Difference between revisions of "Dose Calculation"

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Dose (C/cm):
 
Dose (C/cm):
  
<math>\frac{\#e}{1cm} \cdot 1.60 \cdot 10^{-19} C/e \cdot gas gain</math>
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<math>\frac{\#e}{1cm} \ctimes 1.60 \cdot 10^{-19} C/e \ctimes gas gain</math>
  
  

Revision as of 16:30, 5 November 2009

Dose (C/cm):

Failed to parse (unknown function '\ctimes'): \frac{\#e}{1cm} \ctimes 1.60 \cdot 10^{-19} C/e \ctimes gas gain


  • Lamina 300 A:

3.6\cdot 10^{{11}}\times 1.6\cdot 10^{{-19}}\times 2\cdot 10^{{5}}=0.01~C/cm

  • Lamina 12 \mu m:

1.2\cdot 10^{{11}}\times 1.6\cdot 10^{{-19}}\times 2\cdot 10^{{5}}=0.004~C/cm

  • CMU mylar:

1.4\cdot 10^{{11}}\times 1.6\cdot 10^{{-19}}\times 2\cdot 10^{{5}}=0.004~C/cm

  • CMU kapton:

2.9\cdot 10^{{11}}\times 1.6\cdot 10^{{-19}}\times 2\cdot 10^{{5}}=0.009~C/cm


EM background: 40~kHz/strawor 267~Hz/cm

  • 1 year of running (= 1/3 year beam on target) = 1.1\cdot 10^{{7}}s\times 267{\frac  {e}{s\cdot cm}}\times 1.60\cdot 10^{{-19}}C/e\times 2\cdot 10^{{5}}=9.0\cdot 10^{{-5}}C/cm
  • Irradiation dose = \geq 44 years of running