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V1782

Octal Digital Multi Channel Analyzer

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Features

  • Eight independent 32k digital MCA in VME form factor
  • Perfectly suited for high resolution gamma ray spectroscopy with
    single and segmented HPGe, Clover and Silicon detectors and
    compatible with medium-fast scintillator like NaI, CsI, BGO
  • Software selectable coarse gain (x1, x2, x4, x8)
  • Jumper selectable x0.2 attenuation
  • 10 μs AC coupling jumper selectable for TRP detectors
  • Digital oscilloscope for an easy acquistion parameters setup and
    signal monitoring
  • Features Digital Pulse Processing for PHA, providing Energy and
    Timestamp in list mode
  • Software adjustable digital shaping filter, baseline restoration and
    fine gain
  • Online pile-up rejection and software dead time evaluation
  • Suited also for high count rate application
  • Configurable coincidence or anti-coincidence of the input analog
    signals for background rejection and anti-compton shield
  • VME and Optical Link communication interface
  • Drivers, libraries and API for Windows and Linux 32/64 bit
  • MC2Analyzer and CoMPASS software to manage the acquisition and perform basic spectrum analysis
More info
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3 Years Warranty
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3 Years Warranty
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Overview

The CAEN Mod.V1782 is the new Octal 32k digital MCA. Designed for high energy resolution semiconductor detector is perfectly suited for those application in which the number of input channels start becoming relevant such as when segmented HPGe, Clovers and silicon detectors are involved.
The V1782 provides four steps of software selectable coarse gain and two possible jumper selectable dynamical ranges (0.2-0.4-0.8-1.6 Vpp and 1-2-4-8 Vpp).
It is also compatible with Transistor reset preamplifier thanks to the jumper selectable 10 us AC coupling.

Like the other members of the x781 family, the V1782 integrates advanced firmware algorithm for the processing of any kind of exponential signal or coming from charge sensitive preamplifier and can be easily adapted to different detectors and application ensuring an effective processing even at high count rates.
These algorithms includes advanced tools for the baseline restoration and pile-up rejection.

Thanks to the multiple input simultaneous acquisition, the module is able to manage coincidence and anticoincidence logic between segment of the same detector or different detectors, allowing the user to take advantage of background rejection or anti-Compton techniques.

The V1782 provides at the same time energy, time stamp and, if required, digitized pulse in a configurable acquisition windows in order to perform further off line analysis.
Acquisition settings and simple analysis operation are performed using CoMPASS and MC2Analyzer software that provides energy spectra up to 32k channels. The spectra can be exported and imported in ASCII o N42.42 compliant files.

CAEN provides also the drivers for the supported communication interfaces, C and Labview libraries (CAENComm, CAENDigitizer, CAENDPP) demo application and utilities.

Technical Specifications

MECHANICAL

Form Factor: 2-unit wide VME 6U module
Weight: 800 g

ENVIRONMENTAL

Operational Conditions: 0 to 50°C Temperature Range
Compliance: EMC compliant

ANALOG INPUT

Number of Inputs: 8

Input Features:

  • BNC connector
  • Single ended, DC and 10 μs AC coupling hardware selectable
  • Impedance: 1 kΩ
  • Positive and negative signals accepted
  • Analog Coarse Gain: x1, x2, x4, x8 software selectable (Gain 1 = 1 Vpp); gain attenuation x0.2 by on-board jumper
  • Programmable DC offset adjustment on each input in the full-scale
    range
ADC

Resolution: 16 bits
Sampling Rate: 100 MS/s (simultaneously on each input)

