Difference between revisions of "MiniPrototype SinglesCosmicRuns 2008"
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|Guard || 725 | |Guard || 725 | ||
|}<br> | |}<br> | ||
− | |||
− | |||
− | |||
'''Scope pictures representing the cosmic signals from Plastika and Metalica(Amplifier is connected)'''<br> | '''Scope pictures representing the cosmic signals from Plastika and Metalica(Amplifier is connected)'''<br> | ||
Line 87: | Line 84: | ||
|Guard || 725 | |Guard || 725 | ||
|}<br> | |}<br> | ||
+ | |||
+ | The scope picture below was taken to illustrate the noise levels on the DC signals after amplification just before disrimination. Previous measurements suggested that the sense wire signal noise had an RMS of about 10 mV. The phillips amplifier doubles this noise RMS. The amplitude of the noise is about 30 mV. | ||
+ | |||
+ | |||
+ | [[Image:BabyChamberAfterPhillipsAmp_5-12-08.png | 200 px]] | ||
{| border="1" |cellpadding="20" cellspacing="0 | {| border="1" |cellpadding="20" cellspacing="0 | ||
Line 92: | Line 94: | ||
|Threshold (mV) || Metalica (Events/hr) || Plastika (Events/hr) || Coincidence (Event/hr) | |Threshold (mV) || Metalica (Events/hr) || Plastika (Events/hr) || Coincidence (Event/hr) | ||
|- | |- | ||
− | | 100 || 1915 || 1912 || | + | | 100 || 1915 || 1912 || 90 |
+ | |- | ||
+ | | 100 || 2148 || 1799 || 36 | ||
|- | |- | ||
− | | 100 || | + | | 100 || 1885 || 1758 || 37 |
|- | |- | ||
− | | 100 || | + | | 100 || 2012 || 1912 || 91 |
|- | |- | ||
− | | 100 || | + | | 100 || 1905 || 1754 || 25 |
|- | |- | ||
− | | | + | | 150 || 671 || 588 || 14 |
|- | |- | ||
− | | 150 || | + | | 150 || 645 || 596 || 11 |
|- | |- | ||
− | | 150 || | + | | 150 || 634 || 596 || 19 |
|- | |- | ||
− | | 150 || | + | | 150 || 629 || 563 || 13 |
|- | |- | ||
− | | 150 || | + | | 150 || 634 || 550 || 5 |
|- | |- | ||
− | | | + | | 175 || 361 || 358 || 20 |
|- | |- | ||
− | | 175 || | + | | 175 || 380 || 329 || 14 |
|- | |- | ||
− | | 175 || | + | | 175 || 396 || 329 || 14 |
|- | |- | ||
− | | 175 || | + | | 175 || 391 || 344 || 10 |
|- | |- | ||
− | | | + | | 200 || 286 || 256 || 25 |
|- | |- | ||
− | | 200 || | + | | 200 || 291 || 232 || 4 |
|- | |- | ||
− | | 200 || 291 || | + | | 200 || 291 || 251 || 6 |
|- | |- | ||
− | | | + | | 225 || 183 || 168 || 4 |
|- | |- | ||
− | | 225 || | + | | 225 || 193 || 180 || 6 |
|- | |- | ||
− | | | + | | 250 || 122 || 120 || 2 |
|- | |- | ||
− | | | + | | 300 || 93 || 88 || 2 |
|- | |- | ||
− | | | + | | 350 || 74 || 60 || 3 |
|- | |- | ||
|}<br> | |}<br> | ||
Line 148: | Line 152: | ||
| 200 || <math>289 \pm 2</math> || <math>246 \pm 10</math> || | | 200 || <math>289 \pm 2</math> || <math>246 \pm 10</math> || | ||
|- | |- | ||
− | | 225 || <math>188 \pm 5</math> || <math> | + | | 225 || <math>188 \pm 5</math> || <math>174 \pm 6</math> || |
