Intense Pulsed Neutron Source (IPNS) was a scientific user facility at

Argonne National Laboratory Argonne National Laboratory is a science and engineering research United States Department of Energy National Labs, national laboratory operated by University of Chicago, UChicago Argonne LLC for the United States Department of Energy. The facil ...

for neutron scattering research. The IPNS was the world's first pulsed neutron source open to external users and started operations in 1981. The facility ceased operation in January, 2008 after the

omnibus spending bill An omnibus spending bill is a type of bill in the United States that packages many of the smaller ordinary appropriations bills into one larger single bill that can be passed with only one vote in each house. There are twelve different ordinary ap ...

forced Basic Energy Sciences (BES) to cease IPNS operations.

References

Argonne National Laboratory Neutron facilities {{CMP-stub