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• Beam spot on target defines (0, 0, 0); Y is vertical, Z points down the magnet bore

HPS-Proposal2014-

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v6 (three versions with different B-fields)

Official geometry for 2014 mock data challenge.

• SVT rotated 30.52 mrad around target; single sensors for layers 1-3, double sensors with double readout (unganged) for layers 4-6
• ECal flange face at z=1318 mm and photon hole aligned at 30.52 mrad from target
• Front face of ECal crystals is z=1393 mm; ECal aligned so the 30.52 mrad photon beam intersects centerline of ECal at its front face
• All dead material defined using Geant4 primitives: SVT vacuum chamber, ECal flange and vacuum chamber (with honeycomb)
• Uniform magnetic field extending from z=-8.28 to 99.72 cm
• Vacuum (zero density) planes at magnetic field boundaries; hits are saved for charged particles passing through these planes

SLIC crashes on approximately 1 in a billion events. This bug is believed to be resolved in v7.

HPS-Proposal2014-v7 (three versions with different B-fields)

Working geometry for 2014 run studies. Changes will be announced on the hps-software list; you should rerun SLIC on all your data after any change since old data may not work with up-to-date versions of readout sim/analysis/reconstruction.

• SVT rotated 30.52 mrad around target; single sensors for layers 1-3, double sensors with double readout (unganged) for layers 4-6
• ECal flange is tesselated solid: face at z=1318 mm and photon hole aligned at 30.52 mrad from target
• Front face of ECal crystals is z=1393 mm; ECal aligned so the 30.52 mrad photon beam intersects centerline of ECal at its front face
• All dead material defined using Geant4 primitives: SVT vacuum chamber, ECal flange and vacuum chamber (with honeycomb)
• Uniform magnetic field extending from z=-8.28 to 99.72 cm
• Vacuum (zero density) planes at magnetic field boundaries; hits are saved for all particles passing through these planes
• Vacuum (zero density) planes just downstream of the ECal flange; hits are saved for all particles passing through these planes

HPS-TestRun-v3

Official geometry for 2012 test run as-built.

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