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New limits on residual RTL eta from Linac wakefields

Description: Effects of Linac transverse wakefields are combined with residual eta and partially compressed bunches (presently the SLC design) to place much tighter, current dependent limits on residual eta and eta'. The limits are comparable to or exceed those needed at the SLC final focus. These limits will be difficult to maintain due to present experimental resolution.
Date: May 16, 1986
Creator: Seeman, J. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tissue-Equivalent Torso Phantom for Calibration of Transuranic-Nuclide Counting Facilities

Description: Several tissue-equivalent human-torso phantoms have been constructed for the calibration of counting systems used for in-vivo measurement of transuranic radionuclides. The phantoms contain a simulated human rib cage (in some cases, real bone) and removable model organs, and they include tissue-equivalent chest plates that can be placed over the torso to simulate people with a wide range of statures. The organs included are the lungs, liver, and tracheobronchial lymph nodes. Polyurethane with va… more
Date: January 16, 1986
Creator: Griffith, R. V.; Anderson, A. L.; Dean, P. N.; Fisher, J. C. & Sundbeck, C. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

PLIC signal voltages in the SLAC accelerator scaled to the SLC arcs

Description: To detect conditions and to forestall events in which an electron or positron beam might otherwise melt a hole in its SLC arc vacuum chamber, and to provide information on the magnitude and location of these and other, less harmful, beam losses, it is planned to install two PLIC cables along each arc, one on each side of the magnet string. A similar system (but with one long ion chamber) has been in use at SLAC for 20 years. Electromagnetic shower calculations have been made to estimate the ion… more
Date: June 16, 1986
Creator: Jenkins, T. M.; Nelson, W. R. & Reagan, D. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A thin-collector Bayard-Alpert gauge for 10/sup -12/ Torr vacuum

Description: The changes in the sensitivity (S) and the equivalent X-ray limit (P/sub x/) of several Bayard-Alpert gauges (BAGs) were studied when the size of the collectors was reduced from 125 ..mu.. to 50 ..mu.. and when different mounting envelopes were used. Based on this study, 400 custom BAGs with 50 ..mu.. collector were purchased from a vendor. The S and the P/sub x/ of these thin-collector BAGs were also measured.
Date: October 16, 1986
Creator: Hseuh, H. C. & Lanni, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Matter oscillations and solar neutrinos: A review of the MSW (Mikheyev-Smirnov-Wolfenstein) effect

Description: We review the theory of the Mikheyev-Smirnov-Wolfenstein effect, in which matter oscillations can greatly enhance ''in vacuo'' neutrino oscillations, and we examine its consequences for the solar neutrino problem. Using a two-flavor model, we discuss the solutions in the ..delta..m/sup 2/-sin/sup 2/2THETA parameter space for the /sup 37/Cl experiment, and describe their predictions for the /sup 71/Ga experiment and for the spectrum of electron-neutrinos arriving at earth. We also comment on the… more
Date: July 16, 1986
Creator: Rosen, S. P. & Gelb, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Inverse Cerenkov LPA experiments. 1986 Annual report

Description: This report discusses the progress made on laser particle acceleration. First a brief discussion of the collaboration with the University of California at Santa Barbara to examine the technical trade-offs involved in the choice of an inverse Cerenkov (IC) demonstration experiment. The goals of the IC demonstration experiment are to show the applicability of the IC mechanism to electron beam focusing and acceleration. The second part of this report covers glancing incidence measurements of mirro… more
Date: December 16, 1986
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Uncertainties in scientific measurements

Description: Some examples of nuclear data in which the uncertainty has been underestimated, or at least appears to be underestimated, are reviewed. The subjective aspect of the problem of systematic uncertainties is discussed. Historical aspects of the data uncertainty problem are noted. 64 refs., 6 tabs.
Date: November 16, 1986
Creator: Holden, N. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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