CALPH: alpha counting system
Code: ALFA01-9501
Category: TL
Calph can manage till 4 PMT units independently through the provided software, with accurate time measure settable by the user until one week, for accurate and precise alpha counting
Calph is equipped with two single-channel analyzers with adjustable LLD values and a time coincidences unit which allow to discriminate decays of Th232 chain, rejecting fast coincidence pairs due to U238 chain.
Besides, it is equipped with an integrated High Voltage power supply for Photomultiplier.
Calph can be furnished together with all the necessary tools for a complete alpha counting laboratory:
- Sample holder/detector with housing for photomultiplier tube and scintillator discs, equipped with light safe enclosure and high voltage lock to prevent damages caused by accidental opening
- Photomultiplier tube equipped with divider and cables
- ZnS scintillator discs on mylar
References
Calph alpha particle counting system is already in use in many University and research centers in Italy and worldwide:
- Università degli Studi di Milano
- Istituto Nazionale di Fisica della Materia (INFM)
- Università degli Studi di Torino
- Università degli Studi di Lecce
- Università degli Studi di Bari
- Pastis CNRSM di Brindisi
- Department of Conservation and Restoration of Xian (China)t Museum
- Department of Archeology – National Museum and Library of Myanmar
Power supply: 230 Vac +/- 10% 50Hz (on request, it is available with any supply voltage)
Max Consumption: 50 VA
Operating temperature: 0-50ºC
Operating humidity: 10%-80%
Dimensions: control unit: 470,8 mm x 191,6 mm x 312,6 mm (h x l x p)
PMT housing: 220 mm height – base: 140 mm x 140 mm
Discriminator: smart–time coincidence unit. Possibility to set width and delay of the time coincidence window to differentiating between the alpha activities of two different radioisotopic chains (i. e. to evaluate the ratio of Th232 and U238 alpha activity in a sample).
Printer: integrated 42 characters per line impact dot matrix printer The printer has a speed of 1.0 lines/sec. The print method is impact shuttle. It prints measure reports with values in cpm.
Local Display: 2 lines of 20 characters per line.
HV power supply: integrated to supply PM tube. Voltage output up to -1.995V, max 2mA.
Additional Documents
CALPH - Brochure IT [143.1 kB]
CALPH - Brochure EN [150.3 kB]
CALPH - Manuale Utente IT [675.3 kB]
CALPH - User Manual EN [470.8 kB]
