NDLI: Energy doubling of 42GeV electrons in a particle-driven, plasma-based accelerator

Content Provider	IEEE Xplore Digital Library
Author	Muggli, P. Katsouleas, T. Oz, E. Barnes, C.D. Blumenfeld, I. Decker, F.J. Hogan, M.J. Ischebeck, R. Iverson, R.H. Kirby, N. Krejcik, P. O'Connell, C. Siemann, R.H. Walz, D. Clayton, C.E. Huang, C. Johnson, D.K. Joshi, C. Lu, W. Marsh, K.A. Mori, W.B. Zhou, M.
Copyright Year	2008
Description	Author affiliation: Univ. of Southern California, Los Angeles, CA (Muggli, P.; Katsouleas, T.; Oz, E.)
Abstract	Summary form only given. Plasma-based accelerators have made remarkable progress in the last few years. In particular, the energy doubling of 42GeV incoming electrons has been demonstrated over a plasma length of only 85cm in a particle beam-driven plasma-based accelerator or plasma wakefield accelerator (PWFA). This distance is about 2000 times shorter than the conventional linear accelerator that produced these particles. In the plasma the accelerating gradient is ap 50GeV/m, suggesting that energies of the order of ITeV could be reached in only ap 20 m of plasma. In the experiment the energy gain scales linearly with the plasma length. The maximum energy gain is obtained at a plasma density such that the plasma wavelength is approximately equal to the electron bunch. This scaling is verified for long (ap 700 mum) and short (ap 20 mum) bunches with corresponding optimum plasma densities of ap1.8 x $10^{14}cm^{-3}$ and ap2.7 x $10^{17}cm^{-3}.$ In the short bunch experiments, the plasma is produced through field ionization of a lithium vapor confined to the hot region heat- pipe oven by a helium buffer gas at room temperature. Above a wake field amplitude of ap 30 GV/m, trapping of plasma electrons is observed. The trapping was identified as resulting from the field-ionization ionization of neutral helium in the lithium to helium transition regions of the heat-pipe oven. These free electrons born at rest inside the wake and have a much lower trapping threshold that the lithium electrons born ahead of the wake. Spectral interference measurements show that the trapped electrons form one or more short bunches (a few fs). Simulations suggest that they have a peak current larger and an emittance lower that those of the drive bunch, possibly making them interesting for radiation source applications. Experimental results will be presented and compared to scaling laws. The prospects for the application of plasma-based accelerators to a future linear particle collider will be discussed.
Starting Page	1
Ending Page	1
File Size	41512
Page Count	1
File Format	PDF
ISBN	9781424419296
ISSN	07309244
DOI	10.1109/PLASMA.2008.4590981
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-15
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasmas Lithium Charge carrier processes USA Councils Helium Ionization Heating
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in