Abstract-This paper presents a comparative study of optical and scintillation properties for various inorganic crystal scintillators, which are used, or actively pursued, by the high energy physics community for experiments. Transmittance, excitation and photo-luminescence spectra were measured for samples with a dimension of 1.5 radiation length. The transmittance data are compared to the theoretical limit calculated by using refractive index, assuming no internal absorption. Refractive index of lutetium oxyorthosilicate and lutetium-yttrium oxyorthosilicate was measured by using a V-prism. Light output was measured for these samples with Tyvek paper wrapping, and the result is presented with the quantum efficiency of the readout devices taken out. Temperature coefficient of the light output was also measured. The result of these measurements will be used in the summary table of the inorganic scintillator section for the 2008 edition of the particle data book.

InSe (bandgap of ~1.20 to 1.80 eV depended on thickness reduction from bulk to monolayer). Specifically, the uncooled SWIR detectivity is up to ~10 14 Jones at 1064 nm and ~10 12 Jones at 1550 nm, respectively. This result indicates that the 2DLMs vdW heterostructures with type-II band alignment produce an interlayer exciton transition, and this adventage can offer a viable strategy for devising high-performance optoelectronics in SWIR or even longer wavelengths beyond the individual limitations of the bandgaps and heteroepitaxy of the constituent atomic layers.

is a bright (200 times of PWO), fast (40 ns) and radiation hard crystal scintillator. The light output loss of 20 to 28 cm long crystals is at a level of 10% after 1 Mrad -ray irradiations, much better than all other crystal scintillators.  The material is widely used in the medical industry. Existing mass production capability would help in crystal cost control.  LSO/LYSO crystals are chosen by the Mu2e and SuperB experiments to construct electromagnetic calorimeters with total absorption nature. They are also proposed as the active material for sampling calorimeter options for the CMS forward calorimeter upgrade.

Abstract-Light monitoring will play a crucial role in maintaining energy resolution for the CMS lead tungstate crystal calorimeter at LHC. In the last several years, a laser based monitoring light source was designed and constructed at Caltech, and was installed and commissioned at CERN. This paper presents the design of the CMS ECAL monitoring light source and its performance during beam tests. Issues related to the monitoring precision are discussed.

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