Tune Control in the Fermilab Main Injector
نویسندگان
چکیده
We describe methods used to measure and control tunes in the Fermilab Main Injector (FMI). Emphasis is given to software implementation of the operator interface, to the front-end embedded computer system, and handling of hysteresis of main dipole and quadrupole magnets. Techniques are developed to permit control of tune of the Main Injector through several acceleration cycles: from 8.9 GeV/c to 120 GeV/c, from 8.9 GeV/c to 150 GeV/c, and from 150 GeV/c to 8.9 GeV/c. Systems which automate the complex interactions between tune measurement and the variety of ramping options are described. Some results of tune measurements and their comparison with the design model are presented.
منابع مشابه
Selective Resonant Extraction from the Fermilab Main Injector Using Electron Lens
We propose to use an electron lens for slow extraction of proton bunches from the Fermilab Main Injector. Negatively charged electron beam colliding with protons causes positive tune shift proportional to the electron current. If the resulting tune satisfies resonance condition, protons move to larger betatron amplitudes as in conventional slow extraction systems. Time variation of the electron...
متن کاملDesign for Fermilab Main Injector Magnet Ramps Which Account for Hysteresis
Although the dominant fields in accelerator electromagnets are proportional to the excitation current, precise control of accelerator parameters requires a detailed understanding of the fields in Main Injector[1][2]magnets including contribution from eddy currents, magnet saturation, and hysteresis. Operation for decelerating beam makes such considerations particularly significant. Analysis of ...
متن کاملAn Expression of Interest to Detect and Measure the Direct CP Violating Decay K L → π 0 νν and Other Rare Decays at Fermilab Using the Main Injector September 22 , 1997 The KAMI Collaboration
We, the KAMI (Kaons At the Main Injector) collaboration, express our interest to continue the experimental program of rare kaon decay physics at Fermilab using the Main Injector. The 120 GeV Main Injector beam will provide neutral kaon beams which are two orders of magnitude more intense than those currently available at Fermilab. This dramatic increase in flux will allow us to study direct CP ...
متن کاملMeasurement of Electron Cloud Density with Microwaves in the Fermilab Main Injector*
Electron cloud density in the Fermilab Main Injector was measured by observing microwave transmission along the vacuum tube. Presence of the electron cloud reduces the velocity of the microwave signal. Both frequency and time domain methods reveal relative cloud density and time evolution. The effect of beam time structure is clearly evident. The accelerator magnetic field effects the distribut...
متن کاملMain Injector Particle Production Experiment (MIPP) at Fermilab
The Main Injector Particle Production Experiment at Fermilab uses particle beams of charged pions, kaons, proton and anti-proton with beam momenta of 5 to 90 GeV/c and thin targets spanning the periodic table from (liquid) hydrogen to uranium to measure particle production cross sections in a full acceptance spectrometer with charged particle identification for particles from 0.1 to 120 GeV/c u...
متن کامل