Designed to process signals generated by Photomultipliers
8 channel charge preamplifier and integrator
Dual sensitivity (-0.83 mV/pC and -8.3 mV/pC)
Built-in discriminator delivers:
Majority output
LVDS signal for arrival times detection
Sum outputs available
The CAEN Mod.N914 is a 8 channel charge preamplifier and integrator, implemented in a single-width NIM module. It is designed to process signals generated by Photomultipliers. The module is provided with LEMO 00 connectors for both input and output signals, except the T# output which is provided through a 16 pin flat cable connector. The Photomultiplier signal at the input is buffered and processed in several ways:
The OL# output provides the signal processed by a gateless charge preamplifier and integrator.
The OH# output provides the signal processed by a gateless charge preamplifier and integrator, followed by a 10x gain stage.
The OLSUM output provides the analog sum of the OL# outputs.
The OHSUM output provides the analog sum of the OH# outputs.
The ASUM output provides the analog sum of the CH# inputs.
The MALU output provides a step function (Majority) with a height proportional to the number of channels simultaneously over a threshold settable individually or globally.
The T_OUT# output provides a discriminator output converted into a LVDS signal to be sent to a TDC for arrival times recording.
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Packaging |
One unit wide NIM unit |
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Sensitivity |
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TDC output width |
250 ns ÷ 5 µs |
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Majority width |
250 ns ÷ 5 µs |
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Majority step amplitude |
40 mV/channel |
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Integrator time constant |
1.2 nF // 100 kΩ |
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ASUM out bandwidth |
150 MHz |
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Discriminator Sensitivity |
15 mV |