Here are links for this weeks discussion (sorry that they are a day late). NXdisk_chopper http://www.neutron.anl.gov.:8080/NeXus/45 NXfermi_chopper http://www.neutron.anl.gov.:8080/NeXus/53 NXvelocity_selector http://www.neutron.anl.gov.:8080/NeXus/54 Peter Peterson Executive Secretary, NIAC