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A1427

A1427 - Low noise fast current neutron flux preamplifier

Datasheet

Home Modular Pulse Processing ElectronicsPreamplifiersPreamplifiers - Detectors A1427

Photo of A1427
Photo of A1427
  • 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

The CAEN Mod.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 specifically designed to fit with A1427. The discriminator thresholds is settable from -1 to -100 mV via a 10 turn rotary handle with lock.

A1427 Kit configuration is also available, it includes the A1427 and the A1428 assembled together, both for fission chambers and for proton recoil detectors.


Ordering Options

Code Description
WA1427ALIXAA

A1427/28 ALIMENTATORE LOW NOISE

RoHS
WA1427CABFCA

A1427 Cabri Low Noise Fast Current Preamplifier for Fission Chamber

RoHS
WA1427CABPRA

A1427 Cabri Low Noise Fast Current Preamplifier for Proton Recoil

RoHS
WA1427FCAAAA

A1427 Low Noise Fast Current Preamplifier for Fission Chamber

RoHS
WA1427PRAAAA

A1427 Low Noise Fast Current Preamplifier for Proton Recoil

RoHS

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A1428

A1428

A1428 - Discriminator for Low noise fast current neutron flux preamplifier
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    Image
    Name
    FORM FACTOR
    NO. OF CHANNELS
    DESCRIPTION
    SENSITIVITY
    COMPATIBLE DETECTORS
    A1422H

    A1422H

    Single in-line package

    1

    Low Noise Fast Rise Time Charge Sensitive Preamplifiers (SIP)

    1/5/45/90/400/450<br>mV/MeV (Si)

    Silicon (Si)

    A1424

    A1424

    Desktop

    1

    Fast Charge Sensitive Preamplifier

    3.6 mV/fC

    Diamond

    A1422C/D

    A1422C/D

    Desktop

    8

    Low Noise Fast Rise Time Charge Sensitive Preamplifier

    5 (mV/MeV) (Si)

    He3 / BF3 Tubes

    A1422

    A1422

    Desktop

    1 / 4 / 8

    Low Noise Fast Rise Time Charge Sensitive Preamplifiers

    1/5/45/90/400/450<br>mV/MeV (Si)

    He3 / BF3 Tubes<br>Proportional Counters<br>Ionization Chambers<br>Segmented Silicon <br>Silicon (Si)

    A1429

    A1429

    Desktop

    64

    Charge Sensitive Preamplifier

    20/45/90/200/400<br>mV/MeV (Si)

    GEM Segmented Silicon

    A1427

    A1427

    Desktop

    1

    Low Noise Fast Current Neutron Flux Preamplifier

    FC: 700÷2500<br>(Trimmer adjustable)<br>PR: 500÷1500<br>(Trimmer adjustable)

    Fission Chambers<br>Proton Recoil

    A1422E/F

    A1422E/F

    Desktop

    2 / 4

    Low Noise Fast Rise Time Charge Sensitive Preamplifiers

    200 mV/MeV (Si)

    Silicon (Si)

    A1442

    A1442

    Desktop

    16 / 32

    Charge Sensitive Preamplifier

    Selectable 20/100<br>mV/MeV (Si)

    GEM Segmented Silicon

    A1421
    New

    A1421

    Desktop

    1

    Preamplifier and Discriminator for 3He tubes

    30 mV/fC on HiZ<br>(15 mV/fC on 50 Ω)

    He3 / BF3 Tubes

    R1443

    R1443

    19” rack unit

    32 / 64

    Preamplifier Unit for 3He tubes

    2.25 V/pC

    He3 / BF3 Tubes

    A1423B

    A1423B

    Desktop

    1

    Wideband Preamplifier

    Selectable From<br>+18 dB to +54 dB

    Diamond PMT<br>Scintillators<br>SiPM / MPPC

    A1426 CARDARELLI

    A1426 CARDARELLI

    Desktop

    1

    Matched Charge Preamplifier

    Up to 5 mV/fC

    Diamond

    A1436 / A1436A

    A1436 / A1436A

    Desktop

    1 / 8

    Differential Input Low Noise Transimpedance Amplifiers

    Programmable<br>10<sup>9</sup>/10<sup>8</sup>/10<sup>7</sup>/10<sup>6</sup>/10<sup>5</sup>/10<sup>4</sup>/10<sup>3</sup><br>(V/A), 10<sup>9</sup> V/A (A1436 only)

    Diamond PMT / Scintillators<br>Silicon (Si)

