TWiki> CALICE Web>SiWEcal>SiWActivities (revision 3)EditAttachPDF

Present and past activities

Physics prototype

A small prototype Si-W ECAL was constructed to test the feasibility of this technique. It has a transverse size of 18x18 cm2, and 30 layers of silicon detectors. The silicon detectors were segmented with a granularity of 1x1 cm2, giving a total of around readout 10,000 channels.

This prototype was exposed to test beams during the years 2006-2008, at the physics laboratories at DESY, CERN and FNAL. Beams of electrons, positrons, pions and muons were used.

The response to electrons has been measured, and showed that the detector had a good linearity, and a sufficiently good energy resolution. It behaved as expected from GEANT4-based computer simulations developed within the group. It has therefore validated the general principles of such a detector.

Studies of pion interactions have concentrated on the comparison of different simulation models of hadronic interactions with the collected data.

Technological prototype

At present (2010) a second prototype is being constructed, which aims to address the issues connected with the production of a full-scale ECAL, and its integration into a full detector. This includes:

  • the mechanical structure (made of carbon fibre composite) needed to support the tungsten and silicon elements
  • the development of reasonably priced silicon sensors with improved characteristics
  • a new generation of very low power front-end electronics chips (which will treat the electronics signals from the silicon within the ECAL volume)
  • the integration of all pieces into detector slabs
  • cooling systems to extract generated heat
  • a data acquisition system to read, save and analyse the collected data
This prototype will be tested in particle beams in the coming years (2011-)

-- DanielJeans - 17-Jun-2010

Edit | Attach | Watch | Print version | History: r4 < r3 < r2 < r1 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r3 - 2010-06-21 - unknown
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    CALICE All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2021 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
or Ideas, requests, problems regarding TWiki? use Discourse or Send feedback