transcript for workshop #2 is available in PDF format
Agenda and viewgraphs of talks
given at Workshop I are being posted at:
and at BNL mirror site at http://nslsweb.nsls.bnl.gov/nsls/org/PERL/.
For instructions on signing up for the following workshops (workshop I and
workshop II) please
go to the conference registration page.
Attention: The schedule for workshop II is now available as a PDF
Energy Recovery Linac
Sources of Synchrotron Radiation
Date: Tuesday August 21, 2001 (All
Location: The Pyle Center on the
University of Wisconsin Madison Campus
Registration Fee: $50.00 (Includes
lunch, breaks, and any materials.)
Organizers: Don Bilderback (CHESS), Sol Gruner (CHESS),
Kao (BNL), Gwyn Williams (TJNAF)
Schedule: As of 7/9/01
The next generation of
synchrotron radiation sources are being built on linear accelerators
rather than storage rings. The high brightness is achieved thanks to
laser-photocathode RF guns (Photoinjectors), enabling SASE FELs machines (LCLS
at SLAC, LEUTL at APS, and TESLA at DESY) to reach X-ray wavelengths.
These have been called 4th generation machines. In a complementary
approach, other groups including ones at Brookhaven National Laboratory,
Cornell University and Jefferson Lab, are also considering hard
synchrotron radiation opportunities from photoinjected energy recovery
linacs, operating at 3 to 10 GeV with ultra-high brilliance undulators.
These machines are scaled up from the high-power Infrared Radiation (IR)
FEL at Jefferson Laboratory, which operates as a one-pass light-source
with energy recovery.
The advantages are
numerous: horizontal emittance of order 100x less than current 3rd
generation storage rings leading to the possibility of a diffraction
limited hard x-ray source, fs pulses for stroboscopic x-ray experiments
with GHz repetition rate, few micron electron source diameter in short
length undulators for superior microfocusing applications, continuous
injection so there is infinite SR beam lifetime, etc.
Since the technology to
make such a machine may be of interest to many in the community and not
many of us are familiar with the design principles of such sources and the
special experimental opportunities afforded by such machines, we are
organizing presentations by both machine physicists and synchrotron
radiation experts to inform us of the potential opportunities.
SRI 2001 Workshop 2
User Requirements for Beam
Friday, August 24, 2001 (Afternoon)
The Pyle Center on the University of Wisconsin Madison Campus
No fee for this workshop
Joe Bisognano (SRC), Mike Green (SRC)
file (as of 8-17-2001)
At synchrotron radiation facilities today,
beams of smaller spatial dimensions and divergences and shorter temporal
duration are being routinely delivered. Heightened beam stability allows
users to take full advantage of these achievements, and there is a clear
need for researchers to communicate clearly to their facility partners
their science-based requirements for source stability. The principal
mission of this "Users' Requirements for Beam Stability
Workshop" is to give an opportunity to users to define quantitatively
those stability specifications that would significantly expand the
scientific reach of experiments at synchrotron light sources.
The first half of the workshop will be
devoted to short (15 minute) presentations from the research community on
source stability requirements. Issues would include intensity variations,
steering accuracy, photon energy resolution, electron trajectories in
insertion devices, relevant time scales, experimental phase space
acceptance, and the underlying scientific goals. The translation of source
requirements into electron beam and optical instrumentation parameters
could also be discussed. The second half of the workshop will be an open
discussion with the goal of generating a concrete list of high priority
tasks in beam stabilization.
Participants are encouraged to volunteer to
give 15 minute presentations on their views of high priority, high
leverage stability upgrades that would be attractive to their research
programs. Presentations on the overall beam stability goals of the various
synchrotron radiation facilities are also invited. Please forward a brief
abstract to Joe Bisognano at firstname.lastname@example.org by June 1.
Please let Joe Bisognano know
as soon as possible if you are planning to attend this workshop (whether
or not you plan to submit an abstract). This will help us plan for
space and materials. Thanks.
Page updated 7-18-2001