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CEBAF Energy Recovery Experiment E02-102 Collaboration

Last updated: July 30, 2003

Introduction

By utilizing four spare MBE dipoles one can build a twin chicane (to introduce half- quarter-wavelength delay) at the end of the South Linac. Furthermore, an extraction dump chicane, to deposit energy recovered beam, needs to be installed, at the end of the South Linac. These two additions will create noninvasively CEBAF with full scale Energy Recovery/Current Doubling capability.

For the first stage of the experiment - The Energy Recovery Experiment - a twin chicane will be configured for half-wavelength delay. It will turn the ordinary CEBAF into a single pass ERL (Energy Recovery Linac). The beam will be accelerated in the North and South Linac, then it will get decelerated in the North and South Linac (one pass up, one pass down, beam extracted at the injection energy, SL dump).

The second stage - The Current Doubling Experiment requires a quarter-wavelength delay chicane (appropriate reconfiguration of the twin chicane) and the same dump; both at the end of the South Linac. The beam will be accelerated in the North and South Linac, then it will drift through the North and South Linac, and it will finally be decelerated in the North and South Linac (one pass up, one pass drift, one pass down, beam extracted at the injection energy, SL dump).

First energy recovered beam
Group photo at MCC, March 26 2003
ER Optics
Contact List
CEBAF-ER Cartoon
ER Control Screen
phase delay chicane - Photo
re-injection chicane - Photo
ER dump - Photo



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new ER photos!

  • - Arc 1 synchrotron light monitor - acc/decel beams (Einj=20 MeV)

  • - Arc 2 synchrotron light monitor - highest energy (1020 MeV) beam (Einj=20 MeV)

  • - 20 MeV energy recovered beam at ER dump (OTR view) (Einj=20 MeV)

  • - typical 2L22 harp scan as quads varied for emittance measurement (Einj=56 MeV)

  • - SL04 beam viewer - two beams at the beginning of South Linac (Einj=20 MeV)