IEC 60412-2014 pdf – Nuclear instrumentation – Nomenclature (identification) of scintillators and scintillation detectors and standard dimensions of scintillators.
1 Scope This International Standard gives guidelines for scintillation detectors and scintillators nomenclature (identification) and standard dimensions of scintillators. This International Standard is applicable to all types of solid organic and inorganic scintillators used in detectors for scintillation counting and spectrometry. The object of this standard is to define a standardized nomenclature for scintillation detectors in which most of the properties can be found. The object of this standard is to standardize the dimensions of bare scintillators in order to facilitate interchangeability of non-encapsulated scintillators and to facilitate intercomparisons of measurements with encapsulated scintillators. Liquid scintillators are not addressed by this standard. NOTE The identification labels laid down in Clause 2 of the present standard include certain dimensions which may be expressed in millimetres or inches. The SI system recommends the use of millimetres rather than inches. 2 Nomenclature of scintillation detectors and scintillators 2.1 General The identification of a scintillation detector is specified by a predefined sequence of specification items described below. Each specification item refers to a specific property of the detector material and/or construction. The general structure of an identification label includes symbols, described in 2.2 to 2.1 3, and given in the same order in which these subclauses are provided. 2.2 Configuration This definition is producer-specific, for example: C – crystal without photomultiplier (see example 1 at the end of this clause); HC – housed crystal (see example 2); HCW – housed crystal with a well; HCH – housed crystal with a hole; IMP – housed crystal with integrally mounted photomultiplier (see examples 3 to 5); PhX – phoswich, where X is the number of scintillators (see example 6); X CH Y – single-line X-channels detector (see example 7), where X is the number of channels in line; Y is pitch.
2.4 Dimensions of the scintillator cross-section in mm Specification in inches shall be marked as such, e.g. 2’’. In the case of rectangular scintillator dimensions, the two measures are separated by the letter “x” (see example 2 below). The most frequently found (standard) dimensions of scintillator diameters are listed in Table A.1 . 2.5 Height of the scintillator in mm Specification in inches shall be marked as such, e.g. 4″. The most frequently found (standard) dimensions of scintillator heights are listed in Table A.2. 2.6 Scintillator material Doping elements are written in parentheses. N – NaI(TI); CT – CsI(TI); CN – CsI(Na); LiI – LiI(Eu); CaF – CaF 2 (Eu); BGO – Bi 4 Ge 3 O 1 2 ; CWO – CdWO 4 ; PWO – PbWO 4 ; LC – LaCl 3 (Ce); LB – LaBr 3 (Ce); P – Plastic; LSO – Lu 2 SiO 5 ; LYSO – Lu 1 ,8 Y 0,8 SiO 5 ; GSO – Gd 2 SiO 5 ; ZS – ZnSe; ZST – ZnSe(Te); ZWO – ZnWO 4 ; YC – YAG(Ce); BF – BaF 2 ; CI – CsI; CaWO – CaWO 4 ; CLYC – Cs 2 LiYCl 6 (Ce); SI – SrI 2 (Eu); PMMA – polymethylmetacrylate; PS – polystyrene; PVT – polyvinyltoluene.
For phoswich detectors all materials are separated by a slash (/). For each type of scintillator material, geometry, diameter and height of scintillator should be given according to 2.3 to 2.6. 2.7 Type of entrance window A – aluminium window; B – beryllium window; K – carbon epoxy window; M – polyethyleneterphthalate window; S – steel window; SS – stainless steel window. 2.8 Type of output window SL – silica glass; O – optical glass; B – borosilicate glass; Pl – plastic; W – without window. 2.9 Type of housing S – steel housing (chrome plated); C – copper housing; St – standard aluminium housing; SS – stainless steel housing. 2.1 0 Diameter of the photomultiplier tube (PMT) in mm Specification in inches shall be marked as such, e.g. 7″. In the case when a detector has several PMTs, the diameters are separated by a slash (/). 2.1 1 Extra features of PMT or type of photodiode M – external solid µ-metal shield; E1 – built-in Voltage Divider (VD); E2 – built-in voltage divider and preamplifier; HV – built-in high voltage generator; P – pure NaI used as light-guide; Q – quartz glass used as light-guide; PS – position sensitive anode; PIN – type of photodiode – p-in; PN – type of photodiode – p-n; SPM – silicon photomultiplier; APD – avalanche photodiode; SDD – silicon drift diode; MCP – micro-channel plate. In the case when PMT has several extra features they are separated by commas.