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>>
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.
125803793
SHIELDING MEASUREMENT AT THE CERN 25 GEV PROTON SYNCHROTRON
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.
118130015
LARGE SCALE SUPERFLUID PRACTICE
Since 1979 Lawrence Berkeley Laboratory has been testing superconducting magnets in He II. The 1 atm pressure, 1.8 K, He II, test facility, is an integral part of the LBL Research and Development program on high field superconducting dipole magnets for particle accelerators. Some of the experience gained in this facility and the details of its operation are reported.
139989529
CRYOGENIC MAGNETS AND SYNCHROTRONS, CRYOGENIC AND VACUUM TECHNOLOGIES. SESSION I - Panel Discussion on Superconducting Synchrotrons
119948583
CONNECTION BETWEEN GAUGE INVARIANCE AND MASS
S>The limit, as the bare mass vanishes, of a theory of a massive neutral vector meson interacting with charged fields is investigated. A redefinition of the charged-field operators is exhibited so that the original theory, involving a positive definite metric, goes over smoothly to a radiation gage theory. The spectral forms for the boson twopoint fanction are exhibited to show that the limit to a gage-invariant theory does not restrict the interacting mass of the vector particle. A soluble example is given in which these limits can be studied in detail and in which the gage-invariant limit describes a massive vector particle. (auth)
122057941
BROKEN SYMMETRIES AND MASSLESS PARTICLES
119723627
NEW DISPERSION RELATIONS FOR PION-NUCLEON SCATTERING