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Instrumentation

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CANBERRA NDA instrumentation for safeguards ranges from systems for simple gross gamma and neutron measurements to highly sophisticated spectroscopic isotope identification systems and multiplicity neutron counters.

IMCA - InSpector Multichannel Analyzer

IMCA - InSpector Multichannel Analyzer

Features

  • Provides measurement/confirmation of uranium enrichment using the enrichment meter technique
  • Based on Brookhaven/Los Alamos designs for use by the IAEA
  • Provides complete functionality of IAEA PMCN* and PMCG** procedures
  • 239Pu detection levels <1 mg
  • Available with following detector types:
    • 241Am seeded NaI(Tl) detector (both characterized and uncharacterized for temperature drift)
    • Normal NaI(Tl) detectors
    • HPGe detectors
  • Available in general user or special IAEA format

* Portable multichannel analyzer with NaI detector (IAEA/SG-NDA 5).
** Portable multichannel analyzer with HPGe detector (IAEA/SG-NDA 13).

IMCA - InSpector Multichannel Analyzer

JSR-12 Neutron Coincidence Analyzer

JSR-12 Neutron Coincidence Analyzer

Description

The JSR-12 Neutron Coincidence Analyzer separates coincidence neutron events from random neutron events, and thus provides a method of counting neutron signatures from spontaneously fissioning isotopes or induced fission from fissile isotopes. At the conclusion of each counting interval (operator selected), the unit provides information on total counts, reals plus accidentals and accidentals as displayed on the front panel. Most significantly, it does this without substantial deadtime by a unique technique in which a new coincidence gate is started for each neutron event presented at the input.

The JSR-12 has an internal, battery-backed time-of-day and day-of-year realtime clock and data RAM which permits time and date marking of all stored data for power-down storage of up to 3000 data runs. The firmware resides in EPROM.

JSR-12 Neutron Coincidence Analyzer

Features

  • Low power for sealed case
  • Wide input power supplies for 110/220 V operation
  • Standard RS-232C serial port for total computer control
  • LCD alphanumeric display for menu-driven operator setup
  • Internal clock for date/time tagging of all data
  • Automatic non-volatile storage for 3000 data runs
  • 4 MHz internal clock
  • Internal burst pulser provides complete self test capabilities
  • Count gate output for control of external data acquisition electronics
  • Buffer status command to insure no loss of data on long runs
  • Authorized for routine inspection use by the International Atomic Energy Agency (IAEA)
  • Meets European Union EMC and safety requirements
JSR14 Neutron Analysis Shift Register

JSR14 Neutron Analysis Shift Register

Description

The JSR-14 Neutron Analysis Shift Register is a portable, fully computer controlled neutron analyzer that provides both neutron coincidence and multiplicity capability that is selectable through use of the provided setup software. The JSR-14 functions as a direct replacement of the CANBERRA JSR-12 Neutron Coincidence Analyzer and the 2150 Multiplicity Module. The JSR-14 is based on a Los Alamos specification and shares the same chassis and form factor of the CANBERRA InSpector Multi-Channel Analyzer. The JSR-14 is fully compatible with existing software operating with either the JSR-12 or CANBERRA 2150 Multiplicity Module. The JSR-14 supports the same JSR-12 battery backed storage of system settings and 3000 data runs with time and date stamping of all data points by the system real-time clock. Also, the JSR-14 has the ability to operate in one of three different high voltage modes for portable and facility installed neutron counting applications. In addition, the JSR-14 can be powered with an ac charger/adapter using facility provided ac power, or operated with the unique "Ping Pong" camcorder battery system found on the CANBERRA InSpector. When using ac power, the JSR-14 is protected from power loss for three hours by the use of a battery in the spare battery port. The memory buffer and hardware settings are protected by a lithium battery that is designed to operate for five years and easily replaced. Another feature is a programmable long delay of 1 and 4 milliseconds providing compatibility with 2150 multiplicity and JSR-12 coincidence settings.

