CASCADE

a High-Rates Detector for Neutron Applications in Science and Research

An Entirely Modular Detector Concept

can be manufactured on industrial scales
large detector area feasible (> 1 m²) at < 10% blind area
time resolution < 1 ms (for TOF)
based on GEM technology (invented by CERN)

Modern, Highly Integrated ASIC Readout Electronics

individual readout channels
simple to scale
parallel processing of highest count rates

Suited For Highest Intensity Applications

CASCADE Detector,
200 mm x 200 mm,
stack of GEM-foils with 2D-readout-structure in the middle,
complete readout and histogramming electronics at the backside of the detector

Signal Rates Capacity

Potential of GEMs:
up to 10 MHz/cm²
Experimentally verified to date:
   > 2.7 MHz/cm²
   > 4 MHz on
      detector

Detection Efficiency

38% at 1.8 Angström predicted for 20 ¹⁰Boron layers coated on GEM-Foils
Measured 23% at 2.5 Angström using 8 layers of ¹⁰Bor
Custom optimisation for predefined band of wavelength possible
Black detector beyond 5 Angström

Spatial Resolution

feasible resolution:
1-5 mm depending upon counting gas, readout structure and detector design
Measured width: FWHM 2.6mm on 1.57mm stripes using Ar/CO₂ = 90/10 as counting gas at normal pressure

Master theses and
Staatsexamensarbeiten
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