4/2/2007 SLAC 8am Meeting 1

T-489: Induced Activity and Residual Dose Rates

M. Brugger, S. Mallows, S. Roesler, H. Vincke, J. Vollaire (CERN RP)

J. Bauer, H. Brogonia, M. Kerimbaev, J. Liu, S. Rokni, T. Sanami, H. Tran (SLAC RP)

V. Bharadwaj, J. Sheppard, (SLAC ILC)

Motivation:• Simulation of residual activity improved in last years

• Better-controlled experiments needed for benchmark tests

• Will allow more accurate predictions for LCLS, ILC, etc.

• Similar to experiment at CERN with hadron beams

4/2/2007 SLAC 8am Meeting 2

Experimental Setup

• 28.5 GeV beams, 20W onto copper target inside ESA

• Samples close-by, remove samples one by one

• Measure dose rate and activity in Building 24

4/2/2007 SLAC 8am Meeting 3

4/2/2007 SLAC 8am Meeting 4

ScheduleYesterday:• I28 charge & rate limit set up by Bob Simmons• Alignment checked: Fine, nice correspondence with

3PR2• Mike Woods worked with Howard to set up feedback Today: Test samples• Copper at side and downstream

estimation of irradiation times• Getting additional DAQ in ESA• Will add “real” samples: Cu, Al, Fe, Ti, TiAlloy, StSteel,

soil, water, concrete

Later:• Irradiating samples for either a few hours or a few days• Scheduled to run until next Monday morning

4/2/2007 SLAC 8am Meeting 5

Beam on Dump