It is generally noted that at an undulator straight section, the horizontal beta function is made to be large while the vertical beta function is relatively small. On the other hand, at a wiggler straight section, both horizontal and vertical beta functions are made to be small. In this note we describe a procedure with which optimum settings of the beta functions in the insertion straight section are to be determined. For this we consider separately for the undulator radiation and the radiation from the wiggler device. Since the brilliance of radiation is a canonically conserved quantity, we use the brilliance as a figure of merit for the consideration. Then the optimization process is to find a set of horizontal and vertical beta functions which would give the maximum brilliance when the natural emittance, emittance coupling constant, length of insertion device and the photon energy to which the insertion device is optimized are specified. The next step of the study is to find sensitivities of the beta functions to the brilliance.

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Three important high-temperature, high-density experiments were conducted recently using the 10-TW, short-wavelength Novette laser system at the Lawrence Livermore National Laboratory. These experiments demonstrated successful solutions to problems that arose during previous experiments with long wavelength lasers (lambda greater than or equal to 1..mu..m) in which inertial confinement fusion (ICF), x-ray laser, and other high-temperature physics concepts were being tested. The demonstrations were: (1) large-scale plasmas (typical dimensions of up to 1000 laser wavelengths) were produced in which potentially deleterious laser-plasma instabilities were collisionally damped. (2) Deuterium-tritium fuel was imploded to a density of 20 g/cm/sup 3/ and a pressure of 10/sup 10/ atm. (3) A 700-fold amplification of soft x rays by stimulated emission at 206 and 209 A (62 eV) from Se/sup +24/ ions was observed in a laser-generated plasma. Isoelectronic scaling to 155 A (87 eV) in Y/sup +29/ was also demonstrated.

The N30 lattice discussed in a previous note showed that a nearly matched lattice could be produced by separating four of the present quadrupole from their present power supplies and powering them separately. Although having significantly higher dynamic aperture, less closed orbit distortion and improved natural emittance compared to the present Aladdin lattice, the proximity of the {nu}{sub x} = 5.24 tune was felt to be too close to the 3{nu}{sub x} = 16 (a structure resonance) and the tune should be raised. In order to demonstrate the tunability of this modified lattice, Yang Cho found a new tune ({nu}{sub x} = 6.27, {nu}{sub y} = 6.23), hereafter called L2V2 lattice. This lattice, although not as nicely matched as the N30 lattice, has a 10% lower natural emittance and considerably more dynamic aperture. The L2V2 lattice has not been fully optimized, but is sufficient to demonstrate the advantages of this modified Aladdin lattice.

Twelve phosphorescent screens were beam tested for linearity, uniformity, low radiation damage and a suitable emitted wavelength for use with television cameras. One screen was chosen for the construction of several intercepting profile monitors which were used during the SLC Ten Sector Tests to measure the emittance and wakefield effects of a damped electron beam.

At the 0.08 BAC level of alcohol, braking, steering, lane changing, and judgment are degraded and the driving performance of virtually all drivers is substantially impaired. During the debate on reauthorization of the federal surface transportation programs, an amendment that would require each state either to enact a 0.08 BAC law or face the loss of a portion of its Federal Highway Trust Fund monies passed the Senate and will likely be considered in the House. This proposal raises questions about the effectiveness and impacts of a 0.08 BAC law, the rights of states versus the federal government, and alternative ways to encourage the states to adopt stronger impaired driving countermeasures.

Response is given to various questions on alignment tolerances for the permanent magnet sextupoles (PMS's) in the damping rings. Consideration is given to rotational errors, strength/longitudinal placement errors, transverse placement errors, pitch/yaw or tilt errors, and harmonic field errors. Resulting error limits can be specified in terms of the maximum errors allowed in the distribution. (LEW)

Weekly report of the Texas Crop and Livestock Reporting Service on broiler chick numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks, from the week ending April 27 to the week ending June 1, during 1984 and 1985 for broiler eggs set, chicks hatched, and chicks placed.

This document summarizes the results of experiments which investigated the effects of radiation on simulated potassium tetraphenylborate slurries.