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Table 5.3 Detector characteristics

Channeltron type CEM KBL 310 IPP*) CEM KBL 510 IPP*)
Producer Dr. Sjuts Optotechnik GmbH, Goettingen, Germany
http://www.sjuts.com/
Size 3.6x13x32 mm 5.6x13x32 mm
Entrance opening 3x10 mm 5x10 mm
Operating voltage max. 3.5 kV
Gain for particle intensity ~105 s-1 108 electrons/pulse
Pulse height resolution < 40 %
Pulse width FWHM ~ 8 ns
Maximal operational rate in pulse counting mode 106 counts/s
Dark count rate (above equivalent threshold of  2x106electrons) < 0.02 counts/s

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*) Channel electron multipliers of these types were specially designed for CNPA detector system. The application of detectors with different size of entrance opening allowed to optimize the CNPA energy characteristics.