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6. Other Detector Technologies

JLC/NLC/TESLA have different detector options due to accelerator-parameter differences and different strategies.
Grand-design Options
Major Detector Options
  1. VTX

    • CCD (JLC/NLC/TESLA) ; smallest pixel size , thinnest , slow readout , sensitive to radiation damage

      . . . . . . Slowness may not be good for TESLA

    • CMOS Active Pixel ; small pixel size, thin, fast readout, radiation-hard, small chip-size

    • Hybrid Active Pixel ; modest pixel size, thick, fast readout, radiation-hard

  2. IT

    • Si-strip (JLC/NLC/TESLA)

    • SciFi . . . for better timing resolution.

  3. CT

    • Jet (JLC) . . . (Long) Wires are always troublesome ; Not a 3-D measurement.

    • TPC (NLC-L/TESLA) . . . Huge readout channel, Timing resolution for bunch-ID may be challenging for NLC.

    • Si-drift/Si-strip (NLC-SD) . . . less hit-redundancy, kink-track may be troublesome.

  4. CAL

    • Tile/fiber (JLC/NLC-L/TESLA-HCAL). . . fine granularity, modest cost, well-establised technique

    • W/Si + Digital (TESLA/NLC-SD) . . . ultimate granularity, very expensive (W/Si), developing technique

    • Crystal EM . . . coarse longitudinal granularity, excellent energy resolution, expensive, well-established technique.

     Other sub-detectors do not have arguing options.

Need to clarify what we must achieve at least and what we can do best,

with boundary conditions of budget, effort, time-span.

Full-simulation study heavily needed, and not enough at all so far.
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yoshiaki.fujii@kek.jp, July 10,2002 at 5th ACFA LCWS at Tokyo