The Jefferson Lab AMPlifier (JLAMP) – a 4th Generation Light Source

by Gwyn P. Williams, & the JLAB Team from Jefferson Lab, Newport News, Virginia, USA

Thursday 20 May 2010, 15:00 → 16:30 Europe/Berlin

SemR. FLASH (bldg. 28c)

The United States Department of Energy division of Basic Energy Sciences (DOE-BES) has held many workshops to motivate and define the science necessary to address issues such as energy and the environment. They have also defined new tools needed for this science, and there is much interest in a new generation of brighter light sources, most of them linac based. This is a field pioneered at DESY with machines such as FLASH. Jefferson Lab has a fourth generation light source which has operated in the infrared for 10 years, but which has recently been upgraded to cover the UV region. Beyond this, there is a proposal, called JLAMP, to increase the available photon energy to the soft-X-ray region. Specifically the electron beam energy would be increased from 130 to 600 MeV. JLAMP can run up to 4.7 MHz, so that in principle it could work both as an oscillator and an amplifier. The bunch charge is 200 pC with bunch lengths < 100fs. In this talk we will address the science motivating this new generation of light sources, and show some of the calculations that relate the electric field in the accelerator to that in the laboratory for multiple electrons in the transverse and longitudinal coherent limits. These define JLAMP, and we will then describe the machine in more detail, including a brief description of the experimental facilities. This work supported by the Office of Naval Research, the Joint Technology Office, the Commonwealth of Virginia, the Air Force Research Laboratory, the US Army Night Vision Lab, and by DOE under contract DE-AC05-06OR23177.