|- | |- | ||
| 250 || 122 || 120 || | | 250 || 122 || 120 || | ||
|- | |- | ||
+ | | 300 || 93 || 88 || | ||
+ | |- | ||
+ | | 350 || 74 || 60 || | ||
+ | |- | ||
+ | |}<br> | ||
+ | |||
+ | |||
+ | [[Image:Discriminator_threshold_vs_rate_for_plastika_phillips_model_777.jpg|400px]][[Image:Discriminator_threshold_vs_rate_for_metalica_phillips_model_777.jpg|400px]]<br> | ||
+ | |||
+ | ==With preamp and Post amp on== | ||
+ | |||
+ | Sense wire #4 from Metalica comes out of VPI post amp channel #10. VPI channel #15 goes into ADC channel #3 | ||
+ | |||
+ | |||
+ | Sense wire #4 from Plastika comes out of VPI post amp channel #15. VPI channel #15 goes into ADC channel #6<br> | ||
+ | |||
+ | Voltage on preamp is 6.0 V.<br> | ||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |colspan= "3" | HV settings | ||
+ | |- | ||
+ | | Wire || Volts | ||
+ | |- | ||
+ | |Sense || 1500 | ||
+ | |- | ||
+ | |Field || -750 | ||
+ | |- | ||
+ | |Guard || 750 | ||
+ | |}<br> | ||
+ | |||
+ | |||
+ | |||
+ | === Compare Phillips output and VPI postamp output === | ||
+ | |||
+ | Noise level of Plastika and Metalica. The noise on the Phillips amp went from 10 mV to 100 mV due to the voltage applied to the preamps. If you turn the preamp power supply off the noise will go back to ~20 mV.<br> | ||
+ | Plastika<br> | ||
+ | [[Image:plastika_noise_level_after_VPIPostAmp_and_Phillips777_amplifier.png|200px]]<br> | ||
+ | Metalica<br> | ||
+ | [[Image:metalica_noise_level_after_VPIPostAmp_and_Phillips777_amplifier.png|200px]]<br> | ||
+ | |||
+ | [[Image:plastika_phillips_output_vs_VPI_postamp_output_HV_on_1500_1.png|200px]][[Image:plastika_phillips_output_vs_VPI_postamp_output_HV_on_1500_2.png|200px]]<br> | ||
+ | [[Image:metalica_phillips_output_vs_VPI_postamp_output_HV_on_1500_1.png|200px]][[Image:metalica_phillips_output_vs_VPI_postamp_output_HV_on_1500_2.png|200px]]<br> | ||
+ | |||
+ | ==== 16-05-2008 ==== | ||
+ | |||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |colspan= "3" | HV settings | ||
+ | |- | ||
+ | | Wire || Volts | ||
+ | |- | ||
+ | |Sense || 1500 | ||
+ | |- | ||
+ | |Field || -750 | ||
+ | |- | ||
+ | |Guard || 750 | ||
|}<br> | |}<br> | ||
+ | The Voltage on the PreAmp is 6.3 Volts<br> | ||
+ | |||
+ | Metalica<br> | ||
+ | [[Image:metalica_noise_level_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_3V.png|200px]][[Image:metalica_noise_level_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_3V_may_22_2008.png|200px]]<br> | ||
+ | Plastika<br> | ||
+ | [[Image:plastika_noise_level_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_3V.png|200px]][[Image:plastika_noise_level_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_3V_may_22_2008.png|200px]]<br> | ||
+ | |||
