LB 6419

Berthold
LB 6419

Continuous and Pulsed Dose Rates

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The LB 6419 is a neutron and gamma dose rate monitor for continuous and pulsed radiation. It has the necessary sensitivity at high energies and dose rates, as well as is able to perform measurements of low-energy neutrons.

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Description

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
  • Measurement of unpulsed and pulsed radiation
  • Neutron and gamma measurement simultaneously and separate

Specifications

Dose Rate Detectors
Radiation detectorOrganic scintillator 3He tube
Measurement modesNeutron- and γ measurement simultaneously and separate, prompt and delayed neutron
Ambient Conditions
Temperature range0 °C to + 40 °C (operation)
Rel. humidity≤ 80 %, non-condensing
Mechanical Data
Dimensions(L x W x H in mm) 300 x 200 x 600
Weightapprox. 11.5 kg
Electronics
Data ProcessingFLASH-ADC board integrated in steel housing
InterfacesRJ 45 Ethernet connector
Mains supply110 V – 230 V
Data analysisRead out through dedicated PRM software Display of Dose from: [High energy Neutrons], [Low energy neutrons] and [Gamma radiation].
AlarmTwo independent interlock outputs
Accessories (optional)
PRM SoftwareSoftware for PC

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