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Nagaitsev, S.

Paper Title Page
WEPMS082 PVC - An ILC RF Cryomodule Software Simulator 2523
 
  • J. K. Keung
  • N. Lockyer
    TRIUMF, Vancouver
  • S. Nagaitsev
    Fermilab, Batavia, Illinois
  • F. M. Newcomer
    University of Pennsylvania, Philadelphia, Pennsylvania
  
  The Penn Virtual Cavity (PVC) simulator is a object oriented RF Cavity simulator with a user friendly Linux GUI, as well as a web interface. It is a tool to help understand the effects of each component in the RF system. It can simulate an International Linear Collider (ILC) cryomodule consisting of eight 9-cell cavities, together with its associated high voltage modulator, a klystron, and RF power distribution system. The uses range from experts designing LLRF control algorithms, to beginners learning about the general RF characteristics of the SRF cavities. PVC explores effects such as Lorentz Detuning, beam loading (with bunch to bunch fluctuations), 8/9pi modes, I/Q feedback and feedforward, cavity Q-drop, amplitude and phase jitter and ripples, as well as calibration errors. The current status of the PVC and the conclusions derived from the simulations will be reported, along with comparisons to the DESY-TTF cryomodules.

http://einstein.hep.upenn.edu/~keungj/simulation.html

 
THPMN098 Modeling and Design of the ILC Test Area Beam Absorbers at Fermilab 2939
 
  • M. Church
  • A. Z. Chen, N. V. Mokhov, S. Nagaitsev, N. Nakao
    Fermilab, Batavia, Illinois
  
  Detailed MARS15 simulations have been performed on energy deposition and shielding of the proposed ILC Test Area absorbers to deal with up to 50 kW of 800 MeV electron beam power and provide unlimited occupancy conditions in the hall. ANSYS analysis based on the calculated energy deposition maps confirms robustness of the proposed design of the absorbers and beam windows for normal operation and for various failure modes. A non-trivial shielding solution was found for the entire region housing the main and single-bunch absorbers.  
THPMN099 Plans for a 750 MeV Electron Beam Test Facility at Fermilab 2942
 
  • M. Church
  • S. Nagaitsev, P. Piot
    Fermilab, Batavia, Illinois
  
  A 750 MeV electron beam test facility at Fermilab is in the planning and early construction phase. An existing building is being converted for this facility. The photoinjector currently in use at the Fermilab NICADD Photoinjector Laboratory (FNPL) will be moved to the new facility and upgraded to serve as an injector for a beam acceleration section consisting of 3 Tesla or ILC-type cryomodules. A low energy off-axis beam will be constructed to test ILC crab cavity designs and provide opportunities for other tests. Downstream beamlines will consist of a diagnostic section, a beam test area for additional beam experiments, and a high power beam dump. The initial program for this facility will concentrate on testing ILC-type cryomodules and RF control with full ILC beam intensity. A future building expansion will open up further possibiliities for beam physics and beam technology experiments.  
WEOCKI03 Status of the R&D Towards Electron Cooling of RHIC 1938
 
  • I. Ben-Zvi
  • D. T. Abell, G. I. Bell, D. L. Bruhwiler, R. Busby, J. R. Cary, D. A. Dimitrov, P. Messmer, V. H. Ranjbar, D. S. Smithe, A. V. Sobol, P. Stoltz
    Tech-X, Boulder, Colorado
  • J. Alduino, D. S. Barton, D. Beavis, M. Blaskiewicz, J. M. Brennan, A. Burrill, R. Calaga, P. Cameron, X. Chang, K. A. Drees, A. V. Fedotov, W. Fischer, G. Ganetis, D. M. Gassner, J. G. Grimes, H. Hahn, L. R. Hammons, A. Hershcovitch, H.-C. Hseuh, D. Kayran, J. Kewisch, R. F. Lambiase, D. L. Lederle, V. Litvinenko, C. Longo, W. W. MacKay, G. J. Mahler, G. T. McIntyre, W. Meng, B. Oerter, C. Pai, G. Parzen, D. Pate, D. Phillips, S. R. Plate, E. Pozdeyev, T. Rao, J. Reich, T. Roser, A. G. Ruggiero, T. Russo, C. Schultheiss, Z. Segalov, J. Smedley, K. Smith, T. Tallerico, S. Tepikian, R. Than, R. J. Todd, D. Trbojevic, J. E. Tuozzolo, P. Wanderer, G. Wang, D. Weiss, Q. Wu, K. Yip, A. Zaltsman
    BNL, Upton, Long Island, New York
  • A. V. Aleksandrov, D. L. Douglas, Y. W. Kang
    ORNL, Oak Ridge, Tennessee
  • H. Bluem, M. D. Cole, A. J. Favale, D. Holmes, J. Rathke, T. Schultheiss, J. J. Sredniawski, A. M.M. Todd
    AES, Princeton, New Jersey
  • A. V. Burov, S. Nagaitsev, L. R. Prost
    Fermilab, Batavia, Illinois
  • Y. S. Derbenev, P. Kneisel, J. Mammosser, H. L. Phillips, J. P. Preble, C. E. Reece, R. A. Rimmer, J. Saunders, M. Stirbet, H. Wang
    Jefferson Lab, Newport News, Virginia
  • V. V. Parkhomchuk, V. B. Reva
    BINP SB RAS, Novosibirsk
  • A. O. Sidorin, A. V. Smirnov
    JINR, Dubna, Moscow Region
  
  Funding: Work done under the auspices of the US DOE with support from the US DOD.

The physics interest in a luminosity upgrade of RHIC requires the development of a cooling-frontier facility. Detailed cooling calculations have been made to determine the efficacy of electron cooling of the stored RHIC beams. This has been followed by beam dynamics simulations to establish the feasibility of creating the necessary electron beam. Electron cooling of RHIC at collisions requires electron beam energy up to about 54 MeV at an average current of between 50 to 100 mA and a particularly bright electron beam. The accelerator chosen to generate this electron beam is a superconducting Energy Recovery Linac (ERL) with a superconducting RF gun with a laser-photocathode. An intensive experimental R&D program engages the various elements of the accelerator: Photocathodes of novel design, superconducting RF electron gun of a particularly high current and low emittance, a very high-current ERL cavity and a demonstration ERL using these components.

 
slides icon Slides  
FRPMN062 OTR Interferometry Diagnostic for the A0 Photoinjector 4144
 
  • G. M. Kazakevich
  • H. Edwards, R. P. Fliller, V. A. Lebedev, S. Nagaitsev, R. Thurman-Keup
    Fermilab, Batavia, Illinois
  
  Funding: Operated by Universities Research Association, Inc. for the U. S. Department of Energy under contract DE-AC02-76CH03000.

OTR interferometry (OTRI) is an attractive diagnostic for investigation of relativistic electron beam parameters. The diagnostic is currently under development at the A0 Photoinjector. This diagnostic is applicable for NML accelerator test facility that will be built at Fermilab. The experimental setups of the OTR interferometers for the Photoinjector prototype are described in the report. Results of simulations and measurements are presented and discussed.