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JCS Nuclear Solutions

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Europa House,
Barcroft Street,
Bury,
Lancashire,
BL9 5BT,
United Kingdom

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Products

RMS30

RMS30

Flexibility underpins the operation of the RMS30 where sample time, counting period, alarm thresholds (per probe) can be defined by the operator.
The RMS30 can be portable (battery-powered) or mains-powered, bench or wall-mounted, have variable cable lengths for probes and even a remote alarm module to accommodate a multitude of measurement scenarios.
The design philosophy behind the instrument is to allow the operator to use a particular probe type (with single or dual channel measurements), or the flexibility to specify a different detector type. The RMS30 allows the operator to define how the probe data is displayed in real-time (sV/h, CPS or rem/h) and also how the data is then stored in the internal memory. All logged data can be accessed via USB to a PC where information is stored in a simple to manage spreadsheet.
GMS595

GMS595

Developed in partnership with AWE the GMS595 wide-range gamma dose rate monitor combines the measurement range of a suite of gas-filled detectors into a single hand-held instrument.
Set to be the new standard gamma dose-rate instrument across site, the GMS595 is capable of accurately measuring dose-rates from nSv/hr to Sv/hr.
It is simple to operate, quick to set up and environmentally stable.
GMS310

GMS310

The GMS310 Core Gamma Logger is a handheld Gamma Spectrometer designed to detect naturally occurring gamma radiation.
The GMS310 offers the ability to log elemental concentrations of Uranium, Thorium, and Potassium by means of spectral analysis of gamma emissions from core materials. It also allows the operator to add user/site defined ROI (regions of interest) in 3 additional channels available on the instrument and gives a total gamma count.
GMS312

GMS312

The GMS312 Core Analyser is a Rolling Gamma Spectrometer designed to detect naturally occurring gamma radiation. Cores from 3 1/2in to 12in can be accommodated.
The GMS312 offers the ability to log elemental concentrations of Uranium, Thorium, and Potassium by means of spectral analysis of gamma emissions from core materials. Data can be displayed in either API units or counts in six user defined Regions of Interest plus gross gamma count.
There two measurement modes; either Dynamic or Static. In the Dynamic mode, continuous measurements are made whilst the GMS312 is rolled along the core at a preset speed. In the static mode, the GMS312 is moved to each location and a static measurement made. In each mode, the depth is displayed.
ED3

ED3

The ED3 Active Extremity Dosimeter provides monitoring of Hp(0.07) for betas and gammas on the extremities.
Monitoring the extremities is extremely important when handling radiopharmaceuticals, in cardiology, oncology and glove box work as whole body dose may underestimate the extremity dose, especially when there are high dose gradients.
GMS411

GMS411

The GMS411 MediScint is a four probe system used to detect and track the flow of a low energy radionuclides injected into a patient.
This practice is used to monitor blood flow in muscle, fat and tissue and falls within the clinical field of Endocrinology.
The system is made up of a single bench-top unit which handles the running of the probes, real-time display and data storage. The instrument is capable of accepting up to 4 custom designed smart probes and will automatically detect which probe is plugged into which of the 4 sockets. Making it easy for the clinician to identify where each probe is placed, the position can also be
The system is made up of a single bench-top unit which handles the running of the probes, real-time display and data storage. The instrument is capable of accepting up to 4 custom designed smart probes and will automatically detect which probe is plugged into which of the 4 sockets. Making it easy for the clinician to identify where each probe is placed, the position can also be labelled on the instrument (upper left abdomen for example).
GMS1800a

GMS1800a

The GMS1800a can be used with industry standard Alpha and Beta detector drawer units (such as the AEA Technology I Harwell Instruments types ‘ADU’ and ‘SDU’, 0744, 0771 and 0772), or with other instruments providing digital pulse output signals.
The Laboratory Counter is a microprocessor based unit which may be used to count digital pulse signals over a range of user selectable counting periods. It is a compact and robust unit suitable for laboratory or field use.
GMS1800a is powered either by an internal rechargeable battery or externally by a mains supply unit, which recharges the battery at the same time. The instrument can also operate from a 12V DC source such as a vehicle battery, making it convenient for mobile field surveys.
The unit provides two counting channel inputs and displays the accumulated counts in each channel over a user- selected counting period. The unit may alternatively display the count difference between the two input signals.
GMS1800b

