Keyword: linear-collider
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MOP087 A Laser-Driven Linear Collider: Sample Machine Parameters and Configuration laser, emittance, focusing, collider 262
 
  • E.R. Colby, R.J. England, R.J. Noble
    SLAC, Menlo Park, California, USA
 
  Funding: Work supported by Department of Energy contracts DE-AC03-76SF00515 (SLAC) and DE-FG03-97ER41043-III (LEAP).
We present a design concept for an e+ e- linear collider based on laser-driven dielectric accelerator structures, and discuss technical issues that must be addressed to realize such a concept. With a pulse structure that is quasi-CW, dielectric laser accelerators potentially offer reduced beamstrahlung and pair production, reduced event pileup, and much cleaner environment for high energy physics and. For multi-TeV colliders, these advantages become significant.
 
 
MOP265 The FONT5 Prototype ILC Intra-train Feedback System at ATF2 feedback, kicker, simulation, extraction 600
 
  • P. Burrows, R. Apsimon, D.R. Bett, G.B. Christian, B. Constance, C. Perry, J. Resta-López
    JAI, Oxford, United Kingdom
 
  We present the design and beam test results of a prototype beam-based digital feedback system for the Interaction Point of the International Linear Collider. A custom analogue front-end signal processor, FPGA-based digital signal processing boards, and kicker drive amplifier have been designed, built, deployed and tested with beam in the extraction line of the KEK Accelerator Test Facility (ATF2). The system was used to provide orbit correction in y and y' to the train of bunches extracted from the ATF damping ring. We describe the feedback performance in both single and coupled-loop modes and the optimisation of the loop gains.  
 
TUP256 Affordable, Short Pulse Marx Modulator controls, high-voltage, pick-up, status 1307
 
  • M.K. Kempkes, J.A. Casey, M.P.J. Gaudreau, R.A. Phillips
    Diversified Technologies, Inc., Bedford, Massachusetts, USA
  • J. Casey
    Rockfield Research, Inc. east, Winchester, Massachusetts, USA
 
  Funding: U.S. Department of Energy
Under a U.S. Department of Energy grant, Diversified Technologies, Inc. (DTI) is developing a short pulse, solid-state Marx modulator. The modulator is designed for high efficiency in the 100 kV to 500 kV range, for currents up to 500 A, pulse lengths of 0.2 to 5.0 μs, and risetimes <300 ns. Key objectives of the development effort are modularity and scalablity, combined with low cost, and ease of manufacture. For short-pulse modulators, this Marx topology provides a means to achieve fast risetimes and flattop control that are simply not available with hard switch or transformer-coupled topologies. In this paper, DTI will describe the new design and provide an update on progress.
 
 
THP050 Normal Conducting Radio Frequency X-band Deflecting Cavity Fabrication and Validation cavity, alignment, electron, collider 2211
 
  • R.B. Agustsson, S. Boucher, L. Faillace, P. Frigola, A.Y. Murokh, S. Storms
    RadiaBeam, Santa Monica, USA
  • D. Alesini
    INFN/LNF, Frascati (Roma), Italy
  • V.A. Dolgashev, R.J. England
    SLAC, Menlo Park, California, USA
  • J.B. Rosenzweig
    UCLA, Los Angeles, California, USA
  • V. Yakimenko
    BNL, Upton, Long Island, New York, USA
 
  An X-band Traveling wave Deflector mode cavity (XTD) has been developed at Radiabeam Technologies to perform longitudinal characterization of the sub-picosecond ultra-relativistic electron beams. The device is optimized for the 100 MeV electron beam parameters at the Accelerator Test Facility (ATF) at Brookhaven National Laboratory, and is scalable to higher energies. The XTD is designed to operate at 11.424 GHz, and features short filling time, femtosecond resolution, and a small footprint. RF design, fabrication and RF validation and tuning will be presented.  
 
THP078 Study of a TeV Level Linear Collider Using Short rf Pulse (~20ns) Two Beam Accelerator Concept collider, linac, wakefield, klystron 2279
 
  • C.-J. Jing, S.P. Antipov, A. Kanareykin, P. Schoessow
    Euclid TechLabs, LLC, Solon, Ohio, USA
  • M.E. Conde, W. Gai, J.G. Power
    ANL, Argonne, USA
 
  Funding: Work is supported by DOE SBIR grant under contract No. DE-SC0004320.
In a general sense, a high gradient is desirable for a TeV level linear collider design because it can reduce the total linac length. More importantly, the efficiency and the cost to sustain such a gradient should be considered as well in the optimization process of an overall design. We propose a high energy linear collider based on a short rf pulse (~22ns flat top), high gradient (~267MV/m loaded gradient), high frequency (26GHz) dielectric two beam accelerator scheme. This scheme is a modular design and its unique locally repetitive drive beam structure allows a flexible configuration to meet different needs. Major parameters of a conceptual 3-TeV linear collider are presented. This preliminary study shows an efficient (~7% overall ) short pulse collider may be achievable. As the first step, a dielectric based broadband accelerating structure is under development.
 
 
THP109 Dielectric Collimators for Linear Collider Beam Delivery System wakefield, collimation, impedance, collider 2330
 
  • A. Kanareykin, P. Schoessow
    Euclid TechLabs, LLC, Solon, Ohio, USA
  • S. Baturin
    LETI, Saint-Petersburg, Russia
  • R. Tomás
    CERN, Geneva, Switzerland
 
  Funding: US Department of Energy
The current status of ILC and CLIC concepts require additional research on wakefield reduction in the collimator sections. New materials and new geometries have been considered recently*. Dielectric collimators for the CLIC Beam Delivery System have been discussed with a view to minimize the BDS collimation wakefields**. Dielectric collimator concepts for the linear collider are presented in this paper; cylindrical and planar collimators for the CLIC parameters have been considered, and simulations to minimize the beam impedance have been performed. The prototype collimator system is planned to be fabricated and experimentally tested at Facilities for Accelerator Science and Experimental Test Beams (FACET) at SLAC.
*J.R.Lopez. ILC-CLIC Beam Dynamics Workshop. CERN, Geneva, 23-25 June, 2009.
**R. Tomas. ILC-CLIC Beam Dynamics Workshop. CERN, Geneva, 23-25 June, 2009.