Recent Energy Deposition Simulations TCSM-A6L7 L. Keller LARP Video Mtg. 02 Oct. 2006

Simple FLUKA Cylinder, Shaft, Bearing Model ceramic bearing Molybdenum shaft: R = cm bearing axle Copper cylinder + cooling loops: R = 3.3 – 6.8 CM, Z = 95 CM beam axis

Axial Power Distribution in TCSM-A6L7 Copper Jaw and Molybdenum