Difference between revisions of "Experimental setup"
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| − | + | Collimator parameters: in upstream side of wall 1/2", in downstream side of wall 1(1/2)". | |
| − | + | [[Image:whole_exp_setup.jpg]] | |
| − | + | '''Figure 0''': sketch of experimental setup. | |
| − | [[Image: | + | [[Image:exp_setup1_1.jpg]] |
| − | + | '''Figure 1''': 8:21 am - <math>40 mAmps</math> pulse, 200 ns, 300 Hz, <math>10^3 secs</math> of beam, 6 fissions. 9:10 am - Threshold 80 mV, <math>N_{T1} = 17.6 counts/10 min</math>. | |
| − | [[Image: | + | [[Image:exp_setup2_2.jpg]] |
| − | [[Image: | + | '''Figure 2''': <math>\Delta T = 200 ns</math>, <math>I_e = 40 mA</math>, <math>f = 300 Hz</math>, <math>E_e = 20 MeV</math>, <math>q = 8.7 nC/pulse</math>. <math>N_{T1} = 12 counts/10 min</math>, <math>N_{T2} = 35 counts/10 min</math>. |
| + | Geometrical dimensions for detector placement and chamber size are the same as in Figure 1. | ||
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| + | [[Image:exp_setup3_2.jpg]] | ||
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| + | '''Figure 3''': <math>\Delta T = 200 ns</math>, <math>I_e = 40 mA</math>, <math>f = 300 Hz</math>, <math>E_e = 20 MeV</math>, <math>q = 8.7 nC/pulse</math>. <math>N_{T2} = 46 counts/10 min</math>, threshold = 80 mV, <math>P_B = 33.9</math>. Geometrical dimensions for detector placement and chamber size are the same as in Figure 1. | ||
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| + | [[Image:exp_setup4_2.jpg]] | ||
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| + | '''Figure 4''': <math>\Delta T = 200 ns</math>, <math>I_e = 40 mA</math>, <math>f = 300 Hz</math>, <math>E_e = 20 MeV</math>, <math>q = 8.7 nC/pulse</math>. <math>N_{T2} \sim 48 counts/10 min</math>, <math>N_{T1} (thresh = 30 mV, beam on) = 1065 counts/10 min</math>, threshold = 80 mV, <math>P_B = 33.9</math>. Geometrical dimensions for detector placement and chamber size are the same as in Figure 1. | ||
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| + | [[Image:exp_setup5_2.jpg]] | ||
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| + | '''Figure 4''': This new architecture is used for obtaining timing spectra during runs 60 - 63 (http://www.iac.isu.edu/mediawiki/index.php/Timing_spectra), <math>P_B = 3.97 Torr</math>, <math>P_C = 4.5 Torr</math>. | ||
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| + | [[Image:exp_setup6_2.jpg]] | ||
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| + | '''Figure 5''': Beam produces nuclear fragments on <math>C^{12}</math> and Al and fission fragments on <math>U^{235}</math>. P = 4.96 Torr (heptane), <math>N_{T1} \sim 4.6/100 sec</math> (beam off), <math>N_{T1} \sim 2.75/100 sec</math> (beam on!). Chambers are not stable due to vacuum leak. | ||
| + | If nothing was changed this geometry was used to get all the energy spectra (http://www.iac.isu.edu/mediawiki/index.php/Energy_spectra_%28fiss_frag%29). | ||
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| + | [[Image:results_for_setup6.jpg]] | ||
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| + | '''Figure 6''': ADC distributions of <math>T_2</math> (left) and <math>T_1</math> (right). Data obtained via experimental setup shown in Figure 5. | ||
Latest revision as of 10:38, 25 August 2008
Collimator parameters: in upstream side of wall 1/2", in downstream side of wall 1(1/2)".
Figure 0: sketch of experimental setup.
Figure 1: 8:21 am - pulse, 200 ns, 300 Hz, of beam, 6 fissions. 9:10 am - Threshold 80 mV, .
Figure 2: , , , , . , . Geometrical dimensions for detector placement and chamber size are the same as in Figure 1.
Figure 3: , , , , . , threshold = 80 mV, . Geometrical dimensions for detector placement and chamber size are the same as in Figure 1.
Figure 4: , , , , . , , threshold = 80 mV, . Geometrical dimensions for detector placement and chamber size are the same as in Figure 1.
Figure 4: This new architecture is used for obtaining timing spectra during runs 60 - 63 (http://www.iac.isu.edu/mediawiki/index.php/Timing_spectra), , .
Figure 5: Beam produces nuclear fragments on and Al and fission fragments on . P = 4.96 Torr (heptane), (beam off), (beam on!). Chambers are not stable due to vacuum leak. If nothing was changed this geometry was used to get all the energy spectra (http://www.iac.isu.edu/mediawiki/index.php/Energy_spectra_%28fiss_frag%29).
Figure 6: ADC distributions of (left) and (right). Data obtained via experimental setup shown in Figure 5.