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Heavy ion drivers for inertial confinement fusion

Description: The advantages of heavy ion beams as a way of delivering the needed energy and power to an inertial fusion target are surveyed. The existing broad technology base of particle accelerators provides an important foundation for designing, costing, and evaluating proposed systems. The sequence of steps needed for the verification of the heavy ion approach is described; recent research results are even more encouraging than had been assumed hitherto.
Date: December 1, 1983
Creator: Keefe, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Spiral kicker for the beam abort system

Description: A brief study was carried out to determine the feasibility of a special kicker to produce a damped spiral beam at the beam dump for the beam abort system. There appears to be no problem with realizing this concept at a reasonably low cost.
Date: January 1, 1983
Creator: Martin, R.L.
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Partner: UNT Libraries Government Documents Department
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Design desiderata for a laminar flow quadrupole-focused acceleration column

Description: The Pierce design acceleration column has been widely used to accelerate high current beams. It operates well in the space charge limited condition, and will produce beams with a temperature comparable with that of the source. It is restricted in current density, however, by the Child-Langmuir relation. If the ion source itself is not the limiting constraint, then the achievable current density is limited by the electric field at which sparking occurs. One sees clearly that the achievable curre… more
Date: January 1, 1983
Creator: Maschke, A.W.
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Partner: UNT Libraries Government Documents Department
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Pressure bump instability in very large cold bore storage rings

Description: Calculations have been done to estimate the circulating current necessary to induce the onset of a pressure bump instability in a cold bore storage ring. For a wide range of storage ring parameters, the instability threshold current is more than an order of magnitude higher than the operating current. 4 references, 2 tables.
Date: December 1, 1983
Creator: Limon, P.
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Partner: UNT Libraries Government Documents Department
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Lattice for a low-field superconducting super collider

Description: In this paper I present a simple lattice suitable for a Superconducting Super Collider (super-super). This super-super lattice is designed for storage of 20-TeV protons using bending magnets with peak fields of B = 2.1 T. The low-field value is chosen so that the present work may complement presentations of highfield lattices (5 T and 6.5 T) given elsewhere at this workshop, and so that this lattice may be used as a working tool to identify field-dependent aspects of the accelerator design.
Date: January 1, 1983
Creator: Neuffer, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutron therapy facility at the Institute of High Energy Physics, Academia Sinica

Description: The 10 MeV proton linac which was designed as preinjector for the Beijing 50 GeV Proton Synchrotron (BPS) was completed by the end of 1982. Because of the economic readjustment in the People's Republic of China the BPS project was cancelled. Then, the Institute of High Energy Physics decided to increase the energy of the linac from 10 MeV to 35.5 MeV. This increase will take place using the primary five megawatts RF system of the 10 MeV linac. This 35.5 MeV proton linac will be used for researc… more
Date: December 1, 1983
Creator: Zhu, Y.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Brief summary of staffing levels at Fermilab during initial construction years

Description: This paper very briefly summarizes the work of the various groups that were involved from the beginning through the end of the initial construction phase of the Fermilab project (defined here to be July 1, 1972) and the final construction or completion phase which is here defined as December 31, 1973. The numbers in this report have been gathered by examining the personnel records of Fermilab with the research being done by Chuck Marofske, the Head of Laboratory Services and his staff and by as… more
Date: November 1, 1983
Creator: Livdahl, P.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Emittance growth in the collider arcs due to transverse wakefields

Description: The three main components of the dipole wakefield in the collider arcs are the resistive wall wake due to the finite conductivity of the vacuum chamber wall and the wakes due to discontinuities at the beam position monitors and vacuum chamber bellows. In the first section we estimate the dipole wakefield arising from the resistive wall wake. In the second section results of TBCI calculations of the wakes due to the BPM's and bellows are presented, and compared with the resistive wall calculatio… more
Date: December 1, 1983
Creator: Peterson, J. M. & Wilson, P. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Prospects of the surfatron laser plasma accelerator

Description: The surfatron concept is proposed as a possible solution to the problem of staging in the laser-plasma beat wave accelerator scheme. Prospects of a 100 GeV particle accelerator based on the surfatron concept are explored. Finite angle optical mixing appears to be a promising solution for drastically reducing the width of the plane wave, thereby, making the required laser power and the device size realizable for a proof-of-principle experiment. Our conclusions are based mainly on analytical theo… more
Date: January 1, 1983
Creator: Katsouleas, T.; Joshi, C.; Mori, W. & Dawson, J.M.
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Partner: UNT Libraries Government Documents Department
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Relativistic fluid equations of motion, equilibrium and stability of beams

Description: A general relativistic fluid formulation has been obtained by Siambis. The set of relativistic fluid equations includes a general equation of state. The use of these equations, however, is hampered by the presence of additional fluid variables resulting from relativistic corrections. The systematic expansion and associated nice variables introduced by Newcomb, have been utilized in the formulation of Siambis to yield a compact set of relativistic fluid equations which is the relativistic genera… more
Date: January 1, 1983
Creator: Siambis, J.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Some experiments with heavy ion accelerators

Description: Studies of nuclear structure at high angular momentum are currently one of the main research topics at the Argonne Superconducting Linac. Some of the techniques used in ..gamma..-ray spectroscopy are discussed. Target properties required for the experiments are reviewed. Some recent results are presented.
Date: January 1, 1983
Creator: Janssens, R.V.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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BNL RFQ

Description: A brief outline of the theoretical design has been presented at the Symposium. Particular emphasis has been placed on the rf design of the main cavity, end cells, and power feed. The relevance of the design has been considered with respect to the tuning and operating characteristics of the structure.
Date: January 1, 1983
Creator: Giordano, S.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Particle accelerator control and data acquisition in the context of VAX/VMS

