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Meson Production at 8 GeV for IDS120h X. Ding, UCLA Target Studies, Dec. 27, 2011.

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Presentation on theme: "Meson Production at 8 GeV for IDS120h X. Ding, UCLA Target Studies, Dec. 27, 2011."— Presentation transcript:

1 Meson Production at 8 GeV for IDS120h X. Ding, UCLA Target Studies, Dec. 27, 2011

2 Configuration of IDS120h

3 Meson Production Study The mercury jet target geometry. The proton beam and mercury jet cross at z=-37.5 cm. 1. IDS120h (Geometry and fieldmap) 2. Target (HG or GA) 3. Beam below the HG/GA jet exactly at z = -37.5 cm and project beam back to z = -200 cm. 4. Initial target parameters: target radius of 5 mm, beam angle of 67 mrad at z = -37.5 cm, beam/jet crossing angle of 33 mrad at z = -37.5 cm.

4 Optimized Target Parameters at z = -37.5 cm HG GA Beam radius, mm Crossing angle, mrad Beam angle, mrad Beam radius, mm Crossing angle, mrad Beam angle, mrad Initial5336753367 1 st Cycle4.6231206.721112 2 nd Cycle4.15231175.51793 3 rd Cycle4.1521.61204.912.292

5 Meson Productions at 8 GeV (400,000 events) HGGA Before optimization (Beam radius/beam angle/crossing angle 119794 (5mm/67mrad/33mrad) 97895 (5mm/67mrad/33mrad) After optimization (Beam radius/beam angle/crossing angle) 129976 (4.15mm/120mrad/21.6mr ad) 112269 (4.9mm/92mrad/12.2mrad )

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