We present a simple modification for thermoelectrically cooled photomultiplier tube (PMT) assemblies that eliminates the magnetic interference between the peltier element and the PMT. An active compensation is accomplished by forming current loops of the wires of the peltier element and placing them in such a way that they eliminate the interfering magnetic field. It is demonstrated that the im...

The Silicon Photomultiplier (SPM) addresses the challenge of detecting, timing and quantifying low-light signals down to the single-photon level. Traditionally the province of the Photomultiplier Tube (PMT), Avalanche Photodiode (APD), or PIN photodiode with high-gain amplifier, the Silicon Photomultiplier now offers a highly attractive alternative that closely mimics the low light detection ca...

Abbreviations: BSA: Bovine Serum Albumin; HABA: 4’-Hydroxyazo-Benzene-2-Carboxylic Acid; IQ: Installation Qualification; LIMS: Laboratory Information Management System; MRD: Minimum Required Dilution; OQ: Operational Qualification; PBS: Phosphate-Buffered Saline; PBST: Phosphate-Buffered Saline With 0.01% Tween-20; PEG: Polyethylene Glycol; PK: Pharmacokinetics; PMT: Photomultiplier-Tube; PQ: P...

The Rockefeller University Press $30.00 J. Cell Biol. www.jcb.org/cgi/doi/10.1083/jcb.201205114 Cite by DOI: 10.1083/jcb.201205114 JCB 1 of 15 Correspondence to Katherine W. Osteryoung: [email protected] Abbreviations used in this paper: eCFP, enhanced CFP; eYFP, enhanced YFP; PCC, Pearson’s correlation coefficient; PMT, photomultiplier tube; t1/2, half-time of fluorescence recovery; WT, wild ty...

element detector module and still yield a practical design. In this paper we report results of measurements made on a 64 element detector module made with LSO scintillator crystal. We present performance results for a prototype PET detector module consisting of 64 LSO scintillator crystals (3x3x20 mm) coupled on one end to a single photomultiplier tube and on the opposite end to a 64 pixel arra...

Micro-channel plate photomultiplier tube (MCP-PMT) is a kind of photosensitive device with single photon detection capability and great time resolution, which also called Fast-PMT (FPMT). The characteristic MCP makes the MCP-PMT capable reaching spatial resolution multi-anodes. With experience successfully R&D 20-inch MCP-PMT, researchers in IHEP are now developing multi-anodes FPMT resolut...

When an intense sub-nanosecond positron pulse impinges upon a target, a pulse of g-rays is created which can yield information concerning electron–positron pairs just prior to annihilation. Many conventional g-ray detectors are unable to exploit the timing information contained within such pulses, and we describe here the development of a fast detector that is able to do so. Using a singlecryst...

We have developed a new photomultiplier tube (PMT) with high sensitivity for a wavelength-shifter fiber readout of plastic scintillators. Improvements of the photoelectron yield were made on a 2-in. PMT (Hamamatsu R329) by adopting (1) a prism-shaped photocathode, (2) an extended-green photocathode material, and (3) an optical mirror surface of the electrodes. As a result, the number of photoel...

The sensitivity of a possible future 1 Megaton water Cherenkov detector for proton decay searches was studied. For p e π0 decay mode, the detection efficiency and the number of atmospheric neutrino backgrounds were estimated by using a detailed Monte Carlo simulation program. Moreover, their dependence on the number density of the photomultiplier tube (PMT) was investigated. With the PMT densit...

The model R5912-20MOD photomultiplier tube(PMT) is made for cryogenic application by Hamamatsu. In this paper, we report on the measurement of relative quantum efficiency (QE) PMT at liquid argon(LAr) temperature. Furthermore, a specially designed setup and relevant test method are introduced. QE measured in visible wavelengths with emerged high purity nitrogen atmosphere. results show that cha...