Description: The Los Alamos Meson Physics Facility (LAMPF) Control System monitors and controls a linear accelerator through more than 10,000 widely disparate I/O devices. The heart of the Control System software is the Data System, which provides a uniform application program interface based on symbolic device names. In many ways the Data System parallels the VAX/VMS Record Management Services (RMS) in its needs for asynchronous operations, protection, and locks for multiprocess interactions. Since the acc… more
Date: January 1, 1983
Creator: Schaller, S.C. & Corley, J.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Shielding of Tevatron Meson Laboratory target piles - M-west, M-center, M-polarized

Description: This note reports on shielding calculations pertinent to the new target piles planned for the Meson Detector Building. The primary emphasis here is upon the external dose equivalent rates and groundwater activation. A previous TM describes the activation of the target, sweeping magnet cooling water, and beam sweeping magnets. A separate note summarizes the radiation protection aspects of the muon radiation due to all four meson target piles and is attached.
Date: December 1, 1983
Creator: Cossairt, J.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status and future plans for the BNL polarized H/sup -/ source

Description: In 1982, when Haeberli described the design and performance of his 3 ..mu..A polarized negative hydrogen source, he predicted that the colinear colliding beam source had the potential to produce H/sup -/ beam currents well in excess of 10 ..mu..A. The recently constructed AGS source, which is similar to Haeberli's system, has reached peak beam currents in excess of 25 ..mu..A, while operating in the pulsed mode. Standard operation of the AGS machine is 10 ..mu..A in beam pulses of 0.5 ms each t… more
Date: January 1, 1983
Creator: Sluyters, T.; Alessi, J. & Kponou, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fifty megawatt klystron for the Stanford Linear Collider

Description: The proposed Stanford Linear Collider (SLC) has been designed to provide 50 on 50 GeV electron-positron collisions. The performance of the 240 klystrons driving the two-mile long linac must be upgraded to achieve at least 50 Megawatts of peak power output at a pulse of 5 ..mu..sec and a pulse repetition frequency of 180 pulses per second. The operating frequency of the upgraded linac will continue to be 2856 MHz. A klystron amplifier meeting these new requirements has been designed to operate a… more
Date: September 1, 1983
Creator: Lee, T. G.; Lebacqz, J. V. & Konrad, G. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Heavy ion fusion year-end report, April 1, 1983-September 30, 1983

Description: Some highlights of the program during this reporting period are as follows: (1) First results with the completed apparatus of the Single Beam Transport Experiment (SBTE) have shown the stable propagation of a space-charge-dominated cesium-ion beam through 41 periods of an AG focussing lattice. The space-charge effects were large enough to depress the betatron phase advance per cell from sigma/sub 0/ = 60/sup 0/ to sigma = 12/sup 0/. (2) Understanding of the reflection stabilization of longitudi… more
Date: November 1, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ionization of polarized hydrogen atoms

Description: Methods are discussed for the production of polarized H/sup -/ ions from polarized atoms produced in ground state atomic beam sources. Present day sources use ionizers of two basic types - electron ionizers for H/sup +/ Vector production followed by double charge exchange in a vapor, or direct H/sup -/ Vector production by charge exchange of H/sup 0/ with Cs/sup 0/. Both methods have ionization efficiencies of less than 0.5%. Ionization efficiencies in excess of 10% may be obtained in the futur… more
Date: January 1, 1983
Creator: Alessi, J.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Attempt to compare two arc orbit correction schemes analytically

Description: Consider a transport line that consists of periodic cells. Let the beam position monitors and the orbit correctors be located with the same period as the cells and let the BPM's and the corrector distributions interlace each other. The arrangement does not always provide a stable orbit correction. The criterion for stability has been derived by Joe Murray and is reproduced. We calculate the rms orbit, the effect of BPM errors and the rms corrector strength in such correction schemes, yielding a… more
Date: December 15, 1983
Creator: Chao, A. & Weng, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Brookhaven National Laboratory Tandem Facility

Description: Our MP7 accelerator has had about 70% utilization in the past year, clocking 6000 hours, of which approximately 10% was at terminal voltages between 14.75 and 16.25 MV. This pelletron system, installed in 1977, has logged 40,000 hours, and to date has broken five chains, three in the past four months. There are still two chains that have gone the total time. The injector machine, MP6, with its three chains installed in 1980, has accumulated 18000 hours with no chain failures. About six percent … more
Date: January 1, 1983
Creator: Lindgren, R.
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Partner: UNT Libraries Government Documents Department
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Elementary stochastic cooling

Description: Major headings in this review include: proton sources; antiproton production; antiproton sources and Liouville, the role of the Debuncher; transverse stochastic cooling, time domain; the accumulator; frequency domain; pickups and kickers; Fokker-Planck equation; calculation of constants in the Fokker-Planck equation; and beam feedback. (GHT)
Date: December 1, 1983
Creator: Tollestrup, A.V. & Dugan, G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Models and simulations

Description: On-line mathematical models have been used successfully for computer controlled operation of SPEAR and PEP. The same model control concept is being implemented for the operation of the LINAC and for the Damping Ring, which will be part of the Stanford Linear Collider (SLC). The purpose of this paper is to describe the general relationships between models, simulations and the control system for any machine at SLAC. The work we have done on the development of the empirical model for the Damping R… more
Date: September 1, 1983
Creator: Lee, M. J.; Sheppard, J. C.; Sullenberger, M. & Woodley, M. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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