Chart12

140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816

9207.976432421113629.1083778383

Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)




Iteration 3: source in quadrant

DVFoil [V]

Absolute Gain



12/7/05


WIS voltage divider



Ch. 30 on PCB




Gauge



Ar/CO2 70/30

28003470.111.93.314.10.004760140.181691125127.96610169490.974.5??1.00

29003590.120.25.421.80.007160231.728641953826.86567164180.974.5??1.65

30003720.335.69.234.40.01140412.340077586626.06232294620.974.5??2.94

31003840.161.217.659.60.01980710.427567253328.80523731590.974.5??5.07

CF4

4200520.35-0.28029780.00970676.050413960736.15960099752.1574.5??1.00

41005080.218.48.816.80.00580432.146526984648.35164835160.93476.5??

42005200.229.61230.40.01020674.808109038640.81632653060.93476.5??

43005330.2461846.80.015701048.621957390739.30131004370.93476.5??

44005450.278.429780.025901769.158134809937.0843989770.93476.5??


CF4

38005080.234.214.8320.00570414.158316183643.52941176471.3175??

39005210.225.210.2240.00860613.90509312840.8

40005350.245.619.244.40.015701095.90515418942.2907488987

41005480.273.626.670.80.024901759.261665699336.2397820163

12/19/05CF4 P=0.5'' T = 75.9

4100548184701880.029401955.451449888338.0434782609


12/19/05

38005080.218.66.6180.00620435.541200410835.86956521740.93475.3??

39005210.232.412.532.60.01080729.414429720238.81987577640.93475.3

40005350.253.624540.017801200.656336565844.94382022470.93475.3

41005480.29235910.0302061.189023158138.12636165580.93475.3


2433.2


30001.8893333333187209.35

27330.9993333333182209.10

26000.556186209.30

2433-0.0006666667188209.40

1800-2.1106666667184209.20

2250-0.6106666667177208.85

25500.3893333333363409.08

1650-2.6106666667176208.80

1500-3.1106666667366409.15

24900.18933333336136010.22

2190-0.8106666667585609.75

foating0743809.29








27003600408964200.14204819.806329240323.5294117647_ +1.5FB_2R_1.5kV_cm_2_16_06.7"wc__



-36001120.392000_ -1kV/cmRB_LC_10min_00sec.35"wc9' 30" Conditioned!!

F3/R13:0.06nS.01nA @450V

Center: Pad Ch. 30

Vin = 2700 (I=108.9uA)

2R volt div.removed "bottom" resistors on volt. Divider, applied voltage (2700) --> low rate ~ (54/90)=0.6 Hz, peak=405mV, I=108.9uA





Vin = 2800 (I=112.9uA)






2700347.59358288770.159.214.80.004760102.742062044

2800374.330.1514.714.80.004760165.1819892531




2700347.59358288770.154255880.19204848.4251943933

2800374.330.15106015600.514012202.6753320522

Quadrant: ch.49

Vin = 2700 (I=108.9uA)



Vin = 2800 (I=112.9uA)





Leakage Current II

Z-1ILC


F2/R2:0.02nS0.1nA @ 450V

F3/R13:0.04nS0.1nA @ 450V



2R volt. Div.








Center: Pad Ch. 30



2500334.220.210530990.03201185.999994341628.6259541985+1kV/cm100.88903029.6666666667

2600347.590.2252612440.07802814.796470282724.2255758539+1kV/cm104.97673025.5666666667

2700360.960.25921805880.19206754.247619129130.4156809733+1kV/cmok_ch30_FB1kV_2700_3_10_06108.98903029.6666666667

2800374.330.2155046015600.514017844.329340723429.6812491934+1kV/cm112.915136025.2166666667



2500334.220.210062990.03201129.416025145962.124248497+1kV/cm100.87653025.5

2600347.590.22741102440.07803060.727853706940.1753104456+1kV/cm104.913456022.4166666667

2700360.960.27083205880.19208078.162326494845.2105114439+1kV/cmok_ch49_FB1kV_2700_3_10_06108.96983023.2666666667

2800374.330.2sat. PA @ 2.0V out0.514-000+1kV/cm112.9242010024.2

RATE


Trigger = 100.0mV


[sec](nsec)
















Gain






RATE


Trigger = 100.0mV


[sec](nsec)














Gain








Trigger = 60mV


307703025.758050ohm on scope



34419607.048450ohm on scope













35227603.844850ohm on scope

396363021.264450ohm on scope



54142304.748450ohm on scope

586363021.266850ohm on scope



496753022.573250ohm on scope

53100303.348850ohm on scope


140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561126.446684472177.708853852600000

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063221.2192975645291.87048683900000

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122416.9578383415000

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816000

9207.976432421113629.1083778383


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)












DVFoil [V]

