Difference between revisions of "Reproducibility with 137Cs"

From New IAC Wiki
Jump to navigation Jump to search
 
(16 intermediate revisions by the same user not shown)
Line 19: Line 19:
 
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0  
 
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0  
 
|-
 
|-
−
|  Date  ||  Run Number ||  Run Time (s)  ||  Distance to Faceplate  || Number of OSLs in Stack || Exposure Rate (R/hr) || Total Exposed Dose (mR)
+
|  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
Line 34: Line 34:
  
 
==Nanodot OSL Calibration and Quality Control==
 
==Nanodot OSL Calibration and Quality Control==
−
===Calibration OSLs===
 
  
−
====Landauer Dosed OSLs====
+
===Landauer Dosed OSLs===
 
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0  
 
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0  
 
|-
 
|-
Line 73: Line 72:
 
|}
 
|}
  
−
====137Cs Calibration OSLs====
+
===137Cs Calibration OSLs===
  
−
=====OSLs for Linear Fit, 10/24/27=====
+
[[Click here for calibration data]]
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (min)  ||  Distance to Faceplate (cm)  || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
| 215.928  || 30 || 63515.9  || 55715.7
 
−
|-
 
−
|}
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|OSL # || Initial Dose (mRad) || Measured Dose (mRad) || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
|DN08252102C || 7.210899  || 61287.88 || 61280.6691 || \ || 2571.18751
 
−
|-
 
−
|DN08229824R || 9.84345 || 59564.67 || 59554.82655 || 59019.37114 || 2571.18751
 
−
|-
 
−
|DN08241536W || 9.042238 || 56231.66 || 56222.61776 || / || 2571.18751
 
−
|-
 
−
|}
 
−
 
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (min)  ||  Distance to Faceplate (cm)  || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
| 82.964  || 30 || 25000  || 21929.8
 
−
|-
 
−
|}
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
| OSL # || Initial Dose (mRad) || Measured Dose (mRad) || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
| DN08254785K ||  70.16319 || 21638.25 || 21568.08681 || \ || 350.8108694
 
−
|-
 
−
| DN08268309M || 70.50657 || 21948.07 || 21877.56343 || 21541.05207 || 350.8108694
 
−
|-
 
−
| DN08255639I || 67.87402 || 21245.38 || 21177.50598 || / || 350.8108694
 
−
|-
 
−
|}
 
−
 
 
−
=====OSLs for Linear Fit, 10/31/17=====
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (min)  ||  Distance to Faceplate (cm)  || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
| 16.593  || 30 || 5000 || 4364.75
 
−
|-
 
−
|}
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
| OSL # || Position || Initial Dose (mRad) || Initial PMT Counts ||Measured Dose (mRad) || Measured PMT Counts || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
| DN07916645R || L || 8.469945 || - || - || - || - || - || -
 
−
|-
 
−
| DN08225747P || C || 8.241027 || - || - || - || - || - || -
 
−
|-
 
−
| DN07924836M || R || 10.18683 || - || - || - || - || - || -
 
−
|-
 
−
|}
 
−
 
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (min)  ||  Distance to Faceplate (cm)  || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
| 33.186  || 30 || 10000 || 8729.51
 
−
|-
 
−
|}
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
| OSL # || Position || Initial Dose (mRad) || Initial PMT Counts ||Measured Dose (mRad) || Measured PMT Counts || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
| DN08229607R || L || 8.469945 || - || - || - || - || - || -
 
−
|-
 
−
| DN082562050 || C || 9.042238 || - || - || - || - || - || -
 
−
|-
 
−
| DN07923435X || R || 8.584403 || - || - || - || - || - || -
 
−
|-
 
−
|}
 
−
 
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (min)  ||  Distance to Faceplate (cm)  || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
| 132.742  || 30 || 40000 || 34918
 
−
|-
 
−
|}
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
| OSL # || Position || Initial Dose (mRad) || Initial PMT Counts ||Measured Dose (mRad) || Measured PMT Counts || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
| DN079033634 || L || 66.72943 || - || - || - || - || - || -
 