+ | [[Image:metalica_signal_output_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_6V.png|200px]]<br> | ||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |- | ||
+ | |Threshold(mV) || Metalica (Events/hr) || Plastika (Events/hr) || Metalica (Events/hr)VPI PostAmp || Plastika (Events/hr)VPI PostAmp | ||
+ | |- | ||
+ | | 150 || 5828 || 8172 || 10021 || 18673 | ||
+ | |- | ||
+ | | 150 || 5545 || 8008 || 9295 || 17751 | ||
+ | |- | ||
+ | | 200 || 1592 || 2276 || 3922 || 6559 | ||
+ | |- | ||
+ | | 200 || 1547 || 2163 || 3854 || 2163 | ||
+ | |- | ||
+ | | 250 || 593 || 747 || 973 || 1719 | ||
+ | |- | ||
+ | | 250 || 593 || 661 || 925 || 1640 | ||
+ | |- | ||
+ | | 250 || 522 || 610 || 951 || 1592 | ||
+ | |- | ||
+ | | 300 || 296 || 339 || 426 || 585 | ||
+ | |- | ||
+ | | 300 || 282 || 339 || 413 || 615 | ||
+ | |- | ||
+ | | 300 || 314 || 291 || 411 || 626 | ||
+ | |- | ||
+ | | 400 || 130 || 159 || 285 || 269 | ||
+ | |- | ||
+ | | 450 || 86 || 97 || 151 || 152 | ||
+ | |- | ||
+ | | 500 || 53 || 71 || 92 || 107 | ||
+ | |- | ||
+ | | 550 || 40 || 50 || 77 || 96 | ||
+ | |- | ||
+ | |}<br> | ||
+ | |||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |- | ||
+ | |Threshold(mV) || Metalica (Events/hr) || Plastika (Events/hr) || Metalica (Events/hr)VPI PostAmp || Plastika (Events/hr)VPI PostAmp | ||
+ | |- | ||
+ | | 150 || <math>5687 \pm 141</math> || <math>8090 \pm 82</math> || <math>9658 \pm 363</math> || <math>18212 \pm 461</math> | ||
+ | |- | ||
+ | | 200 || <math>1570 \pm 23</math> || <math>2220 \pm 56</math> || <math>3888 \pm 34</math> || <math>4361 \pm 2198</math> | ||
+ | |- | ||
+ | | 250 || <math>569 \pm 33</math> || <math>673 \pm 56</math> || <math>950 \pm 20</math> || <math>1650 \pm 52</math> | ||
+ | |- | ||
+ | | 300 || <math>297 \pm 13</math> || <math>323 \pm 23</math> || <math>417 \pm 7</math> || <math>609 \pm 17</math> | ||
+ | |- | ||
+ | | 400 || 130 || 159 || 285 || 269 | ||
+ | |- | ||
+ | | 450 || 86 || 97 || 151 || 152 | ||
+ | |- | ||
+ | | 500 || 53 || 71 || 92 || 107 | ||
+ | |- | ||
+ | | 550 || 40 || 50 || 77 || 96 | ||
+ | |- | ||
+ | |}<br> | ||
+ | |||
+ | [[Image:discriminator_threshold_vs_rate_for_metalica_and_plastika_Phillips_gain_amplifier_777_HVOn_1500V.jpg|500px]]<br> | ||
+ | |||
+ | [[Image:discriminator_threshold_vs_rate_for_metalica_and_plastika_VPI_PostAmp_HVOn_1500.jpg|500px]]<br> | ||
+ | |||
+ | ==== 2-06-2008 ==== | ||
+ | |||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |colspan= "3" | HV settings | ||
+ | |- | ||
+ | | Wire || Volts | ||
+ | |- | ||
+ | |Sense || 1450 | ||
+ | |- | ||
+ | |Field || -725 | ||
+ | |- | ||
+ | |Guard || 725 | ||
+ | |}<br> | ||
+ | The Voltage on the PreAmp is 6.3 Volts<br> | ||
+ | |||
+ | Metalica<br> | ||
+ | [[Image:metalica_noise_level_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_3V_HV_On_1450.png|200px]]<br> | ||
