Difference between revisions of "Counts Rate (44 MeV LINAC)"

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4) energy 44 MeV <br>
 
4) energy 44 MeV <br>
  
=number of <math>\ e^-/sec\ </math> on radiator=
+
=number of electrons/sec on radiator=
 
<math> 50ps \times 50A \times 300Hz \times \frac{1\cdot e^-}{1.6\cdot 10^{-19}C} = 0.47 \cdot 10^{13} \frac{e^-}{sec}</math><br><br>
 
<math> 50ps \times 50A \times 300Hz \times \frac{1\cdot e^-}{1.6\cdot 10^{-19}C} = 0.47 \cdot 10^{13} \frac{e^-}{sec}</math><br><br>
  
=number of <math>\ \gamma 's/sec\ </math> from radiator=
+
=number of photons/sec from radiator=
 +
==Bremsstrahlung==
 +
from plot above we have about 0.1 photons/electrons/MeV/r.l from 10 MeV to 20 MeV region
 +
==Radiation length==
 +
<math>12.5 /micro m</math> ->
 +
====
 
<math>10^{-3} \frac{\gamma 's}{(e^-\ MeV\ r.l.)} \times 2 \cdot 10^{-4} r.l. \times 44 MeV \times 0.375 \cdot 10^{12} \frac{e^-}{sec}=0.3 \cdot 10^{7} \frac{\gamma}{sec}</math><br><br>
 
<math>10^{-3} \frac{\gamma 's}{(e^-\ MeV\ r.l.)} \times 2 \cdot 10^{-4} r.l. \times 44 MeV \times 0.375 \cdot 10^{12} \frac{e^-}{sec}=0.3 \cdot 10^{7} \frac{\gamma}{sec}</math><br><br>
  

Revision as of 20:21, 17 May 2010

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LINAC parameters used in calculations

1) pulse width 50 ns
2) pulse current 50 A
3) repetition rate 300 Hz
4) energy 44 MeV

number of electrons/sec on radiator

[math] 50ps \times 50A \times 300Hz \times \frac{1\cdot e^-}{1.6\cdot 10^{-19}C} = 0.47 \cdot 10^{13} \frac{e^-}{sec}[/math]

number of photons/sec from radiator

Bremsstrahlung

from plot above we have about 0.1 photons/electrons/MeV/r.l from 10 MeV to 20 MeV region

Radiation length

[math]12.5 /micro m[/math] ->

==

[math]10^{-3} \frac{\gamma 's}{(e^-\ MeV\ r.l.)} \times 2 \cdot 10^{-4} r.l. \times 44 MeV \times 0.375 \cdot 10^{12} \frac{e^-}{sec}=0.3 \cdot 10^{7} \frac{\gamma}{sec}[/math]

number of neutrons in 1 second

geometrical factor, isotropic case