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Progress of the Forward Calorimeter R&D. Presented by: Igor Emeliantchik. Progress of the Forward Calorimeter R&D. LCAL Status D iamond- T ungsten Version Results of Zeuthen Group First Results of Minsk Group Heavy Crystal Version LAT Status Silicon Sensors Results of Prague Group

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Progress of the forward calorimeter r d

Progress of the Forward Calorimeter R&D

Presented by: Igor Emeliantchik


Progress of the forward calorimeter r d1
Progress of the Forward Calorimeter R&D

  • LCAL Status

    • Diamond-Tungsten Version

      • Results of Zeuthen Group

      • First Results of Minsk Group

    • Heavy Crystal Version

  • LAT Status

    • Silicon Sensors

      • Results of Prague Group

      • Zeuthen Silicon Facilities

    • Laser measurement of the LATdetector displacement



Test setup
Test Setup

Heavy Crystal Version of LCAL

Cosmic Telescope

Alternative: Ru-Source


Lightyield

fiber

readout

direct

readout

~ 25 %


Cross talk
Cross Talk

fiber painted with black paint

How much light do fibers see from other crystals


Cross talk1
Cross Talk

cosmics

?

but ….


Preprototype silicon sensors prague sensor structure
Preprototype Silicon Sensors (Prague) Sensor Structure

Cross section

Bottom view

Active area cca 0.25 cm2


I-V curves:

Vbreak-down  Vop

Ileak @ Vop < cca 30 nA/cm2 nornalized for temperature 20 C


used frequency 10 kHz

Vfull-depletion: substrate resistivity calculation


Zeuthen Silicon Facilities

  • At DESYZeuthen we are able to perform (class 10k clean room):

  • Ultrasonic wire bonding (Au, Al, down to 17.5 µm wires)

  • Glueing with high mechanical precision and/or special hardening procedures (silver epoxies)

  • Measurements of single and double sided sensors on different probe stations

  • long term measurements (darkness, special atmosphere: N2 or similar)

  • chip testing (delivered probe cards can be adapted)

  • additional: electronics workshop with automatic SMD placement and soldering tools

  • mechanical workshop with NC machining/milling

  • at DESY Hamburg a ‘state of the art’ programmable wire bonder

  • Companies / Institutions we are used to work with:

  • - Sensors: CiS Erfurt (D), Micron Ltd. (UK), SINTEF Oslo (N), Hamamatsu (J)

  • chip design: IDE AS, Oslo (N) and ASIC Laboratory of University of Heidelberg (D)

  • probe cards: Wentworth Deutschland GmbH, München (D)

  • high precision printed circuit boards: Würth GmbH, Roth am See (D), Optiprint (CH)

  • thick film hybrids: Elbau GmbH, Berlin (D)

Wolfgang Lange, DESY Zeuthen: Silicon Detector Projects Kraków, 10-Oct-2003




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