DIGITAL SIGNAL PROCESSING
  • Trapezoidal filter for the energy calculation: adjustable rise time 0.02 to 40 μs; flat top 0.02 to 40 μs
  • Trigger and Timing filter based on integrative-derivative component (30-bit time stamp, 10 ns resolution, 10 s range, 64-bit extension by software, roll-over tracking event)
  • Trigger threshold adjustment
  • Digital fine gain: 1 to 2.2 in steps of 0.0001
  • Trapezoid tail correction; decay time 0.1 to 650 μs
  • Trigger time tag discrimination by RC-CR2 filter; shaping time 0.01 to 2.4 μs
  • Trigger hold-off (imposed dead-time) to prevent after pulses: 0 to 40 μs
  • Programmable Pile-up Guard duration: 0 to 80 μs beyond the end of the flat top
  • Baseline restorer: fast, medium, slow
OPERATING MODES
  • Pulse Height Analysis (PHA): 1k-2k-4k-8k-16k-32k pulse height histogram built at software level
  • List mode: pulse height and time stamp for each event
  • Oscilloscope mode: signal inspection of input pulses and internal filters outputs
TRIGGER MODES
  • Uncorrelated: each channel operates independently (based on channel self-trigger)
  • Correlated: coincidence/anticoincidence among channels and/or an external trigger (TRG-IN)
  • External: channels are triggered by external trigger only (TRG-IN)
FRONT PANEL I/Os
  • CLK-IN (3-pin AMPMODU II): AC-coupled differential clock input LVDS, ECL, PECL, LVPECL, CML (single-ended NIM/TTL adaptor orderable) Jitter < 100ppm requested
  • CLK-OUT (3-pin AMPMODU II): AC-coupled differential clock output
  • TRG-IN (LEMO): General purpose single-ended digital input Software programmable functions NIM/TTL, Zin = 50 Ω
  • TRG-OUT (LEMO): General Purpose Digital output Software programmable functions NIM/ TTL, Zin = 50 Ω
  • S-IN (LEMO): TTTReset/AcqStartStop digital Input NIM/TTL, Zin = 50 Ω
  • LVDS I/O (32-pin AMPMODU II): 16 general purpose differential LVDS I/O An input pattern from the LVDS I/O can be associated to each trigger as an event marker Multiple functions configurable by register
ANALOG MONITOR OUPTUT

12-bit / 100MHz DAC FPGA controlled
1 Vpp dynamics, 50 Ω termination
Configurable for test signals

COMMUNICATION INTERFACE

Optical Link
CAEN CONET proprietary protocol, Up to 80 MB/s transfer rate; Daisy chain capability by connecting up to 8 or 32 ADC modules to a single Optical Link Controller (A2818 or A3818 respectively)

VME
VME 64X compliant interface, Data transfer mode: BLT32, MBLT64 (70 MB/s using CAEN Bridge) CBLT32/64, 2eVME, 2eSST (up to 200 MB/s)

FIRMWARE

DPP-PHA firmware can be upgraded via VMEbus/Optical Link

SOFTWARE

Fully controlled by MC² Analyzer and CoMPASS spectroscopy software (up to 32k PHA histogram supported).
General purpose C libraries with demo samples available for developers Windows® and Linux® OS supported

CONSUMPTIONS

5.6 A @ +5V; 0.320 A @ +12 V; 0.180 A @ -12V

Compare

Compare with Multi Channel Analyzers.

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Accessories

A317
Cable assembly for Clock distribution 3-pin AMPMODU IV female terminations – 18 cm / 25cm
A318
Adapter for Clock signal FISCHER S101A004 male to 3-pin AMPMODU IV female – 10 cm
DT4700
Clock Generator and FAN-OUT
A952
Cable assembly 2.54mm 34 pin female to 2.54mm 34 pin female - 50 cm
A953
Cable assembly 2.54mm 34 pin female to two 2.54mm 34 pin female – 50 cm
A954
Cable assembly 2.54mm 34 pin female to two 2.54mm 16 pin female - 50 cm
A5818
PCI Express Gen 3 CONET2 Controller
A4818
USB 3.0 to CONET2 Adapter

Ordering Options

Code Description
WV1782XAAAAA V1782 - Octal 32K Digital Multi Channel Analyzer   RoHS

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