A SIMPLE METHOD FOR MEASURING THE ELECTRON-BEAM MAGNETIZATION

Conference · Tue Oct 18 00:00:00 EDT 2016

OSTI ID:1331114

Halavanau, A.  ^[1]; Qiang, G. ^[2]; Wisniewski, E. ^[3]; Ha, G. ^[4]; Power, J. ^[3]; Piot, P. ^[1]

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1. Fermilab
2. Tsinghua U., Beijing, Dept. Eng. Phys.
3. Argonne
4. POSTECH, Pohang

There are a number of projects that require magnetized beams, such as electron cooling or aiding in “flat” beam transforms. Here we explore a simple technique to characterize the magnetization, observed through the angular momentum of magnetized beams. These beams are produced through photoemission. The generating drive laser first passes through microlens arrays (fly-eye light condensers) to form a transversely modulated pulse incident on the photocathode surface [1]. The resulting charge distribution is then accelerated from the photocathode. We explore the evolution of the pattern via the relative shearing of the beamlets, providing information about the angular momentum. This method is illustrated through numerical simulations and preliminary measurements carried out at the Argonne Wakefield Accelerator (AWA) facility are presented.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: FAST
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1331114
• Report Number(s): FERMILAB-CONF-16-460-APC; 1494011
• Resource Relation: Conference: 2nd North American Particle Accelerator Conference, Chicago, Illinois, USA, 10/09-10/14/2016
• Country of Publication: United States
• Language: English

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