Femtosecond Planar Electron Beam Source for Micron-Scale Dielectric Wake Field Accelerator

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-01ER83243
Agency Tracking Number: 65565S01-II
Amount: $0.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
202008 Yale Station, Suite 100, New Haven, CT, 06520
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jay Hirschfield
 (203) 789-2275
Business Contact
 George Trahan
Title: 65565
Phone: (203) 458-1144
Research Institution
65565 This project will modify a laser-driven vacuum accelerator at Brookhaven National Laboratory to produce a train of ~4 fs electron bunches spaced by 35 fs that can be manipulated to have sheet-like transverse profiles. These microbunches can be used to generate intense accelerating fields in dielectric microstructures, and possibly allow the future design of a high energy electron-positron collider that would be much smaller and less expensive than present technology permits. In Phase I, calculations were conducted to allow optimum chopping of a ~1 ps accelerated bunch into a train of about 30 ~4 fs, ~1-pC electron bunches spaced by 35 fs. A configuration of quadrupole magnets was devised to manipulate transverse profiles of the micro-bunches into sheet-like form. Theory and computations were carried out for wake fields and bunch stability when such bunches transverse planar dielectric accelerator structures. Phase II will install (1) a beam stop for chopping a ~1 ps bunch into a train of about 30 ~4 fs, ~1pC bunches spaced by 35 fs; (2) coherent synchrotron radiation diagnostics to infer the bunch lengths; and (3) quadrupole magnets to manipulate the bunches into sheet-like form for injection into a planar dielectric-lined wake field accelerator structure. Theory and computations will be extended to characterize longitudinal and transverse wake fields in such a structure, including the dynamics and stability of bunches. Commercial Applications and Other Benefits as described by the awardee: The micron-scale planar dielectric wake field accelerator module with acceleration gradient in the range of 1 GV/m should allow for the design and construction of a future TeV-range electron-positron collider that would be much smaller than permitted by current concepts. This could create a market for dozens of accelerators and thousands of planar dielectric structures, amounting to several hundred million dollars

* Information listed above is at the time of submission. *

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