MEASALL Neutron Sensor Option KC7601.31
Original price was: $599.00.$399.00Current price is: $399.00.
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For KC761A/B/C
10×10×3mm 6Li scintillator + SiPM
15mm HDPE Built-in Moderator
Neutron identification algorithm
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1 Year Warranty 7 days Refund
KC7601.31 Neutron Sensor Module
Overview
The KC7601.31 is an optional neutron sensor designed exclusively for the KC761A/B/C models. This 6Li sensor is primarily optimized for low-energy neutron detection but is also responsive to medium and high-energy neutrons. When integrated with the KC761 series, it enables neutron flux density measurements in a wide range of environments. Given the specialized nature of neutron detection, a thorough understanding of the sensor’s specifications and performance characteristics is recommended prior to use.
Field of Application
The KC7601.31 is only compatible with KC761A/B/C models and is not supported by KC761 (base version). Typical applications include:
- Neutron Field Detection: Identification of neutron radiation fields and assessment of relative neutron flux.
- Scientific Research: Suitable for detecting neutron production and leakage in experimental settings.
- Radiation Source Identification: Ideal for locating neutron sources during laboratory or field investigations.
- Security and Personal Protection: Enhances detection capabilities for neutron radiation in sensitive environments.
- Hobbyist and Educational Use: Allows scientific enthusiasts to explore neutron detection safely and effectively.
Note: Due to the complexity of neutron dosimetry, dose rate measurements are provided for reference purposes only.
Technical Specifications
Parameter | Details |
---|---|
Sensitive Cross-sectional Area | 1 cm² (100 mm²) |
Built-in Moderator | 15 mm HDPE (High-Density Polyethylene) |
Theoretical Detection Efficiency | (With built-in moderator, no external moderator) |
Thermal Neutrons | >90% |
1 eV | ~90% |
10 eV | ~80% |
100 eV | ~60% |
1 keV | ~50% |
10 keV | ~30% |
100 keV | ~20% |
1 MeV or higher | <10% |
- Dose Rate Measurement Accuracy: Calculated based on theoretical models; includes a zero error of approximately 0.1 μSv/h due to advanced screening algorithms.
- Enhanced Sensitivity with External Moderator: When paired with a 5 cm thick HDPE moderator and exposed to an AmBe neutron source, the expected uncertainty for measurements above 2.5 μSv/h is estimated at ±20%.
- Gamma (γ) Screening Capability: For γ-rays between 1.3 and 1.9 MeV, the neutron-to-gamma count ratio is better than 10:1; for other energies, it is better than 1000:1.(Within the non-overloaded range of the gamma sensor)
Illustration: Typical Neutron Response Spectrum
The KC761x series includes standard CsI sensor, enabling advanced γ-ray suppression by subtracting the γ-response near 1.6 MeV from the neutron sensor’s data. For optimal accuracy, users are advised to avoid proximity to strong γ-sources such as 60Co, 40K, 232Th.
Usage Notes
- Directional Sensitivity:
- The neutron sensor features a directional design, installed in right slot of KC761x. Its 6Li scintillator is optimized for neutron capture when perpendicular to the incident neutron beam. Proper alignment is crucial for precise readings.
- Neutron Background Radiation:
- At sea level, neutron background typically ranges from 0.003 to 0.011 μSv/h. On land, slightly elevated levels may occur due to natural nuclides. These are generally below the instrument’s zero-error margin, making absolute background radiation measurements impractical.
- At high altitudes, cosmic ray-induced neutron flux increases significantly, averaging around 2.5 μSv/h at 10 km altitude. Variations from 1 to 8 μSv/h are common in mid-latitudes.
- Measurement Stabilization:
- A smoothing algorithm is employed, requiring 1 to 10 minutes to stabilize for reliable readings. Weaker neutron fluxes demand longer stabilization periods. Examples include:
- 0.5 μSv/h: ~10 minutes
- 2.5 μSv/h: ~3 minutes
- For background radiation, counts may take several minutes to stabilize. For low neutron flux (<1 CPM), it is advised to monitor cumulative doses for at least 1 hour to ensure accuracy.
- A smoothing algorithm is employed, requiring 1 to 10 minutes to stabilize for reliable readings. Weaker neutron fluxes demand longer stabilization periods. Examples include:
Pro Tip: Ensure proper alignment and minimal movement during measurement for optimal data accuracy.
Installation Guide for the Neutron Sensor on KC761/A/B/C:https://deepace.net/installation-guide-for-the-neutron-sensor-on-kc761-a-b-c/
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