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Enhanced Particle Detector Calibration and Geometry Update

Update to the hep database with the best fit of particle data, including the improved BMOM v4 version and updated readout routines. Significant changes include geometry updates with added components and vertical shift analysis. Ongoing investigations on beam pipe thickness and inner wall integrity.

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Enhanced Particle Detector Calibration and Geometry Update

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  1. √S • Filled hepdb w/best available fit of √S for all 2001 data (~3000 runs). Updated TRKMON • New version (v4) of BMOM (boost, √S); cannot delete v3 (old √S fit) or v2 (no √S fit) • Zero-ed spare values of √S, unlike v3 • ~50/3000 runs still to be done (BMOM missing) • Updated/improved BMOM readout routines • rdbmom (use to readout a given version #): message only if bank missing; same error codes • Fillbposcommon (used by prod2ntu): look for v4, else v3, else v2 (via calls to rdbmom)

  2. DC geometry • Wire sags: completed MC study w/Bhabhas. Repeat w/new s-t calibrations. • Geometry changes: • Added struts and IR legs • Added Cu (plates) and Al coating (panels) • 1 cm vertical shift wrt IR under study • DC feet not included • Beam pipe investigation: • New = old. Thicknesses: 500 mm ± 10% (sphere r=10cm), 50 mm ± 20% (dodecagon r~4.4cm) • Underway: re-check inner wall. Repeat w/new test MC samples (critical item).

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