Neutral decays and {gamma} conversions have been analyzed in an exposure of the NAL 30 hydrogen bubble chamber to 205 GeV/c pions. This paper presents preliminary results on inclusive cross sections for the production of {Upsilon}'s, K{sub s}{sup 0}'s, {Lambda}{sup 0}'s and {bar {Lambda}}{sup 0}'s by 205 GeV/c {pi}{sup -}p interactions. The experiment was done in the NAL 30 hydrogen bubble chamber. Six hundred and sixty-four neutral decays (or conversions) found in a scan of 3058 {pi}{sup -}p interactions were measured. During measurement, three percent of these events were rejected as not pointing to the primary vertex. Another 29% were discarded by a fiducial volume cut on the neutral vertex.

Preliminary data are presented on {pi}-production in inclusive pp interactions at 200 GeV/c using the NAL 30-inch bubble chamber and downstream wide-gap spark chambers. Correlations between {pi}{sup -}'s are studied. No strong short-range correlation effect is seen in contrast to ISR results. Further details of the physical characteristics of the hybrid system and track reconstruction are described in accompanying papers. In this paper they present preliminary results on correlations between {pi}{sup -}'s in 200 GeV/c pp interactions obtained from the NAL 30-inch bubble chamber-wide gap spark chamber hybrid system. The physical characteristics of the hybrid system and track reconstruction are described in accompanying papers. The data came from a film sample of 5,000 pictures. By selecting frames with no upstream bubble chamber wall interactions and with the number of beam tracks less than 15, they have obtained 596 events (1604 negative tracks) from all topologies in the first measurement pass. By detecting high momentum secondaries in the spark chambers, they have obtained a complete momentum spectra in the entire range of kinematic variables.

The design of the 2XII-B pulse coil system is presented. Development of the coil geometry is given as well as the results of magnetic field calculations. A discussion of the forces developed by this high-energy coil set and the electrical stress on the magnet insulation is presented. The results of materials selection for both the coil insulation and structure are included, and also a description of the fabrication procedure. (auth)

Recent efforts in controlled fusion experiments have indicated the need for large neutral-beam sources to provide an initial plasma for further plasma buildup, for use as a stoking source to makeup losses, or for plasma heating. Experiments now operating or envisioned for the near future anticipate the need for kilo-amp neutral beams in the 20-keV energy range and higher. These sources will be required to focus into relatively small-volume targets, have good gas efficiency, and use a minimum of excess gas for downstream neutralization. A test facility with sufficient pumping capacity to handle sources of this size is described. The ion source, mockup extraction grid, and the requisite electronic and power equipment for a 200-amp neutral-deuterium beam are discussed. The beam pulse length will be from 2 to 10 msec. (auth)

The development of higher energies and better resolution in heavy-ion beams has led to a resurgence of interest in transfer reactions at energies well above the Coulomb barrier. Direct reactions with heavy ions are discussed in some detail. Heavy-ion reactions open up the possibility of new methods of spectroscopy, e.g., elastic transfer. Differential cross sections for heavy-ion ' transfer reactions are often featureless; however, some data show diffractive effects. The high angular momenta associated with recoil effects in heavy-ion reactions can be exploited to perform selective spectroscopy on light nuclei. Although most heavy-iontransfer data suggest that reactions proceed in a direct fashion, recent experiments indicate the presence of second-order multistep processes. Correlated nucleon transfer and transfer of many nucleons (e.g., (12C, alpha )) are also being investigated. (20 figures, 3 tables, 93 references) (RWR)

From international symposium on high energy physics; Tokyo, Japan (23 Jul 1973). A simple SU(3)-symmetric dual model for meson--baryon scattering is constructed using the crossing invariant duality solution for baryon exchange degeneracy. Predictions of the model for forward pi N scattering, for backward meson --baryon scattering, and for elastic widths of baryons are discussed. (LBS)

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A review is given of the 2X project, including project history and recent results, with the intent that both those new to CTR engineering and those people familiar with its progress will benefit. The current 2XII Program plan is reviewed, with emphasis on the major device fabrication underway at the present time. This construction consists primarily of a new magnet for 2XII, and has been designated 2XIIB. The injection of a 800-A neutral beam is described. The final portion of the paper is a progress report and a summary of cost estimates and scheduling. (auth)

