Difference between revisions of "Pair Spectrometer"
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=== Pair spectrometer overview === | === Pair spectrometer overview === | ||
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==== 18D36 magnet ==== | ==== 18D36 magnet ==== | ||
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<gallery> | <gallery> | ||
image:30D72_waterPower.JPG|water power connections | image:30D72_waterPower.JPG|water power connections | ||
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| − | ====GEANT Simulation ==== | + | ====GEANT Simulation (old) ==== |
Pair Spectrometer's geometry implemented in the GEANT simulation. | Pair Spectrometer's geometry implemented in the GEANT simulation. | ||
Revision as of 23:20, 24 February 2014
Contents
Pair spectrometer overview
18D36 magnet
water power connections
Water Power
ISO view
Pole
Pole
Both halves
top half end
coils1
coils2
Downstream end of the vacuum chamber
Downstream end of the vacuum chamber
GEANT Simulation (old)
Pair Spectrometer's geometry implemented in the GEANT simulation.
The top plot corresponds to the elevation and the bottom plot corresponds to the plan views.
Energy resolution of 24 FSF (top) and 6 WSF (bottom) counters estimated with
the GEANT simulation. The converter thickness corresponds to 
.
The contribution from the beam spot size (~ 4 mm at the converter) to the energy
resolution dominates for the high-energy bins of the WSF counters.
Photon energy spectrum measured by the pair spectrometer. The plot is obtained by
requiring a coincidence between the FSF and WSF counters and contains 24 x 6 = 144 energy
bins. The coincident rate corresponds to a high-luminosity run
( 
photons/sec in the coherent peak ) using Aluminum converter with
the thickness of 
radiation lengths.
Magnetic simulations
Misc
Dose needed to damage Epoxy Media:EpoxyRadDam.pdf
Electronics
Pair Spectrometer Converter
Technical drawing of Super Harp
