First Assembled Rod in US First rod in

First Assembled Rod in US • First rod in US fully assembled à Took approximately 2 hours for assembly • Electrical tests have just begun DOE review, January 20, 2003 -Jim Lamb Slide 1

Vacuum Rod Assembly Tools DOE review, January 20, 2003 -Jim Lamb Slide 2

Single Rod Test Stand at UCSB • Complete set of electronic ready to test single rods à à Test box provides dry, dark, and electrical isolated environment Connects to Rod burn-in chiller for cooling • First production rod tested in stand (J. Lamb & P. Gartung) DOE review, January 20, 2003 -Jim Lamb Slide 3

Rod Testing Results • Faults clearly seen in rod using new LT à ARCS Only opens on rod so far • Laser gain differences add complication to data analysis Fixed noise cuts will NOT work due to 50% variation in laser gain à Hopefully laser gain can be measured by header height à • Similar work on optimization of calculation of pulse height & peak time variable needed as in module LT à Rod LT See P. Gartung’s talk • More statistics needed in order to know how best to test rod DOE review, January 20, 2003 -Jim Lamb Slide 4

US Multi-Rod LT Stands Physically four basic components: • Chiller • Rack • Freezer • Cables DOE review, January 20, 2003 -Jim Lamb Slide 5

Multi-Rod Stand: Freezer Control Box RH and T sensors PS -12, +5, +12 Flowmeters Valves control DOE review, January 20, 2003 Proximity detectors -Jim Lamb Slide 6

Multi-Rod stand : Software • PC guides the user on the Rod setup. Button “Prepare to Load Rods. ” à Rods loaded. Prepare to burn in. à – Ready. Start burn in. (Interlock software pops up) à Burn in finished. Drain Rods. – Rods drained. Proceed to disconnected them. • Interlock Logic: • Power interlock Kill LV+HV TROD Hottest Point (Limits) à Flow (each Rod and total) à Chiller status à January Freezer status DOE review, 2003 -Jim Lamb à • Cooling interlock Stop coolant supply à à à Dew point (TFer Coldest Freezer open Dry Air Flow Point ) Slide 7

Multi-Rod stand : Interlocks • Overall Status à à The FNAL stand hardware and software completed. Have cloned most parts for UCSB. – Installation in progress this week DOE review, January 20, 2003 -Jim Lamb Slide 8