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Fundamental TechnologiesCassini MIMI Pages |
LEMMS Telescope Design
Presentation by E. Kirsch at MIMI team meeting, October 1994
Figures:
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Figure 1 |
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Figure 3 |
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Figure 5 |
Sr90 as calibration source
Sr90 -->Y90 + b-
Y90 -->Zr90 + b-
Emax = 500 keV
Emax = 2300 keV
Deflection of electrons
B = 650 G
e- = 0.458 MeV --> B · R = 2750 G
· cm, R = 4.23 cm
e- = 1.12 MeV --> B · R = 5186 G
· cm, R = 7.98 cm
e- = 1.59 MeV --> B · R = 6801 G ·
cm, R = 10.46 cm
When e- ~= 2.0 MeV reach detector A, they would not be detectable.
0.35 · 150 = 52 keV energy loss in A, the threshold is at 75 keV!
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Updated 6/12/08, T. Hunt-Ward
tizby@ftecs.com