Space Charge Compensation Using Electron Columns and Electron Lenses at IOTA

Conference · Thu Nov 10 04:00:00 EST 2016

OSTI ID:1334777

Park, Chong Shik ^[1]; Shiltsev, Vladimir ^[1]; Stancari, Giulio ^[1]; Thangaraj, Jayakar Tobin ^[1]; Milana, Diletta ^[2]

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1. Fermilab
2. Milan Polytechnic

The ability to transport a high current proton beam in a ring is ultimately limited by space charge effects. Two novel ways to overcome this limit in a proton ring are by adding low energy, externally matched electron beams (electron lens, e-lens), and by taking advantage of residual gas ionization induced neutralization to create an electron column (e-column). Theory predicts that an appropriately confined electrons can completely compensate the space charge through neutralization, both transversely and longitudinally. In this report, we will discuss the current status of the Fermilab’s e-lens experiment for the space charge compensation. In addition, we will show how the IOTA e-column compensates space charge with theWARP simulations. The dynamics of proton beams inside of the e-column is understood by changing the magnetic field of a solenoid, the voltage on the electrodes, and the vacuum pressure, and by looking for electron accumulation, as well as by considering various beam dynamics in the IOTA ring.

• 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: 1334777
• Report Number(s): FERMILAB-CONF-16-525-APC-CD; 1501604
• Country of Publication: United States
• Language: English

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