JSR14 Neutron Analysis Shift Register

Features

  • Combines multiplicity capabilities with traditional coincidence counting at one low price
  • Operates in selectable JSR-12 or Multiplicity mode (CANBERRA 2150)
  • Is fully computer controlled
  • Similar to the CANBERRA InSpector™ in form factor
  • Based on the Los Alamos design
  • Like for like replacement of JSR-12 when operating in the JSR-12 mode
  • Uses same JSR-12 battery backed RAM for storage of data points and systems settings
  • Supplied control software used for setup and acquisition is easy to learn, based in Visual Basic®, and is compatible with Windows® 95 and NT® operating systems
  • Can operate from facility mains with battery in reserve or with batteries in "Ping Pong" mode
  • Configurable to operate with high voltage operative after power is lost and restored without rebooting system software
  • Selectable long delay of 1 or 4 ms provides optimal counting conditions for both coincidence or multiplicity applications
  • Battery operation, small size and light weight makes it ideal for portable applications
  • Special features allow for installed operation as well
JSR15 Handheld Multiplicity Register (HHMR)

JSR15 Handheld Multiplicity Register (HHMR)

Description

The JSR-15 Handheld Multiplicity Register (HHMR) is a handheld shift register/multiplicity circuit intended for neutron counting applications. As a shift register the instrument counts and records total number of pulses and the time correlation of the pulses to provide coincidence timing. Multiplicity distributions of the coincident events are recorded as well. The JSR-15 has an internal clock rate of 50 MHz and is therefore capable of handling high count-rate applications in nuclear safeguards, nuclear waste assay, and process monitoring. The JSR-15 has been tested up to a count rate of 20 MHz using the NDA 2000 software, ensuring that the shift register will not be the limiting factor in any current or near-term practical counting situations.

The JSR-15 has built-in batteries, a built-in charging circuit, and a battery monitoring circuit. The instrument can run for up to eight hours on a single charge, when operated in battery-save mode with a single JAB-01 charge amplifier/discriminator. The battery capability, along with the compact size and light weight make the instrument extremely portable.

Two interface mechanisms are available on the JSR-15. In addition to the typical software interface through a notebook or suitable computer, the unit has a front panel push-button LCD display. Through the front panel interface the user may change the setup parameters (count time, high voltage, gate width, pre-delay, etc.), start and stop acquisitions, and view the measurement results. An estimate of the battery level is displayed on the LCD display, and a separate menu option allows for checking battery diagnostics. The LCD display can be controlled for efficient use of the battery.

The software interface is compatible with the INCC (IAEA Neutron Coincidence Counting) and NDA 2000 software packages. The JSR-15 utilizes a USB pipeline for communication with a computer, in place of the older RS-232 serial port. (The USB port also supplies power, thereby reducing the drain on the battery.)

The input to the JSR-15 can be in the form of TTL pulses via coaxial cable or differential pulses via a twisted pair cable. The instrument also has four auxiliary scalers, two of which are available as differential inputs. In addition the unit supports fast accidentals. The JSR-15 contains a user-programmable High Voltage (HV) power supply and a 5 V supply that can provide bias and power to the pre-amplifier/discriminator boards.

JSR15 Handheld Multiplicity Register (HHMR)

Features

  • Fast clock rate for high count-rate applications (>10 times that of pre-existing instruments)
  • 512 channel histogram of multiplicity data
  • Battery-operated with extended battery life
  • Compact size and light weight for greater portability
  • USB communications
  • Both TTL and differential input options
  • Compatible with the INCC (IAEA Neutron Coincidence Counting) and NDA 2000 software packages
  • Multi-Instrument Collect (MIC) compatible
  • Applications include: Nuclear Safeguards, Process Monitoring, Nuclear Waste Assay
  • Complies with current EU directive for CE marking and current FCC(UL)/CSA 61010-1 directives for NRTL certification