Author: Scarpine, V.E.
Paper Title Page
TUPP25 Beam Profile Measurements Utilizing an Amplitude Modulated Pulsed Fiber Laser at PIP2IT 268
 
  • V.E. Scarpine, R. Campos, N. Eddy, B.J. Fellenz, T.W. Hamerla, J. Ruan, R.M. Thurman-Keup
    Fermilab, Batavia, Illinois, USA
  • M. El Baz
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
 
  Funding: This work was supported by the U.S. Department of Energy under contract No. DE-AC02-07CH11359
Fermilab is undertaking the development of a new 800 MeV superconducting RF linac to replace its present normal conducting 400 MeV linac. The PIP-II linac consists of a warm front-end generating 2 mA of 2.1 MeV H followed immediately by a series of superconducting RF cryomodules to 800 MeV. To limit the potential damage to the superconducting RF cavities, PIP-II will utilize laser-based monitors to obtain beam profiles via photoionization. This paper will present the results of transverse and longitudinal beam profile measurements using a prototype profile monitor that was tested with 2.1 MeV H beam at the PIP-II Injector Test (PIP2IT) accelerator. This prototype profile monitor utilizes a high repetition rate fiber laser and fiber optic transport into the PIP2IT enclosure. In addition, results will be shown of narrow-band electron detection from amplitude modulated laser pulses.
 
poster icon Poster TUPP25 [0.593 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-TUPP25  
About • paper received ※ 09 September 2021       paper accepted ※ 17 September 2021       issue date ※ 05 October 2021  
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TUPP40 Bunch Extinction Measurements at PIP-II Injector Test Facility 309
 
  • M. El Baz
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
  • B.J. Fellenz, V.E. Scarpine, A.V. Shemyakin, R.M. Thurman-Keup
    Fermilab, Batavia, Illinois, USA
 
  Funding: This work was supported by the U.S. Department of Energy under contract No. DE-AC02-07CH11359
The PIP2 particle accelerator is a new upgrade to the Fermilab accelerator complex, featuring an 800-MeV H-superconducting linear accelerator that will inject the beam into the present Fermilab Booster. A test accelerator known as PIP-II Injector Test (PIP2IT) has been built to validate the concept of the front-end of such a machine. One of the paramount challenges of PIP2IT was to validate the bunch by bunch chopping system in the Medium Energy Beam Transport (MEBT). This paper aims to present the direct extinction measurements at PIP2IT and their analysis. These measurements have been taken by two Resistive Wall Current Monitors (RWCM) and recorded by a high bandwidth oscilloscope.
 
poster icon Poster TUPP40 [0.603 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-TUPP40  
About • paper received ※ 07 September 2021       paper accepted ※ 28 September 2021       issue date ※ 09 October 2021  
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WEPP16 Comparison of Feschenko BSM and Fast Faraday Cup with Low Energy Ion Beams 407
 
  • R. Singh, W.A. Barth, P. Forck, S. Lauber, M. Miski-Oglu, T. Reichert, T. Sieber
    GSI, Darmstadt, Germany
  • V.E. Scarpine, D. Sun
    Fermilab, Batavia, Illinois, USA
 
  A comparison between Fast Faraday Cup and Feschenko longitudinal bunch shape detectors was recently performed at HELIAC Advanced Demonstrator beamline at GSI. Feschenko bunch shape monitor (BSM) uses the time to space conversion by means of secondary electrons emitted from a wire correlated to a rf deflector, while the fast Faraday cup (FFC) measures the deposited charge in a cup geometry matched to 50 Ohm. The FFC design aims to minimize the bunch shape dilution due to field polarization and secondary electrons produced on irradiation. An He1+ with 100 µA average current and 1.4 MeV/u kinetic energy is utilized for this comparison. A buncher upstream of the detectors was operated to focus the beam longitudinally. The results are discussed in this contribution.  
poster icon Poster WEPP16 [1.533 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-WEPP16  
About • paper received ※ 08 September 2021       paper accepted ※ 27 September 2021       issue date ※ 12 October 2021  
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