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Both mirror machines at LLL, Baseball II and 2XII, require neutral-beam injection of hydrogen or deuteriurm into the plasma. The neutral-beam injector components and their function in the injector system are outlined. Some of the problems with the ion sources, neutralizers, magnetic shielding, beam burial, and vacuum pumping are discussed. (auth)

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From fifth sympoaium on engineering problems of fusion research; Princeton, New Jersey, USA (6 Nov 1973). A review is given of the 2X project, including project history and recent results, with the irtent that both those new to controlled thermonuclear research engineering and those people familiar with its progress will benefit. The current 2XII program plan is reviewed, with emphasis on the major device fubrication underway at the present time. This construction consiats primarily of a new magnet for 2XII, and has been designated 2XIIB. The injection of a 600A neutral beam is described. The ftnal portion of the paper is a progress report and a summary of cost estimates and scheduling. (MOW)

A vacuum pumping system that provides a cryo surface for condensing and freezing of H/sub 2/ gas is described. A closed-loop vacuum system was designed and built at Lawrence Livermore Laboratory to pump down the neutralizer LH/sub e/ dewar with a volurae of 350 l and the lambda point dewar with a LH/sub e/ volume of 250 l. Both of these dewars can be pumped down simultaneously or one at a time. 100% of the H/sub e/ gas is recovered free of contaminations. The vacuum pump can handle 340 SCFM of gas. The LH/sub e/ dewars are pumped down below the lambda point. This condition reduces the LH/sub e/ container wall temperature to 2.1 deg K giving a base pressure of 10/sup -13/ torr for H/sub 2/ gas/sup 2/. To attain a stable condition the LH /sub e/ baths are puuped down to 33 torr or lower to give a surface temperatare of about 2/sup 0/K/sup 3/. The Baseball II helium factlity is a close loop system. The H/sub e/ gas is recovered from all the LH/sub e/ usage point. This gas is accumulated in one of the two 8000 cu ft inflatable gas bags. The gas from the gas …

From meeting of the division of particles and fields; Berkeley, California, USA (13 Aug 1973). A review is given of selected topics in K/sup 0/ decays for which recent results have led to substantial progress and/or cortroversy. (auth)

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A very brief review of radiation effects in graphite is given followed by projections of graphite behavior in four fusion reactor design concepts: the ORNL Conceptual Fusion Reactor (Version III), the University of Wisconsin Tokamak (Austin Design), the LASL Reference Theta Pinch Reactor, and the PNL Fusion-- Fission Hybrid Reactor. These projections are based on property changes observed for graphite samples irradiated in fission reactors and the calculated numbers of atomic displacements. Correlations between the relative atomic displacements in the fusion and fission reactor spectra were made using the Lindhard theoretical treatment of atomic stopping cross sections and neutron scattering cross section data from ENDF/B-III. The results predict graphite lifetimes of roughly 2500, 7500, 200, and 10000 full power days for the above four reactor concepts, respectively, using the typical nuclear-grade graphites. Discussions of areas that require additional work to improve these and future projections are presented. (auth)

From international astronomical union symposium on coronal disturbances; Surfers Paradise, Australia (3 Sep 1973). Apparatus was designed for installation on the Concorde SST to provide high resolution emission line profiles at the June 30, 1973 total solar eclipse. A prime objective was to obtain profiles that could be used to detect the coronal response to the 5 min periodicities observed in the solar photosphere. Stability of the sky scattered light, drastic reduction of seeing effects enhanced the value of the exceptional opportunity. Preliminary results are discussed for a single region on the limb, above an active sunspot group. (auth)

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From meeting of the division of particles and fields; Berkeley, California, USA (13 Aug 1973). Data are presented on diffraction dissociation in pi /sup -/p yields pi /sup -/p and pi /sup -/p yields pi /sup -/ pi /sup - / pi /sup +/p interactions at 205 GeV/c. Mass spectra and cross sections for pion dissociation and nuclear dissociation are presented. (LBS)

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