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AMS R ing I maging CH erenkov

AMS R ing I maging CH erenkov. J. BERDUGO CIEMAT, Madrid (Spain). PURPOSE: Precise measurement of the velocity of charged particles Measurement of the charge of the particles. Cherenkov radiation. Velocity. Charge Velocity. Particle. Cerenkov Radiator. Conical Reflector.

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AMS R ing I maging CH erenkov

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  1. AMS Ring Imaging CHerenkov J. BERDUGO CIEMAT, Madrid (Spain) • PURPOSE: • Precise measurement of the velocity of charged particles • Measurement of the charge of the particles Cherenkov radiation Velocity Charge Velocity Particle CerenkovRadiator Conical Reflector Electric Charge Photo- detectors AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  2. C H O Fe AMS RICH Performances: Test at CERN Accelerator Collision products: p, D, He4, Li6,… Velocity measurement: Accuracy of one part in a 1000 Charge measurement: Identification of different nuclei s (v)/v = 0.09% Ek/n=158 GeV/n Charge (Z) Velocicty (v/c) AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  3. 114 cm 47 cm 64x64 cm2 134 cm AMS RICH Main Elements • Dual solid radiator configuration • Low refractive index aerogel • Sodium fluoride • Conical reflector • Reflectivity > 85% • Photon detection plane • Photomultiplier matrix (10880 channels) • Spatial granularity: 8.5 x 8.5 mm2 AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  4. 50 mmfilter (stainless steel) Venting Valve Halkey Roberts C770RP Interface blocks (Peek) AMS RICH Radiator Configuration for the Acceptance Vibration Test NaF Aerogel AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  5. AMS RICH Radiator: Container Assembly and Test Assembly of the Radiator Container under the Lower TOF Structure Vibration Test Lower TOF and RICH Radiator Container AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  6. AMS RICH Reflector MANDREL The reflector is made by a replica technique Flight Unit AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  7. AMS RICH Detection Plane Array of 680 photomultiplier tubes • HAMAMATSU 7600-00-M16 • 4 X 4 pixels • Each pixel is 4 x 4 mm2 • Gain ~ 106 @ 800 V • QE  20 % in the range 250-600 nm 10880 sensors FRONT-END ELECTRONICS • Acquisition circuit (16 channels) • Resistor Divider for HV Mounted on 4 small PCB located at the basement of the phototube • HV Isolation • Polycarbonate housing • Dow Corning injection AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  8. 55° -35° AMS RICH Detection Plane: Thermal Test of Photomultipliers The PMT´s will stand a wide range of Temperatures (-35O to 55O) AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  9. Light Guide FE Electronics Nylon wires Photomultiplier Optical Pad Housing Shielding AMS RICH Detection Plane: Unit cell Mechanical Assembly AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  10. AMS RICH Detection Plane: Unit cell Mechanical Test Two unit cells were tested to reach thebreakage point The wires accomplished 38 g No breakage occurred No degradation on the optical contact AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  11. AMS RICH Detection Plane:Unit cells arranged in GRIDS Unit Cells Internal beams HV Patch panel Stiffness skin Read-out boards U-Beam AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  12. AMS RICH Detection Plane: Grid Assembly Internal beams Assembly Jigs Unit Cells AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  13. AMS RICH Detection Plane: Grid Internal Cabling HV connection Read-out kapton cables Read-out boards HV Patch panel Stiffness skin AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  14. AMS RICH Detection Plane: Vibration and TVT Vibration Test Rectangular Grid (143 units) Thermal Vacuum Test Rectangular Grid (143 units) AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  15. AMS RICH Detection Plane: Functional Test Online/SlowCtrl Software Validation: • Read-out Communication Protocol • HV Power Supply Control • Software for Calibration and Data taking • Temperature Sensors Read-out HV Power Supply Optical Fiber System JIN-R Characterization Data: • HV OFF: • Pedestals and electronic noise • HV ON: • Dark Current • Gains • Efficiencies AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  16. AMS RICH Electronics: Read-out System 12 electronic boards located on the edge of the detector structure • Generation of control signals to drive the front-end electronics • Monitoring and setting of parameters • Processing of the signal • Online calibration JINR RDR3 RDR2 Produced at CRISA 21 Units (4 QM +12 FM + 5 FS) AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  17. AMS RICH Final Assembly: Grids in the Main Structure AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

  18. SUMMARY • The RICH detector has been validated by testing all the critical elements under different external conditions • Two test beam data campaigns have demonstrated that the required capabilities of the detector are reached • The detector is close to final completion and on schedule for integration at CERN AMS-RICH Detector. J. Berdugo – CIEMAT (Madrid, Spain)

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