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in creator/contributor: "Hansborough, L. D."  
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Vacuum properties of sintered SmCo/sub 5/ magnets

Description: There are many desirable applications of powerful, rare-earth permanent magnets made of sintered SmCo/sub 5/ material within vacuum systems. One application is the use of large numbers of SmCo/sub 5/ magnets to provide the undulating magnetic field in a free-electron-laser wiggler structure. Tests were conducted at Los Alamos to determine the suitability of SmCo/sub 5/ magnets in a vacuum environment of approx. 10/sup -6/ torr. The vacuum performances of the wiggler system, with and without the… more
Date: December 1, 1981
Creator: Warren, R. W.; DePaula, R. F. & Hansborough, L. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanical design of RFQ resonator cavities in the 400-MHz frequency range

Description: Many RFQ resonator-cavity design concepts have been proposed in the 400-MHz frequency range. Los Alamos has been evaluating RFQ resonator-cavity designs that provide acceptable combinations of necessary mechanical features, easy tunability and long-term stability. Four RFQ resonator test cavities have been fabricated to test rf joints between the RFQ vanes and the resonator cavity. Two of these joints (the C-seal and the rf clamp-joint) allow vane movement for tuning. These test data, and the d… more
Date: January 1, 1981
Creator: Hansborough, L. D.; Potter, J. M. & Wilson, N. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Accelerator drift-tube braze-joint failures in the PIGMI APF cavity

Description: During the assembly of the Alternating Phase Focusing cavity for the PIGMI Prototype proton accelerator, recurring failures of drift-tube braze joints occurred. In the fabrication technique, a torch braze was used to attach the stems to both the drift-tube body and the stem termination; all materials used were stainless steel. The assemblies were copper plated, using bright-acid-leveling copper plating. Some braze joints, although satisfactorily tension-tested before plating, later failed at a … more
Date: January 1, 1981
Creator: Hansborough, L. D.; Levinson, L. S.; Reiswig, R. D. & Wilkerson, L. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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