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

Andrew Church, left, and Saad Elorfi, right, of the Sample Environment
Group change out a sample for ARCS.
been commissioned by the SNAP team. These include
large-volume Paris-Edinburgh (P-E) presses, panoramic
high-pressure cells with gem-anvils, a cryocooling
system capable of cooling the massive P-E
press, a graphite furnace heating system for the P-E
press, and a laser heating system for the gem-anvil
pressure cells.
The scope of the sample environment program is
not limited to temperature, pressure, and magnetism
however. Other developments include controlled
gas atmosphere chambers, humidity cells, optical
excitation probes, automatic sample changers and
manipulators, and a variety of special sample cells.
In addition, some users have exercised the option to
supply their own specialized sample environments.
Those experiments have gone smoothly thanks to the
advance notification spelled out in the proposals and
the subsequent interaction between the researchers
and ORNL staff.
For the future, we aim to improve the standard
equipment pool to achieve greater reliability and
accuracy. We also hope to broaden our capabilities
for extreme environments, such as 40-Tesla pulsed
magnetic fields, containerless levitators operating
at up to 3000°Celsius, and special environments to
study disordered, surface, and reduced dimensional
systems.
Our user community has been engaged in many of
these development projects, resulting in a broad
range of capability and in getting this young program
off the ground. We look forward
to another productive year of
serving and collaborating with
the user community.
A list of sample environment
resources for each facility is
available in the Facts and Figures
section.
Contact: Lou Santodonato
(santodonatol@ornl.gov)
HFIR: neutrons.ornl.gov/hfir_instrument_systems/hfir_sample.
shtml
SNS: neutrons.ornl.gov/instrument_systems/sample/
FACILITY DEVELOPMENT 2008 ANNUAL REPORT
ORNL NEUTRON SCIENCES The Next Generation of Materials Research
61
FACILITY DEVELOPMENT