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

Argonne National Laboratory

Argonne National Laboratory is the first science and engineering research national laboratory in the United States, receiving this designation on July 1, 1946. It is the largest national laboratory by size and scope in the Midwest...

 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 bill

Omnibus bill

An omnibus bill is a proposed law that covers a number of diverse or unrelated topics. Omnibus is derived from Latin and means "for everything"...

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