Difference between revisions of "UnderGraduate Neutron Correlations Lab"
Jump to navigation
Jump to search
| Line 80: | Line 80: | ||
Set up: | Set up: | ||
* Lead: Detector surrounded on 4 sides by 1" lead. Front end 4" of lead. Back end exposed. | * Lead: Detector surrounded on 4 sides by 1" lead. Front end 4" of lead. Back end exposed. | ||
| − | * Poly: 40cm of green poly between lead and source. No poly elsewhere. | + | * Poly: Up to 40cm of green poly between lead and source (line-of-sight). No poly elsewhere. |
| − | + | {| border="1" |cellpadding="20" cellspacing="0 | |
| − | + | |- | |
| − | + | | Run Number || configuration | |
| − | + | |- | |
| + | | 6829 || start time: 13:10:43 05/03/2021, No source, 40cm poly. end time: 13:17:55 counts=10164 | ||
| + | |- | ||
| + | | | ||
| + | |} | ||
| + | |||
[[https://wiki.iac.isu.edu/index.php/Main_Page]] | [[https://wiki.iac.isu.edu/index.php/Main_Page]] | ||
Revision as of 19:18, 3 May 2021
[[1]]
NaI detector setup
Creating ROOT data files
source ~/CODA/setup
/home/daq/CODA/CODAreader/ROOT_V5.34/PAA/evio2nt -fr6815.dat > /dev/null
Analyzing ROOT data file
root -l r8735.root
to draw a histogram for Peak ADC channel 4
PAA->Draw("PADC.PADC785N[4]>>(4096,0,4096)")
To scale the histogram using an energy calibration of 0.45 keV/channel
PAA->Draw("PADC.PADC785N[4]*0.45>>(4096,0,4096)")
To save thehistogram under the name Cs137
PAA->Draw("PADC.PADC785N[4]*0.45>>Cs137(4096,0,4096)")
To normalize the histogram by a run time of 2600 seconds
1/3600=0.0002778
Cs137->Scale(0.0002778) Cs137->Draw();
run 6816 background (~300Hz) 1/47 = 0.021277
run 6817 signal (~600 Hz) 1/75 =0.013333
https://wiki.iac.isu.edu/index.php/File:NaI_Cs137_4-22-21.png
data 4/26/21
| Run Number | configuration |
| 6819 | Cs-137 source at location of Cf-252, no Cf-252 or Cd target in apparatus |
| 6820 | start time: 16:04:33 04/26/2021 Cs-137 out, Cd in , Cf-252 out. NaI at closest possible. stop time: 16:08:34 (241 seconds) |
| 6821 | start time: 16:11:49 04/26/2021 Cs-137 out, Cd in , Cf-252 in , Poly thermalizer 1/2" in. NaI at closest possible. stop time: 16:22:52 (663 sec) |
| 6822 | start time: 16:23:54 04/26/2021 Cs-137 out, Cd in , Cf-252 out , Poly thermalizer 1/2" in. NaI at closest possible. stop time:16:34:38 (673 sec) |
| 6823 | start time: 16:35:44 04/26/2021 Cs-137 out, Cd out , Cf-252 out , Poly thermalizer 1/2" in. NaI at closest possible. stop time:16:46 |
| 6824 | start time: 16:35:44 04/26/2021 Cf-252 in , Poly thermalizer 1/2" in. ,Cd in sandwhich , NaI at closest possible. stop time:16:46 |
| 6825 | start time: 16:53:55 04/26/2021 Cf-252 in 6 in away, 1" lead, , Poly thermalizer 1/2" in. ,Cd in sandwhich , NaI at closest possible. stop time:16:54:58 |
| 6826 | start time: 16:57:39 04/26/2021 Cf-252 in 6 in away, 2" lead, , Poly thermalizer 1/2" in. ,Cd in sandwhich , NaI at closest possible. stop time:16:58:49 |
| 6827 | start time: 16:59:13 04/26/2021 Cf-252 in 6 in away, 2" lead, , Poly thermalizer 1/2" in. ,Cd OUT sandwhich , NaI at closest possible. stop time:17:00:15 |
data 5/3/21
Set up:
- Lead: Detector surrounded on 4 sides by 1" lead. Front end 4" of lead. Back end exposed.
- Poly: Up to 40cm of green poly between lead and source (line-of-sight). No poly elsewhere.
| Run Number | configuration |
| 6829 | start time: 13:10:43 05/03/2021, No source, 40cm poly. end time: 13:17:55 counts=10164 |
[[2]]