Difference between revisions of "Geometry (44 Mev LINAC exit port)"
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| + | =Some measurements of 90 degree exit port= | ||
| + | [[File:exit_port1.png]]<br><br> | ||
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=Critical angle calculation= | =Critical angle calculation= | ||
<math>\Theta = \frac{m_ec^2}{E_{beam}} = \frac{0.511\ MeV}{44\ MeV} = 0.67\ ^o</math><br><br> | <math>\Theta = \frac{m_ec^2}{E_{beam}} = \frac{0.511\ MeV}{44\ MeV} = 0.67\ ^o</math><br><br> | ||
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=Beam displacement= | =Beam displacement= | ||
<math>\Delta = 285.75cm\ *\ \tan(0.67^o) = 3.34cm</math><br><br> | <math>\Delta = 285.75cm\ *\ \tan(0.67^o) = 3.34cm</math><br><br> | ||
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=Off-axis collimation geometry= | =Off-axis collimation geometry= | ||
| − | [[File: | + | [[File:beam_up_down1.png]]<br><br> |
=Off-axis calculation of critical angle = | =Off-axis calculation of critical angle = | ||
1) <math>\Delta = 3.34 cm \ \ \Rightarrow\ \ \tan^{-1}\left(\frac{3.34}{285.75}\right) = 0.67\ ^o</math><br><br> | 1) <math>\Delta = 3.34 cm \ \ \Rightarrow\ \ \tan^{-1}\left(\frac{3.34}{285.75}\right) = 0.67\ ^o</math><br><br> | ||
2) <math>\Delta = 4.72 cm \ \ \Rightarrow\ \ \tan^{-1}\left(\frac{4.72}{285.75}\right) = 0.95\ ^o</math><br><br> | 2) <math>\Delta = 4.72 cm \ \ \Rightarrow\ \ \tan^{-1}\left(\frac{4.72}{285.75}\right) = 0.95\ ^o</math><br><br> | ||
Revision as of 04:58, 14 May 2010
Some measurements of 90 degree exit port
Critical angle calculation
Beam displacement
Off-axis collimation geometry
Off-axis calculation of critical angle
1)
2)