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近代物理研究所 γ 阵列设计方案 IMP 滑 伟

.Nuclear structure group. 近代物理研究所 γ 阵列设计方案 IMP 滑 伟. Apr. 12 2012. Institute of modern physics. 阵列性能重要参数 n 重符合计数率 阵列效率 优化探测器反康尺寸、阵列布局 Granularity — 探测器布局密度 峰总比 — 反康 角分布合理. 参考国际上已有的 γ 球支架方案 ；. IMP γ 阵列布局 SOLIDWORKS 3D 建模。. Page 2. 国际上已有的 γ 球支架方案. Gasparray.

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近代物理研究所 γ 阵列设计方案 IMP 滑 伟

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  1. .Nuclear structure group. 近代物理研究所γ阵列设计方案 IMP滑 伟 Apr. 12 2012 Institute of modern physics

  2. 阵列性能重要参数 • n重符合计数率 • 阵列效率 优化探测器反康尺寸、阵列布局 • Granularity—探测器布局密度 • 峰总比—反康 • 角分布合理 • 参考国际上已有的γ球支架方案； • IMP γ阵列布局SOLIDWORKS 3D建模。 Page 2

  3. 国际上已有的γ球支架方案 Gasparray Miniball JuroGam Page 3

  4. IMP γ探测器 26 in total Clover(seg):8 HPGe:15(70%) HPGe:2(30%) Clover小:1 Page 4

  5. 4-4-4-8-4-4-4构型探测器布局 4 HPGe @26o 210mm 4 HPGe @52o 200mm 8 Clover@90o 180mm 4 HPGe @128o 200mm 4 HPGe @154o 210mm HPGe Total: 24 24个铅准直面 占4π立体角68% beam 23个探头占4π立体角 33% Page 5

  6. 32个单元 Φ1.0m beam Page 6

  7. 26度-154度，52度-128度探测器无正对 Page 7

  8. 60o (120o) 8个空余单元 LEP LaBr3 束流管道Φ50 Pb准直距靶心 in mininum 26o (154o) 170mm 52o (128o)165mm 90o 150mm Page 8

  9. GAMMASPERE–110HPGe GASP–40HPGe 145o 120o 108o 90o 72o 60o 35o 6 6 4 8 4 6 6 Page 9

  10. JUROGAM--60 158o 134o 107o 94o 86o 72o 46o 22o 5 10 10 5 5 10 10 5 Page 10

  11. Yrast ball-- 28 163o 135o 90o 55o 3 8 9 8 18HPGe +4LEP +4Clover+… Page 11

  12. INGA—16Clover EXOGAM—16Clover Page 12

  13. Gemini II—16HPGe (40%~70%) Page 13

  14. Afrodite—8Clover+8HPGe Page 14

  15. 阵列性能比较 H---HPGe C---Clover *与探测器数目(切削方式、拼接方式)、有效接收面积和轴向长度相关 Page 15

  16. IMP 实验终端示意图 Building 2# RIBLL2 SSC GAMMA RDT SFC CSRe CSRm RIBLL1 Page 16

  17. 充气谱仪@ γ阵列效果图 Page 17

  18. THANKS! EMAIL: HUAWEI@IMPCAS.AC.CN INSTITUTE OF MODERN PHYSICS CHINESE ACADEMY OF SCIENCE LANZHOU CHINA 730000 END 外支架设计 50kg*24=1.2t 下托式 INGA 上悬式JUROGAM Page 18

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