The LB 6419 neutron and gamma detector is designed to derive dose and dose rates at particle accelerators. In this environment, very specific conditions for dose monitoring prevail like pulsed radiation or high beam energies. Many conventional measuring devices for ionized radiation suffer greatly from dead-time effects and are therefore only limited suitable for the measurement of pulsed radiation fields. In addition, many types of detectors do not have the necessary sensitivity at high energies or high dose rates and tend to underestimate the radiation field intensities significantly.

The design of the dose rate monitor LB 6419 is unique in many respects:

• Dual Detector Design with 3He and scintillation detector
• Measurement of neutron and gamma dose (rate)
• Measurement of prompt and delayed neutrons
• Measurement of low and high energy neutrons
• Unsurpassed level of measurement and data security through dual detection design and data storage

The Dual Detector Design is patented and provides outstanding features. Whereas prompt neutrons can be detected in the 3He tube, those from pulsed sources produce short-lived reaction residuals in the plastic scintillator or the surrounding which are observed with very high efficiency. The dose is derived from the intensity of those residuals between the pulses. Under typical pulsed beam conditions, the probe does not suffer from saturation effects up to neutron dose rates of approx. 1 Sv/h in the burst. Furthermore, the gamma dose rate in the pulse can be detected with the plastic scintillator as well.

Additionally, the Dual Detector Design provides security far better than any other REM counter. Both detectors are applied independently and are able to control themselves mutually. Two independent interlock signals round out the security concept.

For more details, please refer to datasheet.

Features:

• Arrangement of a dual detector with 3He and scintillation detector
  

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• Measurement of unpulsed and pulsed radiation
  

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• Neutron and gamma measurement simultaneously and separate