[en] After a review of the temporal properties of photomultipliers used in single photoelectron experiments, the main problems encountered in the applications to measurement of the shape of fast light pulses and to the determination of the statistical characteristics of light beams are examined

[en] The characteristics of new prototype high gain photomultipliers having two microchannel plates in cascade for electron multiplication have been investigated. Measurements are given of the gain, dark current, quantum efficiency, anode pulse linearity, electron transit time, single and multiphotoelectron time spreads, and pulse height resolution of LEP PM137 8/II and PM137 7/I photomultipliers. The gain as a function of transverse magnetic field has been measured and is discussed. Emphasis is put on the determination of optimum photomultiplier operating conditions, particularly with respect to their pulse height resolution capability. Photomultiplier characteristics as a function of input pulse repetition frequency have also been investigated and discussed

[en] Characteristics have been measured for the Amperex 56 TVP 42-mm-diameter photomultiplier. Some typical photomultiplier characteristics--such as gain, dark current, transit and rise times--are compared with data provided by the manufacturer. Photomultiplier characteristics generally not available from the manufacturer, such as the single photoelectron time spread, the relative collection efficiency, the relative anode pulse amplitude as a function of the voltage between the photocathode and focusing electrode, and the position of the photocathode sensing area were measured and are discussed for two 56 TVP's. The single photoelectron time spread, the relative collection efficiency, and the transit time difference as a function of the voltage between photocathode and focusing electrode were also measured and are discussed, particularly with respect to the optimization of photomultiplier operating conditions for timing applications

[en] Full text of publication follows: Double Chooz detectors have each 390 inner photomultiplier tubes (PMT) with 10 inch diameter. With Hamamatsu, we have succeeded to produce very low background glass. PMTs were tested in Japan and sent to MPIK (Germany) for new testing, cleaning and assembling the structure. After delivery to Chooz, we installed side and bottom PMTs in far detector. All PMTs will be installed by November. This poster shows the long way of PMTs until detector. (author)

[en] We present recent results on the investigation of the KETEK, ZECOTEK, HAMAMATSU and SENSL SiPM properties after irradiation by the 6–35 MeV neutrons. The typical neutron fluence was about ${10}^{12}\mathrm{n}/{\mathrm{cm}}^2$. The changing of the internal structure of the irradiated SiPMs was studied by the measuring of the C–V and C–f characteristics. We have observed the strong influence of the SiPM manufacturing technology on their radiation hardness. The application of the obtained results to the development of the readout electronics is discussed.

[en] For calibration of the ion multiplier at the PIA instrument a pulsed ion source is needed. This can be done by electric pulse induced desorption (EPID). There ions are emitted from a coated tungsten wire, when a condensor is discharged through the wire within several nanoseconds. First tests have shown similar ion types as known from other methods by fast dissipation of energy in matter. (orig.)

[en] For these measures, the information used is the light polarization plane rotation induced by the magnetic field in a glass probe. This rotation is detected using a polarizer-analyzer couple. The detector is a photomultiplier used with high-current and pulsed light. In a distributed magnet (gap: 6 x 3 x 3 cm) magnetic fields to measure are 300 gauss, lasting 0.1 μs, with rise times ≤ 35 ns, repetition rate: 1/s. An oscilloscope is used to view the magnetic field from the P.M. plate signal. The value of the field is computed from a previous static calibration. Magnetic fields from 50 to 2000 gauss (with the probe now used) can be measured to about 20 gauss ± 5 per cent, with a frequency range of 30 MHz. (author)

No abstract available

No abstract available

[en] A magnetic shielding for the photomultipliers of the Silica Aerogel Detector in the European Hybrid spectrometer is designed. Emphasis is laid on general principles. The effect of flux enhancement, when a group of individual photomultiplier shieldings is aligned along the direction of the magnetic field, is taken into account. The importance of flux measurements in such a design study is stressed. New formulas for the perpendicular and the axial shielding of a number of coaxial cylinders are presented. (orig.)