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478 Matching Results
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Use of molybdenum ion source electrodes at RTNS-II
Reports are reported for an ongoing effort to optimize D+ beam production by the MATS-III ion source used at RTNS-II. The three seven-aperture electrodes, originally consisting of water-cooled copper, have now been tested using uncooled molybdenum and with water cooling on the second (decel) electrode only. Details of the change, the results of the testing, and the benefits in operation, performance and cost are given.
Date:
September 29, 1986
Creator:
Massoletti, D.J.; Harter, G.A. & Heikkinen, D.W.
Object Type:
Article
System:
The UNT Digital Library
Top quark and light Higgs scalar mass bounds in no-scale supergravity
No-scale supergravity theories with the minimal low-energy particle content are shown to become untenable for a top quark mass m/sub T/ much less than 40 GeV. For m/sub T/ < 55 GeV, a stringent upper bound operates on the mass of the lowest-lying Higgs scalar. Further, the Higgs pseudoscalar is constrained to be nearly a quarter as massive as the gluino.
Date:
August 29, 1986
Creator:
Roy, P.
Object Type:
Article
System:
The UNT Digital Library
Oxide cathode lifetime improvements at RTNS-II
Results are reported for an ongoing effort to optimize D/sup +/ beam production by the MATS-III ion source used at the RTNS-II. The oxide cathode assembly originally designed for lower power operation has been modified and redesigned for higher electron current yield, longer life and serviceability. A factor of 2.5 has been gained in cathode lifetime due to these changes. The details of the changes and results and benefits in operation and performance are given. In addition, the technique used for manufacture of the filament is described.
Date:
September 29, 1986
Creator:
Massoletti, D.J.
Object Type:
Article
System:
The UNT Digital Library
Control of beam dynamics in high energy induction linacs
The Advent of laser-ion-guiding in the Advanced test Accelerator along with the development of accelerator cavities optimized with respect to beam breakup coupling impedence now make it possible to consider a new class of high current, high emergy linear induction accelerators. The control of the beam breakup and other instabilities by laser guiding and by various magnetic focusing schemes will be discussed along with the scaling laws for the design of such machines to minimize the growth of the beam breakup instability. Many linacs, particularly induction linacs are limited in performance by the beam breakup (BBU) instability. The instability is found in two forms. In the first form the accelerating cavities communicate with one another through interaction with the beam and through propagation of cavity fields through the accelerator structure. In the second form which is the more virulent of the two, the cavities couple to each other only through their interactions with the beam. It is this second form of PPU that will be discussed in this paper.
Date:
July 29, 1986
Creator:
Caporaso, G.J.
Object Type:
Article
System:
The UNT Digital Library
Does the photino decay
The stability of the lightest superpartner is a crucial aspect of many experimental searches for supersymmetry and of supersymmetric dark matter candidates. It is shown that R parity may occur in operators of dimension four or less as an accidental consequence of an exact Z/sub N/ symmetry. In this case the lightest superpartner can decay via higher dimension operators. The lifetime depends on the scale of the new physics responsible for the non-renormalizable operators; it could be anywhere in the region 10/sup -20/ seconds to 10/sup +20/ seconds. Explicit examples are given. 12 refs.
Date:
August 29, 1986
Creator:
Hall, L.J.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0137.0755]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
October 29, 1986
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0256.0074]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Barbara Wermy handles the equipment that fills the bottles."
Date:
January 29, 1986
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0223.0243]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Shirley Royer smocks a bubble romper - one of 60 garments she has made for her granddaughters."
Date:
June 29, 1986
Creator:
McGee, Minerva
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0257.0093]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Local cacti expert Charles Henthorne shows a nipple, gold spine strawberry and golden barrel cacti, from left."
Date:
July 29, 1986
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0256.0452]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
October 29, 1986
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0265.0192]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Hoping to brighten hospital stays for patients at Deaconess Hospital, these women - Haidee Smith, left, and Rosemary Petsizk - decked themselves out in Easter bonnets."
Date:
March 29, 1986
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0256.0072]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Evenly Bointy sorts filled bottles to be labeled."
Date:
January 29, 1986
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0256.0073]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Karin Pickard adds an ingredient to a batch of cosmetic in the blending mixer."
Date:
January 29, 1986
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0232.0119]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Veterinarian Robert Gwin and assistant Alice Anne Nix examine a cat's eye."
Date:
January 29, 1986
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0270.0130]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Marjorie Humphrey tends newly planted tomatoes from her comfortable seat on the edge of her raised-bed vegetable garden."
Date:
April 29, 1986
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0260B.0666]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jon Holder Sr. shows some mementos of his father's military career."
Date:
July 29, 1986
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0254.0404]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Norman's Shea Heatherington earned bragging rights as the best tennis player in the state as the 16-year-old junior captured the class 4A singles title in last week's state high school championships."
Date:
April 29, 1986
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0331]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Midwest City rosarian Thad Curtis shows his newest hybrid miniature rose, "Little Pioneer."
Date:
September 29, 1986
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0246.0359]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bud and Marilyn Meade, Prosser and Sandy Mellon, Pittsburgh, and Ed Hamilton, from left, talk at the Meades backyard dinner."
Date:
June 29, 1986
Creator:
Howell, Paul S.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0260B.0665]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 29, 1986
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0232.0118]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
January 29, 1986
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0257.0152]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Heritage Hall students wait excitedly for the bingo numbers to be called."
Date:
January 29, 1986
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0225.0143]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
April 29, 1986
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0249.0404]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bob Harris"
Date:
October 29, 1986
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History