Germany BERTHOLD LB123N neutron dosimeter
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Brief description: Connected to the neutron detector LB6411 the LB 123 N becomes a very sensitive neutron dose rate monitor for measuring neutrons in surrounding dose equivalents The LB 123 N has a high response sensitivity of approximately every 3 words allowing a measurement range of NSV/h from 30 to 100 mSv/h This is the first time in commercial neutron monitoring that the energy dependence is adapted to the new conversion factors specified in 60 ICRP
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Detailed introduction
germanyBERTHOLD LB123N Neutron Dosimeter
Product introduction:
l Connect to neutron detectorThe LB6411 LB 123 N becomes a very sensitive neutron dose rate monitor for surrounding dose equivalent measurements of neutrons
l LB 123 N High response sensitivity of approximately 3 words per hour allows NSV/h measurement range from 30 to 100 mSv/h
l For the first time in commercial neutron monitoring, energy dependence adapts to new transitions60 Factors specified by ICRP
l LB 123N neutron dose rate measuring instrument is a high-performance, portable neutron dose rate measuring equipment launched by BERTHOLD company
l The system combines a high-performance, digital measurement host with aBERTHOLD's proprietary peripheral, highly sensitive He3 proportional counter technology neutron detector
l Highly sensitive proportional counter placed in diameterThe center of the 250mm slowing ball and the geometric position of the counting tube are determined based on the calculation results of the Monte Carlo simulation program (MCNP).
l At the same time, the detector also integrates a self-adjusting high-voltage power supply module and a pre-signal amplifier, which makesThe best sensitivity achieved with the LB 123N is about 3 pulse counts per nSv, signal amplifier
l Also providedThe excellent energy response performance of LB 123N is more than 5 times higher than that of traditional proportional counter tube technology, making it very suitable for measurements in very weak neutron radiation fields.
l LB 123N has a compact overall structure and excellent performance, meeting the requirements for use in various extreme environments. It can be used as a portable neutron dose rate meter or a fixed neutron dose monitor.
l Can be widely used in environmental protection, public security, military, customs, health, nuclear industry, nuclear power plants and other systems
Product application:
l nuclear power plant
l Nuclear Industry Research Center
l nuclear medicine
l universities, laboratories
l Environmental Radiation Pollution Survey
l Nuclear safety emergency personnel
l Airport, station, port, customs security inspection
Features:
l neutron dose rate monitorLB123 N approximately 3 counts per NSV, with very high sensitivity
l Can be used as a portable instrument or as a fixed monitor
l Fluence's reaction has been measured with monoenergetic neutron beams at the Federal Institute for Physics and Technology in Braunschweig, Germany.
l Calibration of neutron surrounding dose equivalentsH*（10）
l The thermal energy detected by neutrons is20 MeV
l energy dependence±30% at 50 KeV and 10 MeV
l High sensitivity, therefore low weak neutron field measurement time
l Peripheral and highly sensitive product technologyHe3 proportional counter tube technology neutron detector has excellent sensitivity and energy responsiveness
l Product wide detection range:thermal energies (thermal neutrons 0 ~ 20 MeV
l Product energy dependence:±30% between 50 keV ~ 10 MeV
l The product has a compact overall structure and excellent performance. It can be used as a portable neutron dose rate meter or a fixed neutron dose monitor.
Technical parameters:
Measurement object: | neutron |
Measurement specifications: | ICRP Publication No. 60 recommends the use of a new neutron dose radiation unit: Sv/h |
Detector: | TechnicalHe3 proportional counter tube, Ø 40 mm x 100 mm, stainless steel thin wall (1mm) |
Working voltage: | 2700 V |
Measuring range: | 30 nSv/h to 100 mSv/h |
Neutron energy response range: | Thermal (thermal neutron) ~ 20 MeV, thermal neutron detection efficiency is about 90% |
Scale source: | Cf-252 naked neutron source |
Flux response: | 1.09 cm² |
surrounding dose equivalentH*(10) response: | everyμSv 2.83 pulse counts or 0.79cps per μSv |
Factory scale factor: | 1.27 µSv/h per cps |
Background: | < 0.02 cps |
Energy dependence: | ±30% between 0 keV ~ 10 MeV |
Gamma ray sensitivity: | < 40 µSv/h in 10 mSv/h, Cs-137 gamma-field |
Working temperature: | -10° C ~ +50° C |
Moderating ball specifications: | Ø 250 mm，9.2kg |
Moderating ball material: | Low-pressure polyethylene with 2% carbon additive, density 0.95 g/cm3 |
Host specifications: | |
Display: | High-contrast, backlit LCD display,32×84 pixels |
Specifications: | 145x170x45mm(HxLxW) |
Weight: | 0.8kg (excluding battery) |
Power supply: | 3xIEC LR14 batteries or 1.2V/4.5Ah NiMH batteries |
Working hours: | > 150 hours (LR14 battery) |
Working environment: | -15 °C ~+50 °C, 30% ~75%RH (non-condensing) |
Protection level: | IP65 |
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