Keyword: pick-up
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MOPOB62 SRF Half Wave Resonator Activities at Cornell for the RAON Project cavity, ion, SRF, heavy-ion 211
 
  • M. Ge, F. Furuta, T. Gruber, S.W. Hartman, C. Henderson, M. Liepe, S. Lok, T.I. O'Connell, P.J. Pamel, J. Sears, V. Veshcherevich
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
  • J. Joo, J.-W. Kim, W.K. Kim, J. Lee, I. Shin
    IBS, Daejeon, Republic of Korea
 
  The RAON heavy-ion accelerator requires ninety-eight 162.5MHz Half-Wave-Resonators (HWR) with a geometrical β=0.12. Cornell University will test a prototype HWR as well as develop a frequency tuner for this cavity. In this paper we report on the progress in designing, fabricating, and commissioning of new HWR preparation and testing infrastructure at Cornell. The HWR infrastructure work includes new input and pick-up couplers, a modified vertical test insert with a 162.5MHz RF system, a new High-Pressure-Water-Rinsing (HPR) setup, and a modified chemical etching system.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-MOPOB62  
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TUPOA24 Beam Intensity Monitoring System for the PIP-II Injector Test Accelerator ion, FPGA, interface, linac 330
 
  • N. Liu, J.S. Diamond, N. Eddy, A. Ibrahim, N. Patel, A. Semenov
    Fermilab, Batavia, Illinois, USA
 
  Funding: This work was supported by the U.S. Department of Energy under contract No. DE-AC02-07CH11359.
The PIP-II injector test accelerator is an integrated systems test for the front-end of a proposed CW-compatible, pulsed H superconducting RF linac. This linac is part of Fermilab's Proton Improvement Plan II (PIP-II) upgrade. This injector test accelerator will help minimize the technical risk elements for PIP-II and validate the concept of the front-end. Major goals of the injector accelerator are to test a CW RFQ and H source, a bunch-by-bunch MEBT beam chopper and stable beam acceleration through low-energy superconducting cavities. Operation and characterization of this injector places stringent demands on the types and performance of the accelerator beam diagnostics. This paper discusses the beam intensity monitor systems as well as early commissioning measurements of beam transport through the Medium-Energy Beam Transport (MEBT) beamline.
 
poster icon Poster TUPOA24 [1.039 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-TUPOA24  
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TUPOA29 Beam Position Monitoring System for the PIP-II Injector Test Accelerator ion, electronics, electron, linac 349
 
  • N. Patel, C.I. Briegel, J.S. Diamond, N. Eddy, B.J. Fellenz, J. Fitzgerald, V.E. Scarpine
    Fermilab, Batavia, Illinois, USA
 
  Funding: This work was supported by the U.S. Department of Energy under contract No. DE-AC02-07CH11359.
The Proton Improvement Plan II (PIP-II) injector test accelerator is an integrated systems test for the front-end of a proposed continuous-wave (CW) compatible, pulsed H superconducting RF linac. This linac is part of Fermilab's PIP-II upgrade. This injector test accelerator will help minimize the technical risk elements for PIP-II and validate the concept of the front-end. Major goals of the injector accelerator are to test a CW RFQ and H source, a bunch-by-bunch Medium-Energy Beam Transport (MEBT) beam chopper and stable beam acceleration through low-energy superconducting cavities. Operation and characterization of this injector places stringent demands on the types and performance of the accelerator beam diagnostics. A beam position monitor (BPM) system has been developed for this application and early commissioning measurements have been taken of beam transport through the beamline.
 
poster icon Poster TUPOA29 [0.469 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-TUPOA29  
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TUPOB57 The Role of Adami Information in Beam Cooling ion, kicker, experiment, beam-cooling 619
 
  • V.H. Ranjbar
    BNL, Upton, Long Island, New York, USA
 
  Funding: Work supported by the US Department of Energy under contract number DE-SC0012704
We re-consider stochastic cooling as type of information engine using the Adami definition of information *. We define information as data which can permit the cooling system to predict the individual trajectories better than purely random prediction and then act on that data to modify the trajectories of an ensemble of particles. In this study we track the flow of this type of information through the closed system and consider the limits based on sampling and correction as well as the role of the underlying model.
* Adami C. 2016 ‘‘What is information?'' Phil. Trans. R. Soc. A 374:20150230.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-TUPOB57  
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WEPOA38 Optically Based Diagnostics for Optical Stochastic Cooling ion, kicker, undulator, radiation 779
 
  • M.B. Andorf
    Northern Illinois University, DeKalb, Illinois, USA
  • V.A. Lebedev, P. Piot, J. Ruan
    Fermilab, Batavia, Illinois, USA
 
  An Optical Stochastic Cooling (OSC) experiment with electrons is planned in the Integrable Optics Test Accelerator (IOTA) ring currently in construction at Fermilab. OSC requires timing the arrival of an electron and its radiation generated from the upstream pickup undulator into the downstream kicker undulator to a precision on the order of less than a fs. The interference of the pickup and kicker radiation suggests a way to diagnose the arrival time to the required precision.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-WEPOA38  
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