The performance of a multianode photomultiplier tube (MAPMT) with 64 anodes coupled to scintillating fibers has been examined. Such a detector system can be used in a pairproduction gamma-ray telescope as well as in other applications. The characteristics of these tubes (Hamamatsu R5900-00-M64) are presented including single photoelectron sensitivity, electrical and optical cross-talk, and dark...

Data from photomultiplier tubes are typically analyzed using either counting or averaging techniques, which are most accurate in the dim and bright signal limits, respectively. A statistical means of adjoining these two techniques is presented by recovering the Poisson parameter from averaged data and relating it to the statistics of binomial counting from Kissick et al. [Anal. Chem. 82, 10129 ...

APPARATUS: Continuum Minilite 10 Hz pulsed YAG laser (355 nm), YAG laser goggles, quartz sample tubes, phototransistor trigger, Instruments SA H20 Monochrometer, Rutgers P1100 Monochrometer Driver (scanning motor and control box), Hamamatsu R928 photomultiplier, high voltage power supply, Stanford Research Systems (SRS) Fast Preamplifier model SR240, SRS Gated Integrator and Boxcar Averager mod...

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...

38 LLE Review, Volume 93 Introduction Single-photon detectors (SPD’s) represent the ultimate sensitivity limit for any quantum radiation detectors. In the visible light range, the best known and most widely used are Si avalanche photodiodes (APD’s)1 and photomultiplier tubes (PMT’s).2 The operation of photomultiplier/avalanche devices is based on the electron cascade and multiplication effect, ...

We have studied the feasibility of a silicon photomultiplier (SiPM) to detect liquid xenon (LXe) scintillation light. The SiPM was operated inside a small volume of pure LXe, at -95C, irradiated with an internal Am α source. The gain of the SiPM at this temperature was estimated to be 1.8 × 10 with bias voltage at 52 V. Based on the geometry of the setup, the quantum efficiency of the SiPM was ...

Photomultiplier tubes (PMTs) are often used in low-background particle physics experiments, which rely on an excellent response to single-photon signals and stable long-term operation. In particular, the Hamamatsu R11410 model is light sensor of choice for liquid xenon dark matter including XENONnT. The same PMT was also predecessor, XENON1T, where issues affecting its operation were observed. ...

New developments in detection technologies are providing a variety of biomolecular screening strategies from which to choose. Consequently, we performed a detailed analysis of both separation-based and non-separation-based formats for screening nuclear receptor ligands. In this study, time-resolved fluorescence resonance energy transfer (TR-FRET), ALPHAScreen, and time-resolved fluorescence (TR...