Antiproton Acceleration in the Fermilab Main Ring and Tevatron PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The operation of the Fermilab Main Ring and Tevatron rf systems for colliding beams physics is discussed. The changes in the rf feedback system required for the accelration of antiprotons, and the methods for achieving proper transfer of both protons and antiprotons are described. Data on acceleration and transfer efficiencies are presented.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The operation of the Fermilab Main Ring and Tevatron rf systems for colliding beams physics is discussed. The changes in the rf feedback system required for the accelration of antiprotons, and the methods for achieving proper transfer of both protons and antiprotons are described. Data on acceleration and transfer efficiencies are presented.
Author: Publisher: ISBN: Category : Languages : en Pages : 8
Book Description
Fermilab's Tevatron is a proton-antiproton collider with center of mass energy of 1.96 TeV. The antiprotons are produced by 125 GeV protons from the Main Injector striking a stainless steel target. The 8 GeV antiprotons are collected and cooled in the Debuncher and Accumulator rings of the Antiproton Source and, just recently, in the Recycler ring before acceleration by the Main Injector and the Tevatron. In addition to energy, a vital parameter for generating physics data is the Luminosity delivered to the experiments given by a formula that is listed in detail in the paper.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
During the Run II era at Fermilab, the Recycler stores antiprotons at 8 GeV and the Main Injector accelerates the antiprotons and the protons from 8 GeV to 150 GeV for Tevatron injection. The Recycler injects antiprotons to the Main Injector in 2.5 MHz rf buckets. This report presents an acceleration scheme for the antiprotons that involves a slow ramp with initial 2.5 MHz acceleration and subsequent fast acceleration with 53 MHz rf system. Beam acceleration and rf manipulation with space charge and beam loading effects are simulated using the longitudinal simulation code ESME. Simulation suggests that one can expect about 15% emittance growth for the entire acceleration cycle with beam loading compensations. Preliminary experimental results with proton beam will also be presented.
Author: Publisher: ISBN: Category : Languages : en Pages : 156
Book Description
The purpose of the Fermilab Antiproton source is to provide at least $10^$ cooled, accumulated antiprotons for acceleration in the Main Ring and Tevatron for colliding-beams experiments with 1-TeV protons. This will provide the highest available energy in the world for particle-physics experiments through at least the 1980's. Collisions at 2 TeV in the center of mass will provide a unique experimental tool in a new energy range. The design of the Antiproton Source has been carried out by the Colliding Beams Department of the Accelerator Division in collaboration with Argonne National Laborator.y, Lawrence Berkeley Laboratory, the Institute of Nuclear Physics at Novosibirsk, and the University of Wisconsin ...
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The Fermilab Main Ring serves as injector for the Tevatron at 150 GeV/c and as a source of 120 GeV/c protons for antiproton production. This paper discusses the Main Ring performance--intensity, reliability, and efficiency--during the present Collider run. Also discussed are questions related to emittance and emittance growth, both transverse and longitudinal, and the impact of Main Ring losses on the Collider experiments. 4 refs., 3 figs.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The main ongoing project at Fermilab is called the Tevatron, meaning 1,000 GeV in beam energy. The following is a list of major constituents for this project: Super Ring; upgrading external beam lines for experimental areas; electron cooling and antiproton acceleration; and colliding beam facility and its detectors. At present the Super Ring is being build and installed in the Main Ring tunnel. Its injection line is completed and under test. Modification of the tunnel for the Switchyard beam lines is finished. All magnets for the Electron Cooling Ring are installed. Protons are being injected into the cooling ring for study. The designs for the colliding beam facility and its detectors will be finalized shortly. These facilities and their development are described.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The design of the antiproton source for the Fermilab Tevatron-I project (TeV-I) incorporates two separate rings. The Accumulator Ring uses a stochastic cooling/stacking system to accumulate a sufficient number of antiprotons for use in the Tevatron collider. The Debuncher Ring rotates buckets and debunches antiproton pulses from the production target. This requires, in the Debuncher, a choice of lattice transition energy very near the beam energy, resulting in very narrow spread in the circulation frequency. If the energy spread could be further reduced in the Debuncher before the beam is transferred to the Accumulator, operational improvements would result in: (1) the reduction of stochastic cooling power in the Accumulator; (2) the acceptance of a larger momentum bite of antiprotons in the Debuncher (thus more antiprotons); and (3) the reduction of momentum aperture in the Accumulator. This note describes a quick investigation of the feasibility of precooling within the framework of technically achievable parameters.
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Author: Eric R. Lindstrom
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