Absolute Gain


00

00

00

00

00

00

00

00

00

Ch 49

Ch 30

140.1816911251432.1465269846414.1583161836435.5412004108

231.7286419538674.8081090386613.905093128729.4144297202

412.34007758661048.62195739071095.9051541891200.6563365658

710.42756725331769.15813480991759.26166569932061.1890231581


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)

DVFoil [V]

Absolute Gain


0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3

6

6

9

8

16

21

26

33

56

45

40

36

30

16

11

10

14

18

10

5

6

4

9

4

2

6

4

7

7

9

8

6

10

8

5

1

3

2

0

0

2

0

2

3

2

13

3

2

0

0

1

0

0

1

1

2

2

3

2

4

0

1

0

2

2

3

0

1

0

0

3

1

0

0

0

1

1

2

0

0

0

0

0

0

3

1

2

1

2

2

1

1

2

1

0

0

0

1

2

0

5

1

0

0

1

0

1

0

3

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

0

3

1

0

0

0

0

0

0

0

0











Gain






RATE


Trigger = 100.0mV


[sec](nsec)














Gain








Trigger = 60mV


307703025.758050ohm on scope



34419607.048450ohm on scope













35227603.844850ohm on scope

396363021.264450ohm on scope



54142304.748450ohm on scope

586363021.266850ohm on scope



496753022.573250ohm on scope

53100303.348850ohm on scope


140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561126.446684472177.708853852600000

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063221.2192975645291.87048683900000

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122416.9578383415000

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816000

9207.976432421113629.1083778383


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)












DVFoil [V]

Absolute Gain


00

00

00

00

00

00

00

00

00

Ch 49

Ch 30

140.1816911251432.1465269846414.1583161836435.5412004108

231.7286419538674.8081090386613.905093128729.4144297202

412.34007758661048.62195739071095.9051541891200.6563365658

710.42756725331769.15813480991759.26166569932061.1890231581


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)

DVFoil [V]

Absolute Gain


0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3

6

6

9

8

16

21

26

33

56

45

40

36

30

16

11

10

14

18

10

5

6

4

9

4

2

6

4

7

7

9

8

6

10

8

5

1

3

2

0

0

2

0

2

3

2

13

3

2

0

0

1

0

0

1

1

2

2

3

2

4

0

1

0

2

2

3

0

1

0

0

3

1

0

0

0

1

1

2

0

0

0

0

0

0

3

1

2

1

2

2

1

1

2

1

0

0

0

1

2

0

5

1

0

0

1

0

1

0

3

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

0

3

1

0

0

0

0

0

0

0

0


Iteration 4Installed source holder with 2 sources, 1 in quadrant, 1 in center.Removed mesh and 1.5mm spacer source holder panel- electrode establishes drift field in place of mesh.RESULT: Irregular BehaviorLow GainNormal Rate (30Hz @ 1kV/cm)Drift Field has expected impact on rateSame results for both sources

Fe-55 Top GEM has Leakage Current: I =5.0nA, but shows ~100Gohm of impedance. Towards the end of the test the top GEM tripped and developed a 25Mohm short in 1 strip.

3/14/2006

Chart14

140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561126.446684472177.7088538526

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063221.2192975645291.870486839

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122416.9578383415

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816

9207.976432421113629.1083778383

Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)






Iteration 4: ch. 49

DVFoil [V]

Absolute Gain

Gain Vs DVFoil: HBD Full Size Prototype (PCB Ch. 30, 49)


12/7/05


WIS voltage divider



Ch. 30 on PCB




Gauge



Ar/CO2 70/30

28003470.111.93.314.10.004760140.181691125127.96610169490.974.5??1.00

29003590.120.25.421.80.007160231.728641953826.86567164180.974.5??1.65

30003720.335.69.234.40.01140412.340077586626.06232294620.974.5??2.94

31003840.161.217.659.60.01980710.427567253328.80523731590.974.5??5.07

CF4

4200520.35-0.28029780.00970676.050413960736.15960099752.1574.5??1.00

41005080.218.48.816.80.00580432.146526984648.35164835160.93476.5??

42005200.229.61230.40.01020674.808109038640.81632653060.93476.5??

43005330.2461846.80.015701048.621957390739.30131004370.93476.5??

44005450.278.429780.025901769.158134809937.0843989770.93476.5??


CF4

38005080.234.214.8320.00570414.158316183643.52941176471.3175??

39005210.225.210.2240.00860613.90509312840.8

40005350.245.619.244.40.015701095.90515418942.2907488987

41005480.273.626.670.80.024901759.261665699336.2397820163

12/19/05CF4 P=0.5'' T = 75.9

4100548184701880.029401955.451449888338.0434782609


12/19/05

38005080.218.66.6180.00620435.541200410835.86956521740.93475.3??

