Neutron Sciences 2008 Annual Report - 17.79 MB - Spallation ...

A reference design concept for
the second target station has been
developed, and DOE has authorized
SNS to proceed to a full conceptual
design.
In the reference design, every third
pulse from the accelerator will
go to the second target station so
that it operates at 20 pulses per
second; the first target station will
receive 40 pulses per second. The
second target station would accept
1-millisecond-long proton pulses directly
from the linac, increasing the
power available. In this mode the
facility could deliver 1.4 megawatts
to the first target station and
1 megawatt to the second. The
second target station will be optimized
to provide the maximum
flux of cold neutrons. Studies show
that with this reference concept,
the second station and associated
instrumentation would improve
performance by more than an order
of magnitude for broad areas of
forefront science and could open
totally new areas to exploration.
Contact: Kent Crawford (crawfordrk@ornl.gov)
neutrons.ornl.gov/facilities/proposed_upgrades.shtml
Second Cold Source and Neutron Science Center
at HFIR
As part of DOE’s Facilities for the Future: A Twenty-
Year Outlook Plan, HFIR is pursuing a second cold
source and guide hall to support nine cold neutron
guides with higher brightness than existing guides.
In addition, to provide more permanent space and to
satisfy future needs, layout and planning have started
for the HFIR Neutron Science Center. This center
would provide office and lab space and other user
support facilities. Decisions to proceed with either
or both of these projects are expected about 2012.
FACILITY DEVELOPMENT 2008 ANNUAL REPORT
SNS site on Chestnut Ridge.
On the right is the projected location
of the second target station.
ORNL NEUTRON SCIENCES The Next Generation of Materials Research
69
FACILITY DEVELOPMENT