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OD Calorimetry Study Update — Leakage Effect and slot optimization

OD Calorimetry Study Update — Leakage Effect and slot optimization. Jaewon Park University of Rochester. MINER v A/Jupiter Group Meeting, June 21, 2006. Contents. Leakage study OD geometry used Original: 5.75—5.72—5.72—11.43cm 5.75cm x 25 layers 2.5cm x 25 layers

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OD Calorimetry Study Update — Leakage Effect and slot optimization

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  1. OD Calorimetry Study Update— Leakage Effect and slot optimization Jaewon Park University of Rochester MINERvA/Jupiter Group Meeting, June 21, 2006

  2. Contents • Leakage study • OD geometry used • Original: 5.75—5.72—5.72—11.43cm • 5.75cm x 25 layers • 2.5cm x 25 layers • 5.72 cm x 5,10,15,20,25 layers • 2.5 cm x 5,10,15,20,25 layers • 5.72 cm x 6,7,8,9 layers added to see gap between 5 layers and 10 layers • 2.5 cm x 11,12,13,14 layers added similarly • Slot optimization • Original: 5.72 —5.72—5.72—11.43—(17.15)cm • 5.72 —5.72—11.4—11.43—(11.43)cm Total volume kept constant • 5.72 —11.43—11.43—11.43—(5.72)cm Structural support layer

  3. Dependence of number of OD layers- Previous data • Same color and symbol are used for two groups: • 5.72cm x 5, 10, 15, 20, 25 layers • 2.5cm x 5, 10, 15, 20, 25 layers • For 5.72cm geom, more layers didn’t affect much on resolution without leakage effect. • 2.5cm geom shows better resolution than 5.72cm geom • For 5.72cm geom, leakage is almost eliminated when more than 10 layers are used. • Uncalibrated resolution wasn’t affect much by increasing more layers

  4. Dependence of number of OD layers- 5.72cm x 5, 6,7,8,9,10, 15, 20, 25 layers • Same color and symbol are used for two groups: • 5.72cm x 5, 6,7,8,9,10, 15, 20, 25 layers • 2.5cm x 5, 10, 15, 20, 25 layers • For 5.72cm geom, leakage changes gradually between 5 and 10 layers 15,20,25 10 layers 8 7 6 5

  5. Dependence of number of OD layers- 2.5cm x 5, 10,11,12,13,14,15, 20, 25 layers • Same color and symbol are used for two groups: • 5.72cm x 5, 6,7,8,9,10, 15, 20, 25 layers • 2.5cm x 5, 10, 15, 20, 25 layers • For 5.72cm geom, leakage changes gradually between 5 and 10 layers 20,25 15 layers 13 12 11 10

  6. Different slot position • 5.72—5.72—5.72—11.43—(17.15)cm (Original conf) • 5.72—5.72—11.43—11.43—(11.43)cm • 5.72—5.72—11.43—11.43—(5.72)cm • Reducing thickness of most outer layer increase total OD thickness • Hoping reducing leakage • Need to know what is the allowed minimum thickness without causing mechanical or background particle shielding problem etc.

  7. Summary • 5.72cm x 5 layers is similar to current OD configuration • 5.72cm x 6 layers wouldn’t affect much • With current calibration scheme, utilizing last outer supporting layer won’t help greatly as we hope • Need to specify minimum thickness of most outer layer

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