Difference between revisions of "Reproducibility with 137Cs"

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|  Date  ||  Run Number ||  Run Time (s)  ||  Distance to Faceplate  || Number of OSLs in Stack || Exposure Rate (R/hr) || Total Exposed Dose (mR)
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|  Date  ||  Run Number ||  Run Time (s)  ||  Distance to Faceplate  || Number of OSLs in Stack || Exposure Rate (R/hr) || Total Exposed Dose (mRad)
 
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|9/8/17 || 1 ||  5660  || 30cm || 11 || 18.7188 || 30148.8
 
|9/8/17 || 1 ||  5660  || 30cm || 11 || 18.7188 || 30148.8
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===[[Linear Fits]]===
 
===[[Linear Fits]]===
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==Nanodot OSLS==
 
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===Run 1, 10/12/17===
 
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| Run Time (s)  ||  Distance to Faceplate (cm)  || Number of OSLs || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
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| 284.04  || 30.5cm || 3 || 1476.92 || 1295.54
 
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|OSL # || Listed Dose (mRad) || Measured Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
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|DN08252102C || Unexposed || 1161.413 || \ ||
 
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|DN08241536W || Unexposed || 1064.58 || 1148.9367 || 78.8622
 
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| DN08229824R || Unexposed || 1220.817 || / ||
 
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===Run 2, 10/23/17===
 
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|  Run Time (s)  ||  Distance to Faceplate (cm)  || Number of OSLs || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
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|  114.187  || 20 || 3 || 1000 || 877.193
 
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|OSL # || Initial Dose (mRad) || Measured Dose (mRad) || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
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| DN07916645R || 64.3258 || 911.6636 || 847.3378 || \ ||
 
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| DN08225747P || 67.18726 || 981.7123 || 914.52504 || 839.0586133 || 79.9283
 
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| DN07924836M  || 66.72943 ||822.9581 || 755.313 || / ||
 
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===Run 3, 10/23/17===
 
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|  Run Time (s)  ||  Distance to Faceplate (cm) || Number of OSLs || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
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|  153.75  || 40 || 3 || 500 || 438.596
 
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|OSL # || Initial Dose (mRad) || Measured Dose (mRad) || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
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| DN08229607R || 66.84389 || 410.9068 || 344.06291 || \ ||
 
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| DN082562050 || 70.04873 || 398.2018 || 328.15307 || 327.0466833 || 17.5955
 
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| DN07923435X || 67.6451 || 375.6535 || 308.92407 || / ||
 
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=[[Roentgen to Rad Conversion]]=
 
=[[Roentgen to Rad Conversion]]=
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[[Table Templates]]
 
[[Table Templates]]
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Latest revision as of 18:43, 16 January 2018

Source Calibration and Dose Rate Data

Date Initial Source Strength (Ci) Current Source Strength (Ci) Distance to Faceplate (cm) Exposure Rate (Roentgen/hr)°
6/27/17 20 9.3 30.5 17.691
9/11/17 20 9.3 30.5 17.606

°Calculated by TSO using [math]\dot R = \frac {\Gamma A }{ D^2} [/math] where [math]\boldsymbol{\Gamma} = 3.3 \frac {(cm^2)(R)}{(mCi)(hr)} = .33 \frac {(m^2)(R)}{(Ci)(hr)} [/math] , [math]\mathbf{A} = 9.3 Ci [/math] , [math]\mathbf{D}=(\text{Distance to faceplate} + 11.2cm) [/math]

There is an adjustment distance of 11.2cm which accounts for the distance from the faceplate to the [math] ^{137}Cs[/math] source

Total exposures are calculated by [math]\int\limits_{t_0}^{t_f}\dot R\ dt [/math]

137Cs Shot Log

Dot OSLs

Date Run Number Run Time (s) Distance to Faceplate Number of OSLs in Stack Exposure Rate (R/hr) Total Exposed Dose (mRad)
9/8/17 1 5660 30cm 11 18.7188 30148.8
9/8/17 1 5660 30cm 11 18.7188 30148.8
9/26/17 2 4500 30cm 11 18.7188 23398.6
9/26/17 2 4500 30cm 11 18.7188 23398.6

In these calculations, [math]\Gamma = 0.35 \frac {(m^2)(R)}{(Ci)(hr)} [/math]

Nanodot OSL Calibration and Quality Control

Landauer Dosed OSLs

OSL # Listed Dose (mRad) PMT Counts Measured Dose (mRad) Average Dose (mRad)
DN08276339J Unexposed - 71.19332 \
DN08276683L Unexposed - 70.39211 72.10899
DN08258554P Unexposed - 74.74154 /
DN10806640H 500 - 687.3246 \
DN10608908Z 500 - 681.0294 683.2422333
DN10806620J 500 - 681.3727 /
DN105057582 3000 - 3563.558 \
DN104085766 3000 - 3522.352 3567.258333
DN10608909X 3000 - 3615.865 /
DN108066085 50000 - 55966.55 \
DN103091798 50000 - 55420.36 55622.12
DN104086665 50000 - 55479.45 /
DN10606601L 100000 - 111610.5 \
DN106066095 100000 - 114271.2 114191.3333
DN10712163M 100000 - 116692.3 /

137Cs Calibration OSLs

Click here for calibration data

QC OSLs

OSL # Listed Dose (mRad) Measured Dose (mRad) Measured PMT Counts Average Dose (mRad)
DN08264870R Unexposed 69.36198 - \
DN082701640 Unexposed 77.25963 - 74.74153667
DN08269802P Unexposed 77.603 - /
DN10712168C 1000 1235.238 - \
DN10309170Q 1000 1223.106 - 1226.119667
DN102095379 1000 1220.015 - /

Linear Fits

Roentgen to Rad Conversion

OSL Reader

Table Templates

Thesis

HC TriMeV

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