+ | Plastika<br> | ||
+ | [[Image:plastika_noise_level_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_3V_HV_On_1450.png|200px]] | ||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |- | ||
+ | |Threshold(mV) || Metalica (Events/hr) || Plastika (Events/hr) || Metalica (Events/hr)VPI PostAmp || Plastika (Events/hr)VPI PostAmp | ||
+ | |- | ||
+ | | 50 || 39635 || 38282 || 15459 || 17624 | ||
+ | |- | ||
+ | | 50 || 37759 || 22176 || 15555 || 15898 | ||
+ | |- | ||
+ | | 50 || 37858 || 9758 || 15536 || 15666 | ||
+ | |- | ||
+ | | 50 || 35340 || 8819 || 15160 || 1528 | ||
+ | |- | ||
+ | | 100 || 1014 || 1556 || 1236 || 4076 | ||
+ | |- | ||
+ | | 100 || 1120 || 1713 || 1280 || 4145 | ||
+ | |- | ||
+ | | 100 || 1091 || 1728 || 1200 || 4200 | ||
+ | |- | ||
+ | | 100 || 1055 || 1476 || 1290 || 4126 | ||
+ | |- | ||
+ | | 150 || 369 || 513 || 393 || 1337 | ||
+ | |- | ||
+ | | 150 || 362 || 585 || 373 || 1293 | ||
+ | |- | ||
+ | | 150 || 460 || 778 || 352 || 1363 | ||
+ | |- | ||
+ | | 150 || 371 || 576 || 413 || 1442 | ||
+ | |- | ||
+ | | 175 || 232 || 363 || 222 || 803 | ||
+ | |- | ||
+ | | 175 || 299 || 428 || 239 || 835 | ||
+ | |- | ||
+ | | 175 || 205 || 343 || 230 || 752 | ||
+ | |- | ||
+ | | 175 || 186 || 318 || 215 || 704 | ||
+ | |- | ||
+ | | 200 || 183 || 241 || 144 || 401 | ||
+ | |- | ||
+ | | 200 || 116 || 198 || 138 || 401 | ||
+ | |- | ||
+ | | 250 || 95 || 141 || 104 || 205 | ||
+ | |- | ||
+ | | 300 || 39 || 59 || 52 || 69 | ||
+ | |- | ||
+ | | 350 || 25 || 44 || 38 || 39 | ||
+ | |- | ||
+ | | 350 || 21 || 37 || 37 || 38 | ||
+ | |- | ||
+ | | 400 || 11 || 22 || 30 || 23 | ||
+ | |- | ||
+ | |}<br> | ||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |- | ||
+ | |Threshold(mV) || Metalica (Events/hr) || Plastika (Events/hr) || Metalica (Events/hr)VPI PostAmp || Plastika (Events/hr)VPI PostAmp | ||
+ | |- | ||
+ | | 50 || <math>37648 \pm 1527</math> || <math>19753 \pm 11928</math> || <math>15428 \pm 159</math> || <math>16279 \pm 783</math> | ||
+ | |- | ||
+ | | 100 || <math>1070 \pm 40</math> || <math>1618 \pm 106</math> || <math>1252 \pm 36</math> || <math>4137 \pm 44</math> | ||
+ | |- | ||
+ | | 150 || <math>391 \pm 40</math> || <math>613 \pm 99</math> || <math>383 \pm 23</math> || <math>1359 \pm 54</math> | ||
+ | |- | ||
+ | | 175 || <math>231 \pm 43</math> || <math>363 \pm 41</math> || <math>227 \pm 9</math> || <math>774 \pm 50</math> | ||
+ | |- | ||
+ | | 200 || <math>150 \pm 34</math> || <math>220 \pm 22</math> || <math>141 \pm 3</math> || <math>401 \pm 0</math> | ||
+ | |- | ||
+ | | 250 || <math>95</math> || <math>141</math> || <math>104</math> || <math>205</math> | ||
+ | |- | ||
+ | | 300 || <math>23 \pm 2</math> || <math>40 \pm 3</math> || <math>37</math> || <math>38</math> | ||