GMS1800b

The GMS1800b Laboratory Counter can be used with most common types of Geiger or Scintillation radiation detectors.
Measurement results are displayed on a large backlit LCD display. The Laboratory Counter also provides an audible indicator, which emits short clicks at lower count rates, and may also be used as an alarm indicator in rate meter mode.
The Laboratory Counter may also be used to count digital pulse signals from standard Alpha and Beta detector drawer units (such as the AEA Technology types ‘ADU’ and ‘BDU’, 0744, 0771 and 0772), or from other instruments providing digital pulse output signals. Two independent digital inputs are provided.
The GMS1800b Laboratory Counter is powered either by an internal rechargeable battery or externally by a mains supply unit, which recharges the battery at the same time. The instrument can also operate from a 12V DC source such as a vehicle battery, making it convenient for mobile field surveys.
bMCA-U

bMCA-U

bMCA-U is a compact, digital Multi-Channel Analyser (MCA), which is able to perform Pulse Height Analysis (PHA) of the signal produced by a standard 14-pin standard photomultiplier coupled to a scintillation detector such as NaI(Tl), LaBr3 (Ce), LaCl3(Ce), etc.
The device is used for obtaining an energy spectrum from the photon radiation detected by the scintillator, and can be easily linked to a typical PC or notebook via a standard USB port for data transfer and further analysis.
The bMCA-U is provided with our standard software package that allows the user to control the device, and to acquire and visualise the energy spectrum. The software incorporates an advanced and easy-to-use “discovery” function that can be used to automatically detect all the bMCA’s (USB or Ethernet) on your network that are available for connection.
bMCA-E

bMCA-E

bMCA-E is a compact, digital Multi-Channel Analyser (MCA), which is able to perform Pulse Height Analysis (PHA) of the signal produced by a standard 14-pin standard photomultiplier coupled to a scintillation detector such as NaI(Tl), LaBr3 (Ce), LaCl3(Ce), etc.
The device is used for obtaining an energy spectrum from the photon radiation detected by the scintillator, and can be easily linked to a typical PC or notebook via a standard USB port for data transfer and further analysis.
The bMCA-E is provided with our standard software package that allows the user to control the device, and to acquire and visualise the energy spectrum. The software incorporates an advanced and easy-to-use “discovery” function that can be used to automatically detect all the bMCA’s (USB or Ethernet) on your network that are available for connection.
bPAD

bPAD

The bPAD is an intelligent, compact Single-Channel Analyzer. Unlike traditional designs, this device is fully digitally controlled via USB: no scope or messing with screwdrivers is necessary. A simple PC application allows all the parameters (High Voltage level, amplification factor, discriminator thresholds) to be quickly set. More than that, a pseudo PHA mode is implemented, allowing to acquire an spectrum in order to set the discriminator window from the peak of interest. All the settings are stored in permanent memory, so the device can function in standalone mode every time the power is applied.
The device contains a Preamplifier-Amplifier-Discriminator with TTL digital output. The bPAD also includes its own high voltage power supply for operating standard 14-pin photomultiplier tubes, which are commonly used with scintillator-type radiation detectors (e.g. Plastic, NaI(Tl), LaBr, CeBr, etc).
bPAD+

bPAD+

The bPAD+ is an enhanced version of the bPAD intelligent Single-Channel Analyser. This device adds an extra analog pulse output, which can be connected to an external MCA for monitoring purposes. Being fully digital, the bPAD+ benefits from the same advantages of the bPAD:
The bPAD is an intelligent, compact Single-Channel Analyzer. Unlike traditional designs, this device is fully digitally controlled via USB: no scope or messing with screwdrivers is necessary. A simple PC application allows all the parameters (High Voltage level, amplification factor, discriminator thresholds) to be quickly set. More than that, a pseudo PHA mode is implemented, allowing to acquire an spectrum in order to set the discriminator window from the peak of interest. All the settings are stored in permanent memory, so the device can function in standalone mode every time the power is applied.
Topaz-Pico

Topaz-Pico

TOPAZ-Pico is a compact, stand-alone digital Multi-Channel Analyser (MCA), which is able to perform Pulse Height Analysis (PHA) of the signal produced by a standard scintillation detector such as NaI(Tl), LaBr3 (Ce), LaCl3(Ce), etc.
The device is therefore useful for obtaining the energy spectrum from the photon radiation detected by the scintillator, and can be easily interfaced to a typical PC or notebook via a standard USB port for further data transfer and analysis.
The MCA is provided with a basic software package that allows to control the device, and to acquire and visualise the energy spectrum. The software incorporates an advanced and easy-to-use “discovery” function that can be used to detect automatically all the BrightSpec MCAs (bMCAs-USB, bMCA-Ethernet and TOPAZ-Pico) in the neighbourhood of the PC that are available for connection.
Topaz-HR

