INVESTIGATION OF THE EXTENDED RANGE REM-COUNTER SMARTREM-LINUS IN REFERENCE AND WORKPLACE FIELDS EXPECTED AROUND HIGH-ENERGY ACCELERATORS.
Radiation survey instrumentation is adequate for the use around high-energy accelerators if capable to measure the dose arising from neutrons with energies ranging from thermal up to a few gigaelectronvolts. The SmartREM-LINUS is a commercial extended range rem-counter, consisting of a central (3)He-proportional counter surrounded by a spherical moderator made of borated polyethylene with an internal shield made of lead. The dose rate indicated by the SmartREM-LINUS was investigated for two different irradiation conditions. The linearity and the angular dependence of the indicated dose rate were investigated using reference neutron fields produced by (241)AmBe and (252)Cf. Additional measurements were performed in two different workplace fields with a component of neutrons with energies >20 MeV, namely the CERN-EU high-energy reference field and near the beam dump of the SwissFEL injector test facility. The measured dose rates were compared to a commercial rem-counter (WENDI2) and the results of Monte Carlo simulations.
Division for Radiation Safety and Security, Paul Scherrer Institute, 5232 Villigen, PSI, Switzerland Eike.Hohmann@psi.ch.
Eike
E
Hohmann
Division for Radiation Safety and Security, Paul Scherrer Institute, 5232 Villigen, PSI, Switzerland.
S
S
Trovati
Division for Radiation Safety and Security, Paul Scherrer Institute, 5232 Villigen, PSI, Switzerland.
U
U
Strauch
Division for Radiation Safety and Security, Paul Scherrer Institute, 5232 Villigen, PSI, Switzerland.
S
S
Mayer
D000576:Americium / Q000032:analysis; D001608:Beryllium / Q000032:analysis; D002138:Calibration; D002142:Californium / Q000032:analysis; D006801:Humans; D007854:Lead / Q000737:chemistry; D016014:Linear Models; D009010:Monte Carlo Method; D009502:Neutrons; D016273:Occupational Exposure / Q000032:analysis; D010315:Particle Accelerators / Q000295:instrumentation*; D020959:Polyethylene / Q000737:chemistry; D011829:Radiation Dosage; D000072232:Radiation Dosimeters; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods*; D013557:Switzerland; D017132:Workplace
D007854:Lead; D020959:Polyethylene; D002142:Californium; D001608:Beryllium; D000576:Americium