Now showing items 21-30 of 30
Mirrors for an imaging gamma ray telescope
(Elsevier, 1991-12-15)
A method is given for making mirrors suitable for large parabolic light collectors. The present application is for collecting Cherenkov light from air showers.
A large air shower array to search for astrophysical sources emitting [gamma]-rays with energies >=1014 eV
(Elsevier, 1994-07-15)
We describe the technical details and the performance of a large array which detects both the electron and muon components in extensive air showers with energies >= 1014 eV. The array was designed to search for [gamma]-rays ...
A water Cherenkov counter sensitive to nonwaveshifted ultraviolet Cherenkov photons
(Elsevier, 1986-11-15)
We describe a prototype water Cherenkov counter which has been built and tested with relativistic cosmic ray muons. An analysis of the expected photoelectron yield is described. The predicted result of 315 +/- 31 photoelectrons ...
GRACE: a prototype for the Gran Sasso air Cherenkov experiment
(Elsevier, 1992-10-15)
GRACE is a five element array of air Cherenkov light collectors designed to measure the energy of primary cosmic rays and operate on the terrain over the deep underground muon tracking detector, MACRO, at the Gran Sasso ...
An inexpensive circuit for monitoring photomultiplier anode current
(Elsevier, 1992-01-01)
An 8-channel current-to-frequency converter module has been developed for measuring photomultiplier anode currents in the range of 1-100 [mu]A. Although this circuit was designed specifically for monitoring photomultiplier ...
Calibration of Tuffak polycarbonate track detector for identification of relativistic nuclei
(Elsevier, 1984)
We discuss response of Tuffak polycarbonate to relativistic heavy nuclei using two methods, measurement of the minor axis diameter and of the length of the track cone, to determine charge resolution. At Z = 92 (0.95 GeV/u ...
A threshold gas Cerenkov counter for a 200 GeV/c beam
(Elsevier, 1971-07-15)
A test of a prototype gas Cerenkov counter is described. The emphasis was on testing various photomultipliers with extended quantum efficiency in the ultraviolet.
Laboratory angular distributions for the production of charged secondaries in inelastic proton-proton collisions at 102 GeV/c
(Elsevier, 1974-10-11)
Lab angular distributions for the production of charged secondary particles in inelastic proton-proton collisions are presented. Data are separately displayed for protons and for positive and negative mesons (pions and ...
An amplifier-discriminator module for very high energy [gamma]-ray astronomy
(Elsevier, 1990-07-15)
An eight-channel amplifier-discriminator module has been developed for processing fast photomultiplier signals from a ground-based [gamma]-ray imaging telescope. The module provides several outputs for recording pulse ...
Rho-omega interference in pp 4st AT 1.6 - 2.2 GeV/c *
(Elsevier, 1970-12-15)
The [pi]+[pi]- mass spectrum from over 3000 events of the reaction pp-->[pi]+[pi]+[pi]-[pi]- at 1.63-2.20 GeV/c shows evidence for [rho]-[omega] interference. If we allow for [rho]-background interference the evidence is ...