124518932
SUPERCONDUCTIVITY FOR HIGH ENERGY PHYSICS AT LRL-BERKELEY.
The LRL-Berkeley superconducting program related to high energy pbsics is described in functional terms. DCn2agnets for use in accelerator experimental areas are discussed as are pulsed magnets as would be appropriate to a proton synchrotron. Fundamental studies and areas of cryogenic engineering and system investigations are outlined. -1.UCRL-19769 April 17, 1970 Superconductivity For High Energy Physics at LRL_Berkeley * W.S. Gilbert and R. Meuser a Lawrence Radiation Laboratory Berkeley, California I Introducn Superconducting magnet systems have been under study at LRLBerkeley since 1965, first in the200 BeV Accelerator Study Group, and later in the Advanced Accelerator Study Group. We here refer to magnets specifically for use with high energy accelerators and associated physics experimental areas. Other groups at LRL have built and used superconducting magnets for other uses; chemistry, inorganic materials, solid state physics, cosmic ray studies. In the course of the 200 BeV study, we investigated the relative costs and advantages of utilizing superconducting transport elements which, technoLogically, seemed to be.just coming of age. The initial studies showed that the superconducting magnets might be competitive in costs with the conventional copper and iron magnets in the experimental area but the uncertainties were larger than the indicated cost difference between the two approaches. A joint LRL-NAL superconducting program, conducted at LRL, was funded in F 1968-1969 with its major goal of reducing the uncertainties involved in using superconducting transport elements in the 200 BeV experimental areas. During Fl 1970 our major emphasis shifted to Bevatron area magnets which generally are of larger aperture and are shorter than those needed b for the 200 BeV accelerator. Cryogenic engineering, cryogenic system studiesand operational a tests comprise an important portion of our overall program. Fundamental studies of superconducting material include measurements on magnetization, flux jump stability, pulsed losses, and magnetic fields. The study and
27906325
Quadrupole magnets for the SSC
The authors have designed, constructed, and tested four short (1-m) models and six full-size (5-m) models of the Superconducting Super Collider (SSC) main-ring 5-m focusing quadrupole magnet (211 T/m). The results of this program are summarized. The magnet construction, test procedures, and test results are discussed. Except for modest training above the SSC operating point, the magnets performed very well and proved to be self-protecting. Some design flaws, e.g., inadequate end-clamping and pole shimming, were identified and corrected sufficiently so that the later magnets exceeded specifications.<<ETX>>
164826618
LATERAL DISTRIBUTION OF NUCLEAR CASCADE AND CONSEQUENCES THEREOF
134768087
Superconducting synchrotron-storage ring (ESCAR)
Author(s): Byrns, R.; Elioff, T.; Gilbert, W.; Green, M.; Hartwig, E.; Lambertson, G.; Lou, K.; Meuser, R.; Pope, W.; Staples, J.; Tanabe, J.; Wolgast, D.
37875611
A 9.1-T Iron-Free Nb-Ti Dipole Magnet with Pancake Windings
An eight-pancake Nb-Ti dipole magnet, with bent up ends, called D-108B has been built and tested. This magnet is a Nb-Ti version of a Nb/sub 3/Sn magnet designed to produce a 10-tesla dipole field in a 40 mm diameter aperture. The pancack design is used for the heavy 12,000 ampere Nb/sub 3/Sn cable because of the mechanical difficulty in winding such a heavy cable into the conventional nested cylindrical shell configuration with a 2'' inner winding diameter. The Nb-Ti version operates at 1.8K, in He II, has superconducting cable half as thick as the Nb/sub 3/Sn cable, and operates at half the operating current: 6000 A rather than 12,000 A at 10 tesla. Both magnets are approximately one meter long. D-10B was tested from January 26 to February 2, 1983 and reached short-sample performance in both He I and He II after moderate training. The central field at 4.3K is 7.0 (+- 0.1) tesla, and at 1.8K is 9.1 (+- 0.2) tesla. Ramp rate sensitivity and cyclic heating data were also measured.
45467358
Items from the Construction of ESCAR
ESCAR is an experimental superconducting accelerator which is being built at Lawrence Berkeley Laboratory to gain timely, full-scale experience in the construction and operation of a fully cryogenic accelerator. A report is given of the construction of several non-conventional items.
122057941
BROKEN SYMMETRIES AND MASSLESS PARTICLES
119723627
NEW DISPERSION RELATIONS FOR PION-NUCLEON SCATTERING