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CSP10 … 13

Charge Sensitive Preamplifier

User Manual

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Copyright FAST ComTec GmbH

Grünwalder Weg 28a, D-82041 Oberhaching

Germany

Version 1.0, September 17, 2009

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Summary of Contents for CSP10

Page 1: ...CSP10 13 Charge Sensitive Preamplifier User Manual Copyright FAST ComTec GmbH Gr nwalder Weg 28a D 82041 Oberhaching Germany Version 1 0 September 17 2009...

Page 2: ...ing insurance to FAST ComTec is the responsibility of the Costumer except for defects discovered within 30 days after receipt of equipment where shipping expense will be paid by FAST ComTec Copyright...

Page 3: ...1 3 1 General 3 1 3 2 Front Panel Rear Panel 3 1 4 Installation 4 1 4 1 Noise Consideration 4 1 4 2 Detector Bias 4 1 5 Operating Instructions 5 1 5 1 General 5 1 5 2 Test Input 5 1 5 3 Initial Setup...

Page 4: ...ve Never connect the detector when the high voltage is applied Increase or decrease the high voltage only at a very slow rate Observe the output of the CSP1X during bias voltage change with an oscillo...

Page 5: ...polarity pulse ideal for energy spectroscopy The high charge rate capability of the design is evidenced by an energy rate capacity of greater than 10 5 MeV per second when used with silicon detectors...

Page 6: ...Introduction ComTec GmbH 1 2...

Page 7: ...MS 200 electrons 0 03 femtoCoul Equivalent noise in silicon 1 7 keV FWHM Equivalent noise in CdZnTe 2 4 keV FWHM ENC slope 4 electrons RMS pF Gain see table 1 Rise time 7 ns see table 1 Maximum charge...

Page 8: ...m the detector capacitance leakage current and dielectric losses will add to this figure Pulse rise time defined as the time to attain 90 of maximum value has a linear relationship with input capacita...

Page 9: ...ion describes the functions of the controls and connectors located on the front and rear panels of the Model CSP10 13 It is recommended that this section be read bevor proceeding with the operation of...

Page 10: ...or alternatively the value of R reduced to provide an voltage drop The latter will cause the 0 pF noise of the preamplifier to increase but this will usually be insignificant compared to the noise ge...

Page 11: ...o as to give a reference peak signal in his data spectrum at a convinient location so as to normalize multiple detectors This input does provide a resistive terminating impedance 5 3 Initial Setup 1 C...

Page 12: ...ll system line plugs into the same output Or are the baseline fluctuations of ramdom frequency between 10 Hz and 15 000 Hz The area may be too noisy causing microphonic problems If high frequency nois...

Page 13: ...has a duration of approximately a couple s so the expected rise time of the charge sensitive preamplifier output will be at least that long The output waveform of the CSP10 13 using a capacitively co...

Page 14: ...Theory of Operation Detailed Circuit Description ComTec GmbH 6 2 high voltage path with filter circuit and power supply circuitry...

Page 15: ...Appendix Detailed Schematic of the CSP10 13 ComTec GmbH 7 1 7 Appendix 7 1 Detailed Schematic of the CSP10 13...

Page 16: ...Appendix Personal Notes ComTec GmbH 7 2 7 2 Personal Notes...

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