Precision measurement of the neutron magnetic form factor

A review of properties of wide gap semiconductor materials such as diamond, diamond-like carbon films, SiC, GaP, GaN and AlGaN/GaN that are relevant to electronic, optoelectronic and microwave applications is presented.We discuss the latest situation and perspectives based on experimental and theoretical results obtained for wide gap semiconductor devices. Parameters are taken from the literature and from some of our theoretical works. The correspondence between theoretical results and parameters of devices is critically analysed.

https://iopscience.iop.org/article/10.1088/0022-3727/40/20/S18/pdf

Wide gap semiconductor microwave devices

We report on the development of a compact, inexpensive and fast light pulser system designed to set up the timing of scintillators in a medium energy physics spectrometer.

A fast timing light pulser for scintillation detectors

Fast-timing-light pulser for scintillation detectors (A)

Shashlyk electromagnetic calorimeter modules with an energy resolution of about 3 % / E ( GeV ) for 50 – 1000 MeV photons have been developed, and a prototype tested. Details of these improved modules, including mechanical construction, selection of wave shifting fibers and photo-detectors, and development of a new scintillator with improved optical and mechanical properties are described. How the modules will perform in a large calorimeter was determined from prototype measurements. The experimentally determined characteristics of the calorimeter prototype show energy resolution of σ E / E = ( 1.96 ± 0.1 ) % ⊕ ( 2.74 ± 0.05 ) % / E , time resolution of σ T = ( 72 ± 4 ) / E ⊕ ( 14 ± 2 ) / E ( ps ) , where photon energy E is given in GeV units and ⊕ means a quadratic summation. A punch-through inefficiency of photon detection was measured to be e ≈ 5 × 10 - 5 ( Θ beam > 5 mrad ) .

G. Stengl

Papers

A long term stable reference light source using LEDs for stabilization of scintillation spectrometers