In the field of large scale water Cherenkov experiments such as proton decay, the detector is required to have a wide photosensitive area, high gain, low noise, fast timing, and good stability. The 20 inch diameter photomultiplier is developed and ascertained to have good characteristics as the detector component of the proton decay experiment. In this paper, various characteristics of the newl...

XENON Dark Matter Project searches for the dark matter candidate, the Weakly Interacting Massive Particle (WIMPs). All XENON experiments use a time projection chamber (TPC) to detect nuclear recoils resulting from WIMP-nuclei scattering. Photomultiplier tubes (PMTs) read out the signal from the scintillation and ionization of the xenon triggered by the nuclear recoils. This paper details PMT ga...

This paper describes measurements made on Hamamatsu R1408 8-m. photomultiplier tubes in order to parameterise the cesium bialkali photocathode in terms of a complex refractive index fi and a thickness T. The extracted parameters have been used to predict the angular response of the photomultiplier tubes, and this prediction has been experimentally verified. Measurements were taken on a number o...

A plastic scintillator with an injection method has been developed for a gamma radiation detector. The was made from the main matrix of polystyrene (PS) pellets addition primary dopant PTP (para-terphenyl) 1.5% wt and secondary as wavelength shifter (WLS) POPOP (1,4-bis [2- (phenyloxazolyl) )] - benzene) 0.01 0.05% wt. mixture dopants fed to extruder machine obtain scintillating then referred 3...

Photek has been working with AWE to provide photomultiplier (PMT) solutions for fusion diagnostics. By using microchannel plates (MCP) as the gain medium, the time response of the PMTs can be as fast as 100 ps FWHM. We will present data showing developments in the accurate measurement of the true impulse response of the fastest detectors. We will also show improvements in the pulse uniformity a...

We present a fully integrated, ready-for-use quantum random number generator (QRNG) whose stochastic model is based on the randomness of detecting single photons in attenuated light. We show that often annoying deadtime effects associated with photomultiplier tubes (PMT) can be utilized to avoid postprocessing for bias or correlations. The random numbers directly delivered to a PC, generated at...

The humidity role in the partial discharge (PD) inception mechanism is quite challenging, especially when considering environmental temperature. Indeed, there no general rule to explain effect on PD phenomenon. In this paper, activity inter-turn insulation experimentally investigated for different relative (RH) conditions at three ambient temperatures, that is, 30°C, 60°C, and 90°C. Partial vol...

An analytical function is derived that exactly describes the amplification process due to a series of discrete, Poisson-like amplifications like those in a photo multiplier tube (PMT). A numerical recipe is provided that implements this function as a computer program. It is shown how the program can be used as the core-element of a faster, simplified routine to fit PMT spectra with high efficie...

The High-Luminosity phase of LHC, scheduled to begin in late 2027, will deliver up ten times the LHC nominal instantaneous luminosity experiments. To ensure sound performance under higher pile-up and radiation conditions, ATLAS hadronic Tile Calorimeter (TileCal) replace both on- off- detector electronics systems during long shutdown 3 (2025-2027). upgraded front-end system continuously digitiz...

An analog integrated circuit has been designed, in a BiCMOS 0.8 micron technology, for the feasability study of the signal processing of the AMS RICH photomultiplier tubes [1]. This low power, three channel gated integrator includes its own gate generator and no external analog delay is required. It processes PMT pulses over a dynamic range of 100. An external RC network allows it to work with ...