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420 Matching Results

Start Over Year 1983 Day 9th Language English

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(open access)

High gain free electron laser at ETA

A single pass, tapered electron wiggler and associated beam transport has been constructed at the Experimental Test Accelerator (ETA) at Lawrence Livermore National Laboratory (LLNL). The system is designed to transport 1 kA of 4.5 MeV electrons with an emittance of 30 millirad-cm. The planar wiggler is provided by a pulsed electromagnet. The interaction region is an oversized rectangular waveguide. Quadrupole fields stabilize the beam in the plane parallel to the wiggler field. The 3 meter long wiggler has a 9.8 cm period. The Free Electron Laser (FEL) will serve as an amplifier for input frequencies of 35 GHz and 140 GHz. The facility is designed to produce better than 500 Megawatts peak power.

Date: February 9, 1983

Creator: Orzechowski, T.J.; Prosnitz, D.; Halbach, K.; Kuenning, R.; Paul, A.; Hopkins, D. et al.

Object Type: Article

System: The UNT Digital Library

captions transcript

[News Clip: Miss Texas]

Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story about Dana Rogers of San Antonio being crowned the 1983 Miss Texas. This story aired at 10:00 P.M.

Date: July 9, 1983

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Oil field school]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: March 9, 1983, 6:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

(open access)

Evaluation of Nuclear Facility Decommissioning Projects program

The objective of the Evaluation of Nuclear Facility Decommissioning Projects (ENFDP) program is to provide the NRC licensing staff with data which will allow an assessment of radiation exposure during decommissioning and the implementation of ALARA techniques. The data will also provide information to determine the funding level necessary to ensure timely and safe decommissioning operations. Actual decommissioning costs, methods and radiation exposures are compared with those estimated by the Battelle-PNL and ORNL NUREGs on decommissioning. Exposure reduction techniques applied to decommissioning activities to meet ALARA objectives are described. The lessons learned concerning various decommissioning methods are evaluated.

Date: September 9, 1983

Creator: Baumann, B. L.

Object Type: Article

System: The UNT Digital Library

(open access)

Advanced Test Accelerator (ATA) injector

The ATA injector, developed from experience gained from the Experimental Test Accelerator (ETA) linac, has recently been completed. The injector consists of ten 0.25 MV cells that are used to develop 2.5 MV across a single diode gap. The 10 kA beam is extracted from a 500 cm/sup 2/ plasma cathode at average rates of up to 5 Hz and burst rates to 1 kHz. Pulsed power from 20 water filled blumleins is divided and introduced symmetrically through four ports on each cell. All major insulators are fabricated from filled epoxy castings. With these improvements, the ATA injector is smaller than the ETA injector; has a faster pulse response; has lower voltage stress on insulators and higher ultimate performance. Injector characterization tests began in October 1982. These tests include beam current, energy, and emittance measurements.

Date: March 9, 1983

Creator: Jackson, C. H.; Bubp, D. G.; Fessenden, T. J.; Hester, R. E.; Neil, V. K.; Paul, A. C. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Nuclear-data needs for inertial-confinement fusion (ICF)

Our survey was limited to ICF programs in the United States. It included researchers in laser and heavy ion fusion, target design, target diagnostics, and conceptual reactor design. We asked each of these people to read the current data needs for magnetic fusion energy and to comment on additional data that they require.

Date: May 9, 1983

Creator: Haight, R. C. & Motz, H. T.

Object Type: Article

System: The UNT Digital Library

(open access)

Physics potential of the CBA: a summary

The purpose of this summary is to bring to the attention of the high energy physics community the wide variety of new physics experiments that the high luminosity and high energy of CBA will make possible. These examples are intended to illustrate the power and flexibility of the machine. It will provide the facilities for a very large number of experimentalists to pursue a broad range of physics. The high luminosity allows not only the study of rare processes but also the use of small, special purpose detectors. The six interaction regions can be arranged in different configurations, so, for example, one can be at very high luminosity for a ..mu../sup +/..mu../sup -/ experiment, another can have a small diamond for use with a vertex detector, and so on. There is the possibility of polarized protons, heavy ions and variable energies in the two rings. The machine will be dedicated solely to colliding beam physics. There is a great deal of very important physics that will clearly be done if CBA is built: detailed studies of the W and its interactions, extensive studies of the properties of the b-quark, systematic studies of QCD and proton structure through the Drell-Yan and …

Date: March 9, 1983

Creator: Baggett, N.; Gibbard, B.; Gordon, H.; Paige, F. & Trueman, T.L. (eds.)

Object Type: Report

System: The UNT Digital Library

(open access)

Beam-dump/diagnostics box for a 10-kA 50-MeV, 50-ns electron beam

We have developed a dump for the ATA beam that consists of a series of carbon plates whose collective thickness totals approximately 1.5 ranges at 50 MeV. The energy dissipated in the plates is radiated to a water-cooled wall. The dump is designed to dissipate up to 175 kW of average power. A small hole along the axis of the plates forms a beamlet that passes through an energy analyzer. The analyzer consists of a 60/sup 0/ bending magnet and two high-sensitivity beam-current/position monitors. The ratio of the beamlet current to full current is used to estimate the beam emittance.

Date: March 9, 1983

Creator: White, J.M.; Fessenden, T.J.; Fontaine, R.A.; Harvey, A.R. & Paul, A.C.

Object Type: Article

System: The UNT Digital Library

captions transcript

[News Clip: Breast cancer]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: May 9, 1983, 5:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Sherman murder]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: October 9, 1983, 10:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: State Fair]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: October 9, 1983, 10:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Sherman murder]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: October 9, 1983, 6:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Summit Cabs]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: May 9, 1983, 6:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

captions transcript

[News Clip: Parkland babies]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Date: February 9, 1983, 5:00 p.m.

Creator: KXAS-TV (Television station : Fort Worth, Tex.)

Object Type: Video

System: The UNT Digital Library

(open access)

The Cherokeean. (Rusk, Tex.), Vol. 134, No. 17, Ed. 1 Thursday, June 9, 1983

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.

Date: June 9, 1983

Creator: unknown

Object Type: Newspaper

System: The Portal to Texas History

(open access)

Neptunium separations

Two procedures for the separation of Np are presented; the first involves separation of /sup 239/Np from irradiated /sup 238/U, and the second involves separation of /sup 237/Np from a solution representing that from a dissolved fuel element.

Date: May 9, 1983

Creator: Wild, John F.

Object Type: Report

System: The UNT Digital Library

(open access)

Texas Register, Volume 8, Number 66, Pages 3537-3598, September 9, 1983

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

Date: September 9, 1983

Creator: Texas. Secretary of State.

Object Type: Journal/Magazine/Newsletter

System: The Portal to Texas History