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Kostin, M.A.

Paper Title Page
TPAP035 Energy Deposition Issues at 8 GeV H- Beam Collimation and Injection to the Fermilab Main Injector 2372
 
  • A.I. Drozhdin, M.A. Kostin, N.V. Mokhov
    Fermilab, Batavia, Illinois
  
  The energy deposition and radiation issues at 8 GeV H- beam collimation in the beam transfer line and at stripping injection to the Fermilab Main Injector are analyzed. Detailed calculations with the STRUCT and MARS15 codes are performed on heating of collimators, stripping foils and other critical components, as well as on beam line and accelerator element radioactivation both at normal operation and accidental beam loss. Extraction of the unstripped part of the beam to the external beam dump and loss of the excited-state Ho atoms in the Main Injector are also studied.  
RPPP048 Beam Collimation and Machine-Detector Interface at the International Linear Collider 2995
 
  • N.V. Mokhov, A.I. Drozhdin, M.A. Kostin
    Fermilab, Batavia, Illinois
  
  Funding: Work supported by the Universities Research Association, Inc., under contract DE-AC02-76CH03000 with the U.S. Department of Energy.

Synchrotron radiation, spray from the dumps and extraction lines, beam-gas and beam halo interactions with collimators and other components in the ILC beam delivery system create fluxes of muons and other secondaries which can exceed the tolerable levels at a detector by a few orders of magnitude. It is shown that with a multi-stage collimation system, magnetized iron spoilers which fill the tunnel and a set of masks in the detector, one can hopefully meet the design goals. Results of modeling with the STRUCT and MARS15 codes of beam loss and energy deposition effects are presented in this paper. We concentrate on collimation system and mask design and optimization, short- and long-term survivability of the critical components (spoilers, absorbers, magnets, separators, dumps), dynamic heat loads and radiation levels in magnets and other components, machine-related backgrounds and damage in collider detectors, and environmental aspects (prompt dose, ground-water and air activation).

 
FPAE011 8 GeV H- Ions: Transport and Injection 1222
 
  • W. Chou, A.I. Drozhdin, C. Hill, M.A. Kostin, J.-F. Ostiguy, Z. Tang
    Fermilab, Batavia, Illinois
  • H.C. Bryant
    UNM, Albuquerque, New Mexico
  • R.J. Macek
    LANL, Los Alamos, New Mexico
  • G. Rees
    CCLRC/RAL/ASTeC, Chilton, Didcot, Oxon
  • P.S. Yoon
    Rochester University, Rochester, New York
  
  Funding: Work supported by the Universities Research Association, INC. under contract with the U.S. Department of Energy NO. DE-AC02-76CH03000.

Fermilab is working on the design of an 8 GeV superconducting RF H- linac called the Proton Driver. The energy of the H- beam is an order of magnitude higher than any existing H- beams. This brings up a number of new challenges to the transport, stripping and injection into the next machine (the Main Injector), such as blackbody radiation stripping, magnetic field and residual gas stripping, Stark states of hydrogen atoms, foil stripping efficiency, single and multiple Coulomb scattering, energy deposition, foil heating and stress, radiation activation, collimation, jitter correction, etc. This paper will give a summary of these studies.*

*For details the reader is referred to FERMILAB-TM-2285-AD-T.