Keyword: MEBT
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MOP03 Longitudinal Emittance Measurements at PIP2IT cavity, emittance, cryomodule, simulation 27
 
  • M. El Baz
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
  • J.-P. Carneiro, B.M. Hanna
    Fermilab, Batavia, Illinois, USA
 
  The PIP-II 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 PIP-II. One of the paramount challenges of PIP2IT was to demonstrate a low longitudinal emittance at the end of the front end. Having a low longitudinal emittance is crucial in order to ensure the stability of the beam in the accelerator. We present a longitudinal emittance calculation at 14.3 MeV at the SSR1-8 cavity in the High Energy Transport line (HEBT). The signal is collected by a Fast Faraday Cup (FFC) at the end of HEBT and recorded by a high-bandwidth oscilloscope.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2021-MOP03  
About • Received ※ 02 November 2021 — Revised ※ 05 November 2021 — Accepted ※ 03 February 2022 — Issue date ※ 04 February 2022
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MOP05 Reduction of the Beam Jitter at the PIP2IT Test Accelerator LEBT, ion-source, ECR, high-voltage 35
 
  • A.V. Shemyakin, G.W. Saewert, A. Saini
    Fermilab, Batavia, Illinois, USA
 
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
Analysis of the beam position monitor (BPM) signals at the H test linear accelerator PIP2IT showed that a large portion of the signals scatter comes from the beam jitter. BPM position measurements of the jitter modes were compared with beam motion responses to perturbations excited by driving various beamline parameters in a low frequency sinusoidal manner. The main contributor to the jitter was found to be a low frequency noise in the input reference to the ion source high voltage (HV) power supply. Filtering the HV power supply reference signal decreased the rms scatter in BPM readings by a factor of 2-3.
 
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slides icon Slides MOP05 [0.852 MB]  
poster icon Poster MOP05 [0.852 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2021-MOP05  
About • Received ※ 30 September 2021 — Revised ※ 19 October 2021 — Accepted ※ 04 March 2022 — Issue date ※ 11 April 2022
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