7 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Groom, D.E."  
Results: 1 - 7
open access

A measurement of E/. pi. for a fast lead liquid argon calorimeter

Description: The NA34 (HELIOS) calorimeter has measured e/{pi} {congruent} 1.1 in a uranium/liquid argon calorimeter with a shaping time of 135 nsec. Lead may be a viable alternative, but e/{pi} must first be measured at fast shaping times in lead. We re preparing to measure e/{pi} at momenta ranging from 0.5 to 20 GeV/c and with shaping times of 50, 100 and 150 nsec.
Date: January 1, 1990
Creator: Makowiecki, D.; Gordon, H. A.; Ma, H.; Murtagh, M.; Radeka, V.; Rahm, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Incident energy dependence of hadronic activity

Description: Two features of high-energy hadronic cascades have been long known to shielding specialists: (a) in a high-energy hadronic cascade in a given material (incident E [approx equal] 10 GeV), the relative abundance and spectrum of each hadronic species responsible for most of the energy deposition is independent of the energy or species of the incident hadron, and (b) because [pi][sup 0] production bleeds off more and more energy into the electromagnetic sector as the energy of the incident hadron i… more
Date: January 1, 1993
Creator: Gabriel, T.A. (Oak Ridge National Lab., TN (United States)); Groom, D.E. (Lawrence Berkeley Lab., CA (United States)); Job, P.K. (Argonne National Lab., IL (United States)); Mokhov, N.V. (Institute of High Energy Physics, Serpukov (Russian Federation) Superconducting Super Collider Lab., Dallas, TX (United States)) & Stevenson, G.R. (European Organization for Nuclear Research, Geneva (Switzerland)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A measurement of E/{pi} for a fast lead liquid argon calorimeter

Description: The NA34 (HELIOS) calorimeter has measured e/{pi} {congruent} 1.1 in a uranium/liquid argon calorimeter with a shaping time of 135 nsec. Lead may be a viable alternative, but e/{pi} must first be measured at fast shaping times in lead. We re preparing to measure e/{pi} at momenta ranging from 0.5 to 20 GeV/c and with shaping times of 50, 100 and 150 nsec.
Date: December 31, 1990
Creator: Makowiecki, D.; Gordon, H. A.; Ma, H.; Murtagh, M.; Radeka, V.; Rahm, D. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Incident Energy Dependence of Hadronic Activity

Description: Two features of high-energy hadronic cascades have been long known to shielding specialists: (a) in a high-energy hadronic cascade in a given material (incident E {approx_equal} 10 GeV), the relative abundance and spectrum of each hadronic species responsible for most of the energy deposition is independent of the energy or species of the incident hadron, and (b) because {pi}{sup 0} production bleeds off more and more energy into the electromagnetic sector as the energy of the incident hadron i… more
Date: March 1, 1993
Creator: Gabriel, T. A.; Groom, D. E.; Job, P. K.; Mokhov, N. V. & Stevenson, G. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of Back-Illuminated, Fully-Depleted CCD Image Sensors for Use in Optical and Near-IR Astronomy

Description: Charge-coupled devices (CCD's) of novel design have been fabricated at Lawrence Berkeley National Laboratory (LBNL), and the first large-format science-grade chips for astronomical imaging are now being characterized at Lick Observatory. They are made on 300-μm thick n-type high-resistivity (~10,000 Ω-cm) silicon wafers, using a technology developed at LBNL to fabricate low-leakage silicon microstrip detectors for high-energy physics. A bias voltage applied via a transparent contact on the back… more
Date: May 10, 1999
Creator: Groom, D. E.; Holland, S. E.; Levi, M. E.; Palaio, N. P.; Perlmutter,S.; Stover, R. J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Point-spread function in depleted and partially depleted CCDs

Description: The point spread function obtainable in an astronomical instrument using CCD readout is limited by a number of factors, among them the lateral diffusion of charge before it is collected in the potential wells. They study this problem both theoretically and experimentally, with emphasis on the thick CCDs on high-resistivity n-type substrates being developed at Lawrence Berkeley National Laboratory.
Date: October 13, 1999
Creator: Groom, D. E.; Eberhard, P. H.; Holland, S. E.; Levi, M. E.; Palaio, N. P.; Perlmutter, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen