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

Revision as of 20:30, 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\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{5} = 0.01~C/cm

  • Lamina 12 μm:

1.2\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{5} = 0.004~C/cm

  • CMU mylar:

1.4\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{5} = 0.004~C/cm

  • CMU kapton:

2.9\cdot10^{11}\times1.6\cdot10^{-19}\times2\cdot10^{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\cdot10^{-19}C/e \times 2\cdot 10^{5} = 9.0 \cdot 10^{-5} C/cm
  • Irradiation dose = \geq44 years of running