Topaz-HR

Topaz-HR is a compact, stand-alone digital Multi-Channel Analyzer (MCA), which is able to perform Pulse Height Analysis (PHA) of the signal produced by high resolution gamma-ray semiconductor detectors, such as Hyper Pure Germanium Detectors (HPGe). Such detectors are commonly used in high-resolution gamma-ray spectrometry, a technique vastly implemented in any advanced radio -analytical laboratory or as part of comprehensive nuclear analytical methods.
The MFAx1.3

The MFAx1.3

This extremely versatile digital analyser offers a complete real-time Pulse Shape Discrimination (PSD) solution for scintillation detectors with Multi-Channel Analyser (MCA) Pulse Height Spectra (PHS) analysis. The analyser has applications in coincident and multiplicity counting, security and safeguards, mixed-field assay and imaging.
The system can function with or without a host PC via an Ethernet connection. The PC connection affords the use of the PC-based Graphical User Interface (GUI) where system configuration, auto-calibration and the ability to analyse PSD and PHS data can be performed. When functioning independently (i.e. without a host PC) separate digital TTL outputs are available for analysis using secondary diagnostic instrumentation such as a coincident counter. The neutron and gamma TTL outputs toggle according to the event type, have a high real-time throughput, and are time correlated with the incident event.
The MFAx4.3

The MFAx4.3

This extremely versatile digital analyser offers a complete real-time Pulse Shape Discrimination (PSD) solution for scintillation detectors with Multi-Channel Analyser (MCA) Pulse Height Spectra (PHS) analysis. The analyser has applications in coincidence and multiplicity counting, security and safeguards, mixed-field assay and imaging.
The analyser can function with or without a host PC. In stand-alone mode, separate digital TTL outputs for gamma and neutron events are provided from each channel for analysis using secondary instrumentation such as a coincidence counter. These outputs have a high real-time throughput and are synchronised in time with the incident event.
NMS017NG3

NMS017NG3

The NMS017NG3 is the latest generation of neutron monitor from John Caunt Scientific Ltd. It is a battery-powered hand-held neutron survey monitor that provides ambient dose equivalent measurements from thermal to 14MeV neutrons.
Ease of use and deployment underpin the design philosophy of the NMS017NG3 and has seen this instrument adopted as the industry standard deployed across the majority of civil nuclear sites, AWE, MoD as well as many academic, research and medical establishments.
This latest neutron monitor incorporates a digital display, providing a user-friendly visual display of dose rate as well as numeric feedback. The LCD display can be read in all light conditions and has vastly improved the battery life (>120hrs). Measurement modes include dose rate, accumulated dose, count rate and various count and time modes for integrated measurements.
Pure Polyethylene Neutron Shielding

Pure Polyethylene Neutron Shielding

JCPEP is a pure, high molecular weight, polyethylene neutron shielding, frequently used as a moderator where it is desired to slow fast neutrons down to thermal energies for experimentation.
In these applications, it is highly desirable to maximise the hydrogen content and minimise any impurities, especially those that might absorb neutrons. We can supply high purity virgin polyethylene for this application in a variety of shapes and sizes.
JCPEP can be readily machined into complex shapes for applications involving neutron instrumentation, reactor physics, activation analysis or isotopic neutron sources. John Caunt Scientific can not only provide custom machining but can also pour JCPEP into custom-made moulds to provide application-specific shielding form.
5% Borated Polyethylene

5% Borated Polyethylene

JCPE5 is a 5% boron loaded polyethylene neutron shield − HMW grade. Specifically developed for neutron shielding purposes in nuclear installations; its optimal boron content of 5% provides excellent attenuation of thermal neutrons, thus reducing the levels of capture-gamma radiation.
JCPE5 has a high hydrogen content, making it an effective fast neutron shield, slowing down fast neutrons to low energy thermal (slow) neutrons, which are then absorbed by the added boron compound.
JCPE5 5% Borated Polyethylene is typically used in neutron shielding applications where low and intermediate-levels of neutron flux are expected, but elevated temperatures are not. JCPE5 is available in a wide range of form factors including slabs, bricks, cylinders, pellets, and other custom shapes.
Self-Extinguishing Borated Polyethylene

Self-Extinguishing Borated Polyethylene

Self-Extinguishing Borated Polyethylene is used for neutron shielding applications where flame resistance is necessary or desired for the installation.
Self-extinguishing materials are desirable for use in any location requiring neutron shielding where there is an issue with fire loading and a need to reduce the amount of material contributing to the overall amount of combustible materials. ASTM test D-635 (Flammability of Self-Supporting Plastics) shows JC207HD to be self-extinguishing. ASTM Test D-2863 gives a Limiting Oxygen Index of 30.2. In addition to the fire resistance, JC207HD produces negligible smoke when exposed to flame.
Lithium Polyethylene

Lithium Polyethylene

Gamma-sensitive radiation detectors used in the vicinity of reactors or other neutron sources must be shielded from capture-gamma rays. These gammas arise from capture of thermal neutrons by surrounding materials or by the detecting crystal itself. Use of borated polyethylene as a shield can attenuate the neutron flux, but the neutrons captured by the boron will result in a 0.42 MeV gamma ray and will therefore not completely eliminate the gamma background.
7.5% Lithium-Polyethylene is very effective in reducing gammas because it produces no capture gammas. Thus, when used to shield a gamma detector from neutrons, it eliminates the usual capture-gamma background. It should be noted that due to its lower capture cross-section, lithium is less effective than boron for capturing thermal neutrons and therefore requires a greater thickness than borated polyethylene.
Borated Flex-Panel

Borated Flex-Panel

JC227ATH Borated Flexi-Panel is an improved version of the discontinued JC227A.
The standard thickness has been increased to 5/16” (0.31”), which provides the same amount of hydrogen, but improved thermal neutron attenuation and gamma attenuation over the standard thickness JC227A. It has more than twice the thermal neutron stopping power as that typical of 5% borated poly and is used in a wide range of mixed energy neutron shields.
It is effective in a variety of neutron shielding applications including high-energy accelerators (physics research) and neutron test facilities.
Flex-Boron Sheet

Flex-Boron Sheet

JC238 Flex-Boron is a flexible neutron shielding material useful for shielding irregular shapes as well as for being adhered to large straight or curved vertical surfaces. It can be cut to size with a utility knife and bent in a radius as small as 6.4mm (¼”). It can also be custom molded to virtually any configuration; a common application being cylinders with lids for shielding detectors.
JC238 Flexi-Boron has a high boron concentration that provides a thermal neutron attenuation factor greater than X250 for the standard 1/8” (3.2 mm) thickness. It will withstand temperatures of up to 205°C (400°F) without loss of physical or nuclear properties and is self-extinguishing when exposed to flame.
Boron-Silicone

Boron-Silicone

JC237 Boron-Silicone is a fire & heat-resistant, field-castable neutron shielding material.
It is silicone elastomer based and has a high hydrogen content. At temperatures up to 204.4°C (400°F), it will retain almost 90% of it hydrogen for extended periods. The hydrogen content of JC237 is 67% of that found in water and contains 1% boron for thermal neutron capture.
JC237 is available in a variety of shapes and sizes and while it is a solid material, it has a hard rubber-like characteristic that will minimize any impact due to secondary missile formation. It has a density of 1.59 g/cm³ (99 lbs/ft³) and is self-extinguishing. Our JC237 Boron-Silicone can be provided as a multi-part kit that is castable in the field and as pre-cast solid pieces made to your specifications.

About us

John Caunt Scientific Ltd are a Manchester-based distributor of bespoke radiation detection equipment and health physics instrumentation, with over 40 years’ experience in the nuclear shielding industry.

Over the years, our company has gained an outstanding reputation for our overall knowledge of radiation measurement and our ability to design innovative products that are highly recommended by our clients across the country.

Here at John Caunt, we believe that they key to success within this particular industry is to strive for quality, reliability and innovation. We have a team of dedicated specialists who work closely with customers to ensure their radiation detection requirements are fulfilled as efficiently as possible. We as a company take pride in our ability to combine our knowledge and skills with the latest technologies to create new solutions that are proven to achieve excellence. We offer a distinct range of gamma spectrum core loggers, core sample gamma loggers, active extremity dosimeters, nuclear decommissioning equipment and spectrometry products.

John Caunt Scientific has understood the needs of customers for many years, and has evolved existing products as well as new ones to improve the overall detection of radiation, which is absolutely essential in a number of environments. Some of the industries we cater for include Health Physics, Oil & Gas, Defence, Nuclear Power Generation, POCO & Decommissioning and High Energy Physics. Each piece of equipment we design is built to last and will provide consistency wherever possible. Whether our clients are looking for single-channel analysers or multi-channel analysers, we at John Caunt Scientific have the perfect solution for any application.

We at John Caunt have designed multiple solutions over the years that meet the high standards and regulations set out by the industry. Some of these include;
  • Instruments − Gamma Monitors, Counting Equipment, Neutron Monitors.
  • Shielding − Neutron Shielding, Gamma Shielding.
  • Detectors − Scintillation Detectors.


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