title: Neutron measurements in the stray field produced by 158 GeV c(-1) per nucleon lead ion beams.
abstract: This paper discusses measurements carried out at CERN in the stray radiation field produced by 158 GeV c(-1) per nucleon 208Pb82+ ions. The purpose was to test and intercompare the response of several detectors, mainly neutron measuring devices, and to determine the neutron spectral fluence as well as the microdosimetric (absorbed dose and dose equivalent) distributions in different locations around the shielding. Both active instruments and passive dosimeters were employed, including different types of Andersson-Braun rem counters, a tissue equivalent proportional counter, a set of superheated drop detectors, a Bonner sphere system, and different types of ion chambers. Activation measurements with 12C plastic scintillators and with 32S pellets were also performed to assess the neutron yield of high energy lead ions interacting with a thin gold target. The results are compared with previous measurements and with measurements made during proton runs.
authors.affiliation: Politecnico di Milano, Dipartimento di Ingegneria Nucleare, CESNEF, Milan, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Agosteo
authors.forename: C
authors.initials: C
authors.lastname: Birattari
authors.forename: A
authors.initials: A
authors.lastname: Foglio Para
authors.forename: E
authors.initials: E
authors.lastname: Nava
authors.forename: M
authors.initials: M
authors.lastname: Silari
authors.forename: L
authors.initials: L
authors.lastname: Ulrici
mesh_terms: D004781:Environmental Exposure; D004867:Equipment Design; D007854:Lead; D009502:Neutrons; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods
chemical_list: D007854:Lead