−
|-
 
−
| DN08270002C || C || 68.10294 || - || - || - || - || - || -
 
−
|-
 
−
| DN08252656P || R || 73.48249 || - || - || - || - || - || -
 
−
|-
 
−
|}
 
−
 
 
−
=====OSLs for Linear Fit, 11/06/17=====
 
−
 
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (min)  ||  Distance to Faceplate (cm)  || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
| 16.593  || 30 || 5000 || 4364.75
 
−
|-
 
−
|}
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
| OSL # || Position || Initial Dose (mRad) || Initial PMT Counts ||Measured Dose (mRad) || Measured PMT Counts || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
| DN07916645R || R || - || - || - || - || - || - || -
 
−
|-
 
−
| DN08225747P || C || - || - || - || - || - || - || -
 
−
|-
 
−
| DN07924836M || L || - || - || - || - || - || - || -
 
−
|-
 
−
|}
 
−
 
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (min)  ||  Distance to Faceplate (cm)  || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
| 33.186  || 30 || 10000 || 8729.51
 
−
|-
 
−
|}
 
−
 
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
| OSL # || Position || Initial Dose (mRad) || Initial PMT Counts ||Measured Dose (mRad) || Measured PMT Counts || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
| DN08229607R || R || - || - || - || - || - || - || -
 
−
|-
 
−
| DN082562050 || C || - || - || - || - || - || - || -
 
−
|-
 
−
| DN07923435X || L || - || - || - || - || - || - || -
 
−
|-
 
−
|}
 
  
 
===QC OSLs===
 
===QC OSLs===
Line 246: Line 96:
  
 
===[[Linear Fits]]===
 
===[[Linear Fits]]===
−
 
−
==Nanodot OSLS==
 
−
 
−
===Run 1, 10/12/17===
 
−
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
| Run Time (s)  ||  Distance to Faceplate (cm)  || Number of OSLs || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
| 284.04  || 30.5cm || 3 || 1476.92 || 1295.54
 
−
|-
 
−
|}
 
−
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|OSL # || Listed Dose (mRad) || Measured Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
|DN08252102C || Unexposed || 1161.413 || \ ||
 
−
|-
 
−
|DN08241536W || Unexposed || 1064.58 || 1148.9367 || 78.8622
 
−
|-
 
−
| DN08229824R || Unexposed || 1220.817 || / ||
 
−
|-
 
−
|}
 
−
 
−
===Run 2, 10/23/17===
 
−
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (s)  ||  Distance to Faceplate (cm)  || Number of OSLs || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
|  114.187  || 20 || 3 || 1000 || 877.193
 
−
|-
 
−
|}
 
−
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|OSL # || Initial Dose (mRad) || Measured Dose (mRad) || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
| DN07916645R || 64.3258 || 911.6636 || 847.3378 || \ ||
 
−
|-
 
−
| DN08225747P || 67.18726 || 981.7123 || 914.52504 || 839.0586133 || 79.9283
 
−
|-
 
−
| DN07924836M  || 66.72943 ||822.9581 || 755.313 || / ||
 
−
|-
 
−
|}
 
−
 
−
===Run 3, 10/23/17===
 
−
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|  Run Time (s)  ||  Distance to Faceplate (cm) || Number of OSLs || Total Exposed Dose (mR) || Total Exposed Dose (mRad)
 
−
|-
 
−
|  153.75  || 40 || 3 || 500 || 438.596
 
−
|-
 
−
|}
 
−
 
−
:{| border="2" style="text-align:center;" |cellpadding="20" cellspacing="0
 
−
|-
 
−
|OSL # || Initial Dose (mRad) || Measured Dose (mRad) || Normalized Dose (mRad) || Average Dose (mRad) || Standard Deviation
 
−
|-
 
−
| DN08229607R || 66.84389 || 410.9068 || 344.06291 || \ ||
 
−
|-
 
−
| DN082562050 || 70.04873 || 398.2018 || 328.15307 || 327.0466833 || 17.5955
 
−
|-
 
−
| DN07923435X || 67.6451 || 375.6535 || 308.92407 || / ||
 
−
|-
 
−
|}
 
  
 
=[[Roentgen to Rad Conversion]]=
 
=[[Roentgen to Rad Conversion]]=
Line 320: Line 102:
  
 
[[Table Templates]]
 
[[Table Templates]]
−
 
  
 
----
 
----

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

Retrieved from "https://wiki.iac.isu.edu/index.php?title=Reproducibility_with_137Cs&oldid=120758"