    A1425

    A1425

    Desktop

    1

    Fast Charge Sensitive Preamplifier

    3.6 mV/fC

    Diamond

    A422A

    A422A

    Desktop

    1

    Charge Sensitive Preamplifier with Timing

    5/30/60 mV/MeV (Si)

    Proportional Counters<br>Ionization Chambers<br>Silicon (Si)

    Image
    Name
    Form Factor
    Session
    pippo
    A1427

    A1427

    Desktop

    Amplifier

    Clarabella

    A1427 KIT

    A1427 KIT

    Desktop

    Kit: Amplifier + Discriminator

    Topolino

    A1428

    A1428

    Desktop

    Discriminator

    Minnie

    Technical Specifications

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    Packaging

    Shielded box, Dimensions:
    WxHxL: 91 x 139 x 39 mm; 91 x 119 x 39 mm (without connectors)
    WxHxL A1427CA models: 61 x 112 x 55 mm; 61 x 112 x 31 (without connectors)

    No. of Channels

    1

    Detector Input

    • SHV connector; accepts negative charge pulses, AC coupled, 50 Ohm input impedance.
    • A1427CA models: ATI INTERCO HN Connector 22323

    HV Input

    • SHV connector, up to 3 KV for the detector bias, RBIAS 200 kOhm.
    • A1427CA models: Itt Cannon 011-2049-040FB9 Terminal

    Test Input

    • LEMO connector, negative input, 50 Ohm input impedance;
    • GAIN = 1/100 of Detector IN

    Fast Out

    • LEMO connector, bipolar output, high impedance (must be externally terminated with 50 Ohm impedance);
    • Dynamic range -2 V÷+1.3 V max;
    • Total duration (negative and positive lobe) A1427FC 120 ns, A1427PR 160 ns;
    • Width Out negative lobe: A1427FC 27.5 ns FWHM, A1427PR 40 ns FWHM;
    • Risetime negative lobe ≤12 ns;
    • Measured with TEST IN negative pulse, -13 mVpp vs. GND, across 50Ohm, 10ns rise/fall time, 50ns FWHM, 100kHz frequency

    Energy Out

    • LEMO connector, non-inverting unipolar negative output, high impedance (must be externally terminated with 50 Ohm impedance);
    • Dynamic range 0÷-350 mV max;
    • Width Out 50 ns FWHM;
    • Risetime ≤19 ns;
    • Measured with TEST IN negative pulse, -13 mVpp vs. GND, across 50Ohm, 10ns rise/fall time, 50ns FWHM, 100kHz frequency

    GAIN Voltage

    Trimmer adjustable:
    • 700÷2500 on A1427FC;
    • 500÷1500 on A1427PR
    (referred to amplitude of FOUT negative lobe, with DET IN signal; with TEST IN input, GAIN = 1/100 of nominal value)
    FOUT/EOUT amplitude ratio:
    • A1427FC = 4
    • A1427PR = 5.6

    Output noise

    • ≤ 40 mV p.p. (measured with gain =1000 on FOUT A1427FC)
    • ≤ 30 mV p.p. (measured with gain =700 on FOUT A1427PR)
    • ≤ 7 mV p.p. (measured with gain =1000 on EOUT A1427FC)
    • ≤ 4 mV p.p. (measured with gain =700 on EOUT A1427PR)

    Power requirements

    • External power supply Switchbox FRA045-S12-4 (12 VDC, 3.75 A, 45 W);
      Universal Input C14 receptacle;
    • INPUT Voltage range 100- 240VAC 1.2A 50-60Hz. Inrush current 40A at 115VAC / 80A at 230VAC max. Dielectric withstand Input/output 3,000VDC.
    • OUTPUT Output voltage +12V. Ripple and noise 2% p-p max. Load regulation ±5% max. No load stand by power <0.5W@ 230VAC. Efficiency >=85% for CEC requirement. Hold up time 10ms at nominal line. Protections OCP, OVP, over power & short circuit.
    • GENERAL Std output connector Dc barrel jack. Std output cable/length UL1185, #18AWG / 5 ft.
    • ENVIRONMENTAL Operating temperature 0°C to +40°C. Storage temperature –20°C to +85°C.
    • STANDARDS Safety standards IEC/UL/EN60950-1, CE, CB. EMC EN55022 (CISPR 22) class B, FCC class B.
    • A1427CA models: TE 282834-5; 1 GND, 2 +12V

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    PI 00864500467 | REA: LU 102690

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