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Intended for neutron counting applications with multiple detectors
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Dedicated to Nuclear Safeguards and nuclear material process monitoring in its life cycle
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Timestamp resolution of 10 ns
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Pulse pair resolution of 10 ns plus pulse width
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Minimum pulse width detection of 10 ns
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32 inputs on BNC connectors (TTL, 50 Ω)
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Single high-power high-voltage supply output (+2000 V @ 1 mA)
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Single high-power low-voltage supply outputs (5V @1.5 A and +-12V @ 500 mA)
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10/100T Ethernet and USB-2.0 interfaces
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Provided with readout software and web interface
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19” rack form factor, suited for stand-alone use as well
The new R7771B module replaces the obsolete R7771 and previous R7771B versions. This is a device boxed in a mechanics compliant to 19” racks and designed for performing neutron pulse trains recording independently on 32 channels. The device works in attended mode, where time‐stamped lists of input TTL pulses coming from a neutron detector are provided to an external computer to be recorded for further analysis.
The front panel HV output channel can provide the bias for the detector power supply, while a LV output channel (+5V on BNC connector) is also available to supply power for the preamplifier. On the rear panel, another LV output (+12V and ‐12V on 3‐pin connector) has been added to interface with CAEN A1421x preamplifier family. The internal CPU manages the board settings, the acquisition for attended operations, and the data transfer of the pulse train from each of the board channels to an external host PC for further analysis. The computational resources and data throughput allow the acquisition of a high total continuous input rate (up to 3×106 cps).
The R7771B device can be controlled by a point‐to‐point direct connection through the USB‐2.0 interface and by a remote network connection through the Ethernet 10/100T port. The acquisition, configuration, and data saving can be then controlled through the CAEN R7771 Control Software, which is available to the users.
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Technical Specifications
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PHYSICAL |
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CONNECTORS |
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MIN. PULSE WIDTH |
10 ns |
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PULSE PAIR RESOLUTION |
Pulse width + 10 ns |
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HVPS OUTPUT |
Single channel for the detector power supply:
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LVPS OUTPUT |
Preamplifier power supply channels:
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ON‐BOARD CPU |
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OPERATING MODES |
ATTENDED: The device works under full control of an external PC transmitting raw data for further analysis; time-stamped lists are saved to binary files compatible with PTR-32 format |
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PULSE TRAIN RECORDER |
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BUTTONS AND INDICATORS |
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COMMUNICATION INTERFACES |
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FIRMWARE |
Firmware can be upgraded via Web interface |
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SOFTWARE |
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POWER REQUIREMENTS |
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