Journal Article•
A modular NaI(Tl) detector for 20-1000 MeV photons
TL;DR: In this paper, a detector consisting of 54 NaI (Tl) modules was proposed for the detection of 20-1000 MeV photons, achieving an energy resolution of 5.5% at 130 MeV.
About: This article is published in Nuclear Instruments and Methods.The article was published on 1983-01-01 and is currently open access. It has received 8 citations till now. The article focuses on the topics: Detector.
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TL;DR: In this article, the high-energy part of the spectrum was used to deduce branching ratios for the so far unobserved annihilation channels: R(p p →π 0 ω) = (2.38 ± 0.65)%, R( p p → π 0 η ) = (0.82 ± 0.04)% and an upper limit for the π0η′ channel was deduced.
48 citations
01 Apr 1985-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: The situation of electromagnetic and hadronic calorimeters is reviewed in this paper, where important features of future calorometers are discussed as well as an outlook important features for future Calorimeters are discussed.
Abstract: After a short introduction the situation of electromagnetic and hadronic calorimeters is reviewed. As an outlook important features of future calorimeters are discussed.
14 citations
15 Feb 1988-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: An array of 49 NaI(Tl) modules each 20 inch in depth and 2.5 inch in cross section has been constructed and its properties, especially energy resolution, explored for positrons in the range 20 MeV − 18 GeV as mentioned in this paper.
Abstract: An array of 49 NaI(Tl) modules each 20 inch in depth and 2.5 inch × 2.5 inch in cross section has been constructed and its properties, especially energy resolution, explored for positrons in the range 20 MeV – 18 GeV. A subsequent much larger detector, the Crystal Box, has also been constructed from 396 modules of the same cross section, but mostly 12 inch in depth, and operated as a γ-ray and positron detector in a search for rare muon decays. The calibration procedure used for the Crystal Box and its characteristic resolutions in energy, impact point and time are described.
11 citations
15 Apr 1986-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this paper, a modularized array of NaI(Tl) detectors in a half barrel configuration is presented, where 96 NaI modules are surrounded by a layer of 48 modules of scintillating glass.
Abstract: We have constructed a modularized array of NaI(Tl) detectors in a half barrel configuration that is about 75 cm long with an inner radius of 25 cm. 96 NaI modules are surrounded by a layer of 48 modules of scintillating glass which have similar dimensions to the NaI modules. Each NaI crystal was shaped as a trapezoidal pyramid and encapsulated in a 1 mm thick aluminium container with dimensions of (43 × 94) × (110 × 94) × 377 mm3. The construction and performance are described along with the gain calibration and monitoring, the beam position sensitivity, the scattering between modules, etc. The fwhm energy resolution of a 5 × 5 array of NaI modules varied from 6.5% for incident electrons at 100 MeV to 3.6% at 1000 MeV
8 citations
TL;DR: In this paper, the γ spectrum associated with p p annihilation on 4He at rest was measured, showing two peaks, at energies of 161.9 and 203.0 MeV, corresponding to intermediate narrow states of masses which seem to be related to states found in p p annihilations.
6 citations
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TL;DR: The Cluster of 54 detector as mentioned in this paper is the predecessor of the Crystal Ball detector, which is designed for the study of electron-positron collisions at colliding beam facilities, and it has been successfully tested.
Abstract: A prototye NaI(Tl) detector (the Cluster of 54) of spherical geometry subtending a solid angle of 7.5% of 4? at its center, has recently been assembled and tested. This detector consisted of 54 close-packed but optically isolated NaI(Tl) modules and the associated electronic circuitry. The Cluster of 54 is the predecessor of an almost complete spherical detector, the Crystal Ball, which will cover 94% of 4?. The latter detector is now under construction and is especially designed for the study of ?-rays produced in electron-positron collisions at colliding beam facilities. This article will outline the mechanical, optical, and electronic assembly of the prototype system. Cluster of 54 test data will be presented.
21 citations