Space-Charge Compensation Using Electron Columns at IOTA

Conference · Sun Jul 01 04:00:00 EDT 2018

DOI:https://doi.org/10.18429/JACoW-HB2018-WEA2WA04· OSTI ID:1472107

Freemire, Ben ^[1]; Chattopadhyay, Swapan ^[2]; Chung, Moses ^[3]; Park, Chong Shik ^[4]; Penn, Gregory ^[5]; Shiltsev, Vladimir ^[4]; Stancari, Giulio ^[4]

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1. Northern Illinois U.
2. NICADD, DeKalb
3. UNIST, Ulsan
4. Fermilab
5. LBNL, Berkeley

Beam loss due to space charge is a major problem at current and future high intensity particle accelerators. The space charge force can be compensated for proton or ion beams by creating a column of electrons with a charge distribution matched to that of the beam, maintaining electron-proton stability. The column is created by the beam ionizing short sections of high pressure gas. The ionization electrons are then shaped appropriately using electric and magnetic fields. The Integrable Optics Test Accelerator (IOTA) at Fermilab is a test bed for beam loss and instability mitigation techniques. Simulations using the particle-in-cell code, Warp, have been made to track the evolution of both the electron column and the beam over multiple passes. A 2.5 MeV proton beamline is under construction at IOTA, to be used to study the effect of the electron column on a space charge dominated beam.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1472107
• Report Number(s): FERMILAB-CONF-18-314-AD-APC; 1689668
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS