Current and planned ICF implosion experiments require the detailed measurement of physical conditions on the imploded core. Glass and plastic shells filled with D2 open a window into the core by measuring the ratio of the various fusion reactions occurring during the implosion.l The number of each reaction is measured by characterization of the energy spectrum for the penetrating reaction produ...

We examined the ploidy of C. neoformans strains using both laser scanning cytometry and a fluorescence microscope equipped with a photomultiplier. Haploid strains consisted of normal-sized cells with a haploid DNA amount. In the cell population there were also large-sized cells with a diploid DNA amount. These large cells in haploid strains were isolated using a Skerman micromanipulator, cultiv...

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...

We present the waveform digitiser used in the Double Chooz experiment. We describe the hardware and the custom-built firmware specifically developed for the experiment. The performance of the device is tested with regards to digitising low light level signals from photomultiplier tubes and measuring pulse charge. This highlights the role of quantisation effects and leads to some general recomme...

SNO+ is a multi-purpose neutrino detector, which will primarily study neutrinoless double beta decay. Preparations are underway for the first phase of physics data-taking, with a water-filled detector. In terms of hardware, recent electronics repairs are described, as well as the programme which has shown to be ∼90% effective in repairing failed photomultiplier tubes. Testing of Data Quality ha...

Results of studying the instability of the gain of FEU-115M photomultiplier tubes (PMTs) at a varying counting rate corresponding to the range of the anode current of 0.02–120 μA are presented. It is shown that the behavior and value of the gain instability for different samples of this PMT type substantially differs when the counting rate changes. The relative change in the gain of some PMTs r...

Time-resolved measurement of early arriving photons through diffusive media has been shown to effectively reduce the high degree of light scatter in biological tissue. However, the experimentally achievable reduction in photon scatter and the impact of time-gated detection on instrument noise performance is not well understood. We measure time-dependent photon density sensitivity functions (PDS...

We propose to use stopping cosmic-ray muons in the energy calibration of planned and deployed large underwater detectors. The method is based on the proportionality between the incident muon energy and the length of the muon path before it stops. Simultaneous measurements of the muon path and the amplitude of the signal from the photomultiplier tubes allow a relation between the energy deposite...

The P10 scintillator is a component of the Focal Plane Detector being developed at Michigan State University. The scintillator will stop and determine the energy of incoming isotopes. The project focused on testing and calibration of the thick scintillator. Photomultiplier tubes were tested then coupled to the scintillator. The PMTs were then gain matched. Tests were run to determine the positi...

A detector system, called DUVEX, has been developed for the soft-x-ray and extreme ultraviolet domain. It consists in a YAG :Ce scintillator coupled to a photomultiplier module working under vacuum in counting mode. The design and the performances of this detector in terms of yield, absolute efficiency, response and noise are reported. Spectra in the soft x-ray range of different elements (W, A...