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GLD-Calorimeter

GLD-Calorimeter. T.Takeshita for GDL-CAL @Snowmass 2005. Concepts: Large Parameters R/D’s out look. GLD. To identify and measure particles in a jet Largest detector for Linear Collider Largest super conducting magnet HCAL inside coil (3.5m radius) Largest TPC (Tracker : 2m radius).

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GLD-Calorimeter

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  1. GLD-Calorimeter • T.Takeshita for GDL-CAL • @Snowmass 2005 Concepts: Large Parameters R/D’s out look

  2. GLD • To identify and measure particles in a jet • Largest detector for Linear Collider • Largest super conducting magnet • HCAL inside coil (3.5m radius) • Largest TPC (Tracker : 2m radius)

  3. GLD-Calorimeter • far from IP ~ separate particles in a jet • minimum geometrical overlap • 1 cm granularity : PFA • Large <=> cost = number of channels • flexibility in the component size • reliability in large area • small dead space

  4. GLD-Calorimeterdetector model • Scintillator strip CAL. • flexible in length (WLS Fiber R/O) • effective segmentation 1 x 1 cm • small photon sensor 2 1cm

  5. GLD-Calorimeterglobal design cv

  6. GDL-CALlayers at 90 • ECAL : R = 2.1 ~ 2.3 m (0.2m) : • 6 mm/layer ( 3 + 2 + 1)mm • 33 layers X0=28 • HCAL : R = 2.3 ~ 3.5 m (1.2m) : • 26 mm/layer ( 20 + 5 + 1)mm • 46 layers ~mint=5.5

  7. GLD-CAL layer ECAL HCAL

  8. GLD-CAL layer HCAL cross ECAL cross

  9. absorber active material Layers barrel/ec strip length N. R/O ECAL W 3mm scintillator 2mm 33/ 33 4cm? ~6M ch HCAL Pb 20mm scintillator 5mm 46/ 48 20cm? ~30M ch GLD-CAL parameters

  10. GLD-CAL R/D’s ECAL test with MAPMT

  11. GLD-CAL R/D’s cont’d Integrated lateral shower profile a typical event L1 L2 L3 L4 L5 L6

  12. GLD-photon sensor MPC R/D single photon eq. MPC100 laser beam spot

  13. GLD-CAL R/D’s cont’d Photon sensor R/D MPC of Hamamatsu 100 pixels 1,2,3,4,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,60 pixels GM at each pixel

  14. GLD-CAL R/D’s cont’d Beam Test at Fermilab 2007 to verify this idea and PFA R/D needed R/O electronics MPC

  15. GLD-CAL-collaborators • Kyongpook (D.Kim) : scintillator • JINR (P.Evtoukhovitch): SiPM • Kobe (K.Kawagoe) : MPC • Niigata (H.Miyata) : MPC pixel • Tsukuba (S.H.Kim,H.Matsunaga) : sim. • KEK (A.Miyamoto, K.Fujii) : sim. • Shinshu (T.Takeshita) : BT

  16. GLD-CAL • Open issues for ECAL • strip is sufficient enough for fine segmentation? <> PFA results which optimize the length of a strip • option • real 1cm x 1cm or smaller cell • if the problem is photon finding

  17. GLD-CAL • Open issue for HCAL • again strip length for hadronic interactions ( neutral hadron) • PFA studies • neutron hits >>> delayed hits • electronics timing

  18. GLD-HCAL a pion event digitized hits

  19. GLD-CAL engineering issues • support for HCAL by coil • support for ECAL by HCAL • cabling • installation

  20. summaryGLD-CAL • largest calorimeter • fine segmented & optimized for PFA • scintillator strip based • technique is proved • photon sensor R/D • electronics R/D • detailed design

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