Difference between revisions of "Dose Calculation"
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Dose (C/cm): | Dose (C/cm): | ||
− | <math>\frac{\#e}{1cm} \ | + | <math>\frac{\#e}{1cm} \times 1.60 \cdot 10^{-19} C/e \times gas gain</math> |
* Lamina 300 A: | * Lamina 300 A: | ||
− | <math>3.6\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{5} = 0.01 C/cm</math> | + | <math>3.6\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{5} = 0.01~C/cm</math> |
+ | |||
+ | * Lamina 12 <math>\mu</math>m: | ||
+ | <math>1.2\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{5} = 0.004~C/cm</math> | ||
+ | |||
+ | * CMU mylar: | ||
+ | <math>1.4\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{5} = 0.004~C/cm</math> | ||
+ | |||
+ | * CMU kapton: | ||
+ | <math>2.9\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{5} = 0.009~C/cm</math> | ||
+ | |||
+ | |||
+ | EM background: <math>40~kHz/straw</math>or <math>267~Hz/cm</math> | ||
+ | |||
+ | * 1 year of running (= 1/3 year beam on target) = <math>1.1\cdot 10^{7}s \times 267 \frac{e}{s\cdot cm} \times 1.60\cdot10^{-19}C/e \times 2\cdot 10^{5} = 9.0 \cdot 10^{-5} C/cm</math> | ||
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+ | * Irradiation dose = <math>\geq</math>44 years of running |
Latest revision as of 16:32, 5 November 2009
Dose (C/cm):
- Lamina 300 A:
- Lamina 12 m:
- CMU mylar:
- CMU kapton:
EM background: or
- 1 year of running (= 1/3 year beam on target) =
- Irradiation dose = 44 years of running