39005210.232.412.532.60.01080729.414429720238.81987577640.93475.3

40005350.253.624540.017801200.656336565844.94382022470.93475.3

41005480.29235910.0302061.189023158138.12636165580.93475.3


2433.2


30001.8893333333187209.35

27330.9993333333182209.10

26000.556186209.30

2433-0.0006666667188209.40

1800-2.1106666667184209.20

2250-0.6106666667177208.85

25500.3893333333363409.08

1650-2.6106666667176208.80

1500-3.1106666667366409.15

24900.18933333336136010.22

2190-0.8106666667585609.75

foating0743809.29








27003600408964200.14204819.806329240323.5294117647_ +1.5FB_2R_1.5kV_cm_2_16_06.7"wc__



-36001120.392000_ -1kV/cmRB_LC_10min_00sec.35"wc9' 30" low rate ~ (54/90)=0.6 Hz, peak=405mV, I=108.9uA





Vin = 2800 (I=112.9uA)






2700347.59358288770.159.214.80.004760102.742062044

2800374.330.1514.714.80.004760165.1819892531




2700347.59358288770.154255880.19204848.4251943933

2800374.330.15106015600.514012202.6753320522

Quadrant: ch.49

Vin = 2700 (I=108.9uA)



Vin = 2800 (I=112.9uA)





Leakage Current II


F2/R2:0.02nS0.1nA @ 450V

F3/R13:0.04nS0.1nA @ 450V



2R volt. Div.








Center: Pad Ch. 30



2500334.220.210530990.03201185.999994341628.6259541985+1kV/cm100.88903029.6666666667

2600347.590.2252612440.07802814.796470282724.2255758539+1kV/cm104.97673025.5666666667

2700360.960.25921805880.19206754.247619129130.4156809733+1kV/cmok_ch30_FB1kV_2700_3_10_06108.98903029.6666666667

2800374.330.2155046015600.514017844.329340723429.6812491934+1kV/cm112.915136025.2166666667



2500334.220.210062990.03201129.416025145962.124248497+1kV/cm100.87653025.5

2600347.590.22741102440.07803060.727853706940.1753104456+1kV/cm104.913456022.4166666667

2700360.960.27083205880.19208078.162326494845.2105114439+1kV/cmok_ch49_FB1kV_2700_3_10_06108.96983023.2666666667

2800374.330.2sat. PA @ 2.0V out0.514-000+1kV/cm112.9242010024.2

RATE

DG = 3mm

Trigger = 100.0mV


[sec](nsec)
















Gain





RATE

DG = 3mm

Trigger = 100.0mV


[sec](nsec)














Gain







Trigger = 60mV


307703025.758050ohm on scope



34419607.048450ohm on scope













35227603.844850ohm on scope

396363021.264450ohm on scope



54142304.748450ohm on scope

586363021.266850ohm on scope



496753022.573250ohm on scope

53100303.348850ohm on scope


140.1816911251432.1465269846414.1583161836435.5412004108761.4555256065776.8719103454661.686441516362.0181139561126.446684472177.7088538526

231.7286419538674.8081090386613.905093128729.41442972021814.42233135181838.362126157717074.875995023784.5940516063221.2192975645291.870486839

412.34007758661048.62195739071095.9051541891200.65633656584565.80596904864634.74719239921360.99625038912029.8253228122416.9578383415

710.42756725331769.15813480991759.26166569932061.189023158111249.235674353611658.28092243192525.61123061265090.6437745816

9207.976432421113629.1083778383


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)












DVFoil [V]

Absolute Gain


Ch 49

Ch 30

140.1816911251432.1465269846414.1583161836435.5412004108

231.7286419538674.8081090386613.905093128729.4144297202

412.34007758661048.62195739071095.9051541891200.6563365658

710.42756725331769.15813480991759.26166569932061.1890231581


Ar/CO2 (70/30) (DG ~ 0kV/cm)

CF4 (DG ~ 0kV/cm)

CF4 (DG = 1kV/cm)

CF4 (DG = -3kV/cm)

DVFoil [V]

Absolute Gain


0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3

6

6

9

8

16

21

26

33

56

45

40

36

30

16

11

10

14

18

10

5

6

4

9

4

2

6

4

7

7

9

8

6

10

8

5

1

3

2

0

0

2

0

2

3

2

13

3

2

0

0

1

0

0

1

1

2

2

3

2

4

0

1

0

2

2

3

0

1

0

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3

1

0

0

0

1

1

2

0

0

0

0

0

0

3

1

2

1

2

2

1

1

2

1

0

0

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1

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0

5

1

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1

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0

0

0

0

0

0











Gain






RATE


Trigger = 100.0mV


[sec](nsec)














Gain








Trigger = 60mV

Ch.CountsElapsed Time [sec]Rate [Hz]pea

hbd meeting 3/14/06 b. azmoun bnl testing and preparation of hbd full scale prototype for upcoming...

Documents

mesh voltage

source holder electrode

new volt divider

low rate

uci source

source holder configuration

pcbold volt divider

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