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Low noise fast current preamplifier and discriminator

A1427 KIT

Home Modular Pulse Processing ElectronicsPreamplifiersFor Fission Chambers and Proton Recoil detectors A1427 KIT

A1427 Kit contains a fast preamplifier (A1427) and a discriminator (A1428) assembled together. It is developed by CEA Saclay for the Cabri reactor in Cadarache and it is suitable for fission chambers, boron deposition proportional counters, 3He counters and proton recoil counters.

The A1427 Kit is designed to work with high counting rate and it is specifically studied to be not sensible to the external electromagnetic fields. CAEN provides two versions of the kit with different mechanics and connectors: one for desk use and one made for the Cabri reactor.

A1427 is a fast and low noise current preamplifier with AC coupled input. It hosts two outputs: EOUT (unipolar) that can be integrated to calculate the energy associated to the input signal and FOUT (bipolar) that can be used to calculate the rate of the input signal, discriminating the negative pole using the A1428 discriminator that is designed to fit with A1427. The discriminator thresholds is settable from -1 to -100 mV via a 10 turn rotary handle with lock.

The Kit is available in two different versions one for fission chambers (FC) the other for proton recoil detectors (PR).

We provide A1427 and A1428 separately and in the A1427 Kit configuration, that includes the A1427 and the A1428 assembled together, both for fission chambers and for proton recoil detectors.


Features

A1427 Preamplifier characteristics:

  • Fast non inverting preamplifier, negative output (EOUT)

  • Input impedance: 50 Ω AC coupled

  • Output high impedance (EOUT)

  • Bipolar output high impedance (FOUT)

  • Test input (TEST IN) impedance: 50 Ω, negative polarity

  • FOUT/DET IN gain (FOUT negative lobe):

    • FC version: 700÷2500

    • PR version: 500÷1500

  • FOUT/TEST IN gain: 1/100 of DET IN gain

  • Output noise (peak to peak) < 40 mV

  • Up to 3 kV detector bias voltage (HV IN)

  • Rbias: 200 kΩ

A1428 Discriminator characteristics:

  • Input polarity negative

  • Input impedance 50 Ω

  • Threshold -1 mV to -100 mV

  • Output: standard TTL signal

  • Maximum frequency 15 MHz for Fission Chamber

  • Maximum frequency 6 MHz for Proton Recoil


Ordering Options

Code Description
WK1427CABFCA

A1427KIT with A1427 Cabri Preamp. for Fission Chamber A1428 Cabri Discrimin. for Fission

 

(In production)

RoHS
WK1427CABPRA

A1427KIT with A1427 Cabri Preamp. for Proton Recoil + A1428 Cabri Discrimin. for Proton Recoil

 

(In production)

RoHS
WK1427FCAAAA

A1427KIT with A1427 Preamp. for Fission Chamber + A1428 Discrimin. for Fission Chamber

 

(In production)

RoHS
WK1427PRAAAA

A1427KIT with A1427 Preamp. for Proton Recoil + A1428 Discrimin. for Proton Recoil

 

(In production)

RoHS
Manual Download Compare

A1427 KIT: Manuals

Name
Revision
Format
File Size
Last Update
A1427 KIT Low noise fast current preamplifier and discriminator
1
pdf
1.26 Mb
20/06/2020

A1427 KIT: Download

Application Notes

Name
Revision
Format
File Size
Last Update
AN8616 - CAEN Preamplifiers selection guide
0
pdf
0.79 Mb
08/07/2024

Brochures / Flyers

Name
Revision
Format
File Size
Last Update
A1427 Kit - Low noise fast current neutron flux preamplifiers
1
pdf
3.26 Mb
12/09/2018

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