+ | |- | ||
+ | | 400 || 11 || 22 || 30 || 23 | ||
+ | |- | ||
+ | |}<br> | ||
+ | |||
+ | [[Image:discriminator_threshold_vs_rate_for_metalica_and_plastika_Phillips_gain_amplifier_777_HVOn_1450V.jpg|400px]] | ||
+ | [[Image:discriminator_threshold_vs_rate_for_metalica_and_plastika_VPI_PostAmp_HVOn_1450.jpg|400px]]<br> | ||
+ | |||
+ | |||
+ | [[Image:discriminator_threshold_vs_rate_for_metalica_and_plastika_Phillips_gain_amplifier_777_HVOn_1450V_1.jpg|400px]] | ||
+ | [[Image:discriminator_threshold_vs_rate_for_metalica_and_plastika_VPI_PostAmp_HVOn_1450_1.jpg|400px]]<br> | ||
+ | |||
+ | ==== 6-06-2008 ==== | ||
+ | |||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |colspan= "3" | HV settings | ||
+ | |- | ||
+ | | Wire || Volts | ||
+ | |- | ||
+ | |Sense || 1400 | ||
+ | |- | ||
+ | |Field || -700 | ||
+ | |- | ||
+ | |Guard || 700 | ||
+ | |}<br> | ||
+ | The Voltage on the PreAmp is 6.3 Volts<br> | ||
+ | |||
+ | Metalica<br> | ||
+ | [[Image:metalica_noise_level_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_3V_HV_On_1400.png|200px]]<br> | ||
+ | Plastika<br> | ||
+ | [[Image:plastika_noise_level_after_VPIPostAmp_and_Phillips777_amplifier_preamp_6_3V_HV_On_1400.png|200px]] | ||
+ | |||
+ | {| border="1" |cellpadding="20" cellspacing="0 | ||
+ | |- | ||
+ | |Threshold(mV) || Metalica (Events/hr) || Plastika (Events/hr) || Metalica (Events/hr)VPI PostAmp || Plastika (Events/hr)VPI PostAmp | ||
+ | |- | ||
+ | | 100 || 1073 || 2116 || 175 || 289 | ||
+ | |- | ||
+ | | 150 || 160 || 122 || 54 || 29 | ||
+ | |- | ||
+ | | 200 || 10 || 5 || 31 || 35 | ||
+ | |- | ||
+ | |}<br> | ||
+ | |||
+ | ====RESULTS==== | ||
+ | |||
+ | Plot Plastica and Metalica on same plot for several HVs. | ||
+ | |||
+ | ;Using Phillips Gain Amplifier<br> | ||
+ | [[Image:discriminator_threshold_vs_rate_using_gain_amplifier_model_777_for_Metalica_and_Plastika_HV_1450V_1500V.jpg|400px]] | ||
+ | [[Image:discriminator_threshold_vs_rate_using_gain_amplifier_model_777_for_Metalica_and_Plastika_HV_1450V_1500V_1.jpg|400px]] | ||
+ | |||
+ | ;Using VPI PostAmplifier<br> | ||
+ | [[Image:discriminator_threshold_vs_rate_using_VPI_Post_Amp_for_Metalica_and_Plastika_HV_1450V_1500V.jpg|400px]] | ||
+ | [[Image:discriminator_threshold_vs_rate_using_VPI_Post_Amp_for_Metalica_and_Plastika_HV_1450V_1500V_1.jpg|400px]] | ||
+ | |||
+ | |||
+ | |||
[http://www.iac.isu.edu/mediawiki/index.php/Mini-prototype#Cosmic_runs Go Back] | [http://www.iac.isu.edu/mediawiki/index.php/Mini-prototype#Cosmic_runs Go Back] |
Latest revision as of 00:44, 26 October 2008
Goal
Use singles Cosmic events to measure rate differences between Metalica and Plastica
Apparatus
- Plastica and Metalica are stacked on top of each other. High Voltage and ionization gas are connected in parallel.
- A discriminator is connector to the amplified output (an on board preamp and the VPI Post amp) of sense wire 4.
- The discriminator output is connected to a VME scaler.
Proposed Tests
- Measure the singles rate as a function of DC high voltage
- Measure the singles rate as a function of Discriminator Threshold
9-05-2008
The DC high voltage is on. The DC outputs of Plastika and Metalica from sense wire 4 are connected to the Model 777 Octal Variable Gain Amplifier.
HV settings | ||
Wire | Volts | |
Sense | 1450 | |
Field | -725 | |
Guard | 725 |
Scope pictures representing the cosmic signals from Plastika and Metalica(Amplifier is connected)
- Plastika
- Metalica
Rate -vs- Discriminator Threshold
Gas is ArCo2 . 75/25 mixture
HV settings | ||
Wire | Volts | |
Sense | 1700 | |
Field | -850 | |
Guard | 850 |
Threshold (mV) | Metalica (Events/hr) | Plastika (Events/hr) | Coincidence |
300 | 701 | 627 | |
300 | 560 | 570 | |
310 | |||
325 | 32 | ||
350 | |||
400 | 31 |
Gas is ArCo2 . 90/10 mixture
HV settings | ||
Wire | Volts | |
Sense | 1450 | |
Field | -725 | |
Guard | 725 |
The scope picture below was taken to illustrate the noise levels on the DC signals after amplification just before disrimination. Previous measurements suggested that the sense wire signal noise had an RMS of about 10 mV. The phillips amplifier doubles this noise RMS. The amplitude of the noise is about 30 mV.
Threshold (mV) | Metalica (Events/hr) | Plastika (Events/hr) | Coincidence (Event/hr) |
100 | 1915 | 1912 | 90 |
100 | 2148 | 1799 | 36 |
100 | 1885 | 1758 | 37 |
100 | 2012 | 1912 | 91 |
100 | 1905 | 1754 | 25 |
150 | 671 | 588 | 14 |
150 | 645 | 596 | 11 |
150 | 634 | 596 | 19 |
150 | 629 | 563 | 13 |
150 | 634 | 550 | 5 |
175 | 361 | 358 | 20 |
175 | 380 | 329 | 14 |
175 | 396 | 329 | 14 |
175 | 391 | 344 | 10 |
200 | 286 | 256 | 25 |
200 | 291 | 232 | 4 |
200 | 291 | 251 | 6 |
225 | 183 | 168 | 4 |
225 | 193 | 180 | 6 |
250 | 122 | 120 | 2 |
300 | 93 | 88 | 2 |
350 | 74 | 60 | 3 |
Threshold (mV) | Metalica (Events/hr) | Plastika (Events/hr) | Coincidence (Event/hr) |
100 | |||
150 | |||
175 | |||
200 | |||
225 | |||
250 | 122 | 120 | |
300 | 93 | 88 | |
350 | 74 | 60 |
With preamp and Post amp on
Sense wire #4 from Metalica comes out of VPI post amp channel #10. VPI channel #15 goes into ADC channel #3
Sense wire #4 from Plastika comes out of VPI post amp channel #15. VPI channel #15 goes into ADC channel #6
Voltage on preamp is 6.0 V.
HV settings | ||
Wire | Volts | |
Sense | 1500 | |
Field | -750 | |
Guard | 750 |
Compare Phillips output and VPI postamp output
Noise level of Plastika and Metalica. The noise on the Phillips amp went from 10 mV to 100 mV due to the voltage applied to the preamps. If you turn the preamp power supply off the noise will go back to ~20 mV.
Plastika
Metalica
16-05-2008
HV settings | ||
Wire | Volts | |
Sense | 1500 | |
Field | -750 | |
Guard | 750 |
The Voltage on the PreAmp is 6.3 Volts
Threshold(mV) | Metalica (Events/hr) | Plastika (Events/hr) | Metalica (Events/hr)VPI PostAmp | Plastika (Events/hr)VPI PostAmp |
150 | 5828 | 8172 | 10021 | 18673 |
150 | 5545 | 8008 | 9295 | 17751 |
200 | 1592 | 2276 | 3922 | 6559 |
200 | 1547 | 2163 | 3854 | 2163 |
250 | 593 | 747 | 973 | 1719 |
250 | 593 | 661 | 925 | 1640 |
250 | 522 | 610 | 951 | 1592 |
300 | 296 | 339 | 426 | 585 |
300 | 282 | 339 | 413 | 615 |
300 | 314 | 291 | 411 | 626 |
400 | 130 | 159 | 285 | 269 |
450 | 86 | 97 | 151 | 152 |
500 | 53 | 71 | 92 | 107 |
550 | 40 | 50 | 77 | 96 |
Threshold(mV) | Metalica (Events/hr) | Plastika (Events/hr) | Metalica (Events/hr)VPI PostAmp | Plastika (Events/hr)VPI PostAmp |
150 | ||||
200 | ||||
250 | ||||
300 | ||||
400 | 130 | 159 | 285 | 269 |
450 | 86 | 97 | 151 | 152 |
500 | 53 | 71 | 92 | 107 |
550 | 40 | 50 | 77 | 96 |
2-06-2008
HV settings | ||
Wire | Volts | |
Sense | 1450 | |
Field | -725 | |
Guard | 725 |
The Voltage on the PreAmp is 6.3 Volts
Threshold(mV) | Metalica (Events/hr) | Plastika (Events/hr) | Metalica (Events/hr)VPI PostAmp | Plastika (Events/hr)VPI PostAmp |
50 | 39635 | 38282 | 15459 | 17624 |
50 | 37759 | 22176 | 15555 | 15898 |
50 | 37858 | 9758 | 15536 | 15666 |
50 | 35340 | 8819 | 15160 | 1528 |
100 | 1014 | 1556 | 1236 | 4076 |
100 | 1120 | 1713 | 1280 | 4145 |
100 | 1091 | 1728 | 1200 | 4200 |
100 | 1055 | 1476 | 1290 | 4126 |
150 | 369 | 513 | 393 | 1337 |
150 | 362 | 585 | 373 | 1293 |
150 | 460 | 778 | 352 | 1363 |
150 | 371 | 576 | 413 | 1442 |
175 | 232 | 363 | 222 | 803 |
175 | 299 | 428 | 239 | 835 |
175 | 205 | 343 | 230 | 752 |
175 | 186 | 318 | 215 | 704 |
200 | 183 | 241 | 144 | 401 |
200 | 116 | 198 | 138 | 401 |
250 | 95 | 141 | 104 | 205 |
300 | 39 | 59 | 52 | 69 |
350 | 25 | 44 | 38 | 39 |
350 | 21 | 37 | 37 | 38 |
400 | 11 | 22 | 30 | 23 |
Threshold(mV) | Metalica (Events/hr) | Plastika (Events/hr) | Metalica (Events/hr)VPI PostAmp | Plastika (Events/hr)VPI PostAmp |
50 | ||||
100 | ||||
150 | ||||
175 | ||||
200 | ||||
250 | ||||
300 | ||||
400 | 11 | 22 | 30 | 23 |
6-06-2008
HV settings | ||
Wire | Volts | |
Sense | 1400 | |
Field | -700 | |
Guard | 700 |
The Voltage on the PreAmp is 6.3 Volts
Threshold(mV) | Metalica (Events/hr) | Plastika (Events/hr) | Metalica (Events/hr)VPI PostAmp | Plastika (Events/hr)VPI PostAmp |
100 | 1073 | 2116 | 175 | 289 |
150 | 160 | 122 | 54 | 29 |
200 | 10 | 5 | 31 | 35 |
RESULTS
Plot Plastica and Metalica on same plot for several HVs.
- Using Phillips Gain Amplifier
- Using VPI PostAmplifier