NAPAC2019 - List of Authors (Gessner, S.J.)

Paper	Title	Page
MOPLH23	An Analysis of Potential Compact Positron Beam Source	220
	R.M. Hessami UCLA, Los Angeles, USA S.J. Gessner CERN, Geneva, Switzerland
	For positron studies in plasma wakefield accelerators such as AWAKE, the development of new, cheaper, and compact positron beam sources is necessary. Using an electrostatic trap with parameters similar to other experiments, this paper explores converting that trapped positron plasma into a usable beam. Bunching is initially accomplished by an electrostatic buncher and the beam is accelerated to 148 keV by pulsed electrostatic accelerators. This is necessary for injection into the beta-matched rf cavities operating at 600 MHz, which bring the positron beam to a transverse emittance of 1.3 pi mrad mm, a longitudinal emittance of 93.3 pi keV mm, stdz of 1.85 mm and an energy of 22 MeV. The beamline used here is far simpler and less expensive than those at many facilities, such as SLAC, allowing for a cheap source of positron beams, potentially opening up positron beam studies to many facilities that could not previously afford such a source.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-MOPLH23
About •	paper received ※ 28 August 2019 paper accepted ※ 03 September 2019 issue date ※ 08 October 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEYBA1	AWAKE, Proton Bunch Self-Modulation and Electron Acceleration
	S.J. Gessner CERN, Geneva, Switzerland
	AWAKE has demonstrated the controlled self-modulation of a high energy proton bunch. Basic beam plasma interaction physics was observed and characterized. This led to the driving of large amplitude wakefields suitable for external electron injection and acceleration. Electrons were accelerated to 2GeV. The concept and the experiment will be introduced. Detailed experimental results will be presented. Possible future experiments and applications will be outlined.
	Slides WEYBA1 [32.276 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

An Analysis of Potential Compact Positron Beam Source

220

R.M. Hessami
UCLA, Los Angeles, USA
S.J. Gessner
CERN, Geneva, Switzerland

For positron studies in plasma wakefield accelerators such as AWAKE, the development of new, cheaper, and compact positron beam sources is necessary. Using an electrostatic trap with parameters similar to other experiments, this paper explores converting that trapped positron plasma into a usable beam. Bunching is initially accomplished by an electrostatic buncher and the beam is accelerated to 148 keV by pulsed electrostatic accelerators. This is necessary for injection into the beta-matched rf cavities operating at 600 MHz, which bring the positron beam to a transverse emittance of 1.3 pi mrad mm, a longitudinal emittance of 93.3 pi keV mm, stdz of 1.85 mm and an energy of 22 MeV. The beamline used here is far simpler and less expensive than those at many facilities, such as SLAC, allowing for a cheap source of positron beams, potentially opening up positron beam studies to many facilities that could not previously afford such a source.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-MOPLH23

About •

paper received ※ 28 August 2019 paper accepted ※ 03 September 2019 issue date ※ 08 October 2019

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEYBA1

AWAKE, Proton Bunch Self-Modulation and Electron Acceleration

S.J. Gessner
CERN, Geneva, Switzerland

AWAKE has demonstrated the controlled self-modulation of a high energy proton bunch. Basic beam plasma interaction physics was observed and characterized. This led to the driving of large amplitude wakefields suitable for external electron injection and acceleration. Electrons were accelerated to 2GeV. The concept and the experiment will be introduced. Detailed experimental results will be presented. Possible future experiments and applications will be outlined.

Slides WEYBA1 [32.276 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)