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Data acquisition
- Standard NIM electronics discriminator (Ortec 928) and coincidence (LeCroy 622) units.
- 8-bit ADC & Scaler unit designed and manufactured by Detection Technology Inc. Units are adjusted to record pulse heights corresponding to 1 - 8 simultaneous minimum ionising particles, i.e. muons.
- High voltage supplies partly commercial (Bertan) with home-made voltage dividers or home-made integrated high-voltage supply & divider units
- Computers Intel Pentiums (up-to 450 MHz and at least 2 Gbyte hard disks)
- UPS back-up securing data collection in case of passing mains drifts or cut-offs.
Scintillation detectors
- Scintillation plastic NE102A, maximum light output at 423 nm, size 0,5m ´ 0,5m´ 0,05m.
- Fishtail-shaped acrylic light guides.
- Optical grease BC-630 as optical connector.
- Scintillator housing water-tight stainless steel boxes, size 1,6m ´ 0,75m ´ 0,15m.
- Total weight with housing app. 60 kg.
Photomultipliers Hamamatsu R329-02
- Head-on type, 12 dynode stages.
- Circular borosilicate window with diameter 51 mm.
- Semitransparent bialkali photocathode, quantum efficiency ~25 %.
- m-metal magnetic shielding.
- Fast time response: pulse rise time typically 2.6 ns.
- Sensitivity range 300nm - 600nm, peak wavelength 420 nm.
- Cathode-to-anode voltage typically 1.7kV - 2.1 kV.
- Negative polarity output pulses, 50W impedance.
Pressure transmitter
- PTU 200 , made by Vaisala Oyj
- Pressure Range 500-1100 hPa
- Humidity measurement range 0.8-100% RH
- accuracy 3% RH (90-100% RH)
- Temperature mearurement range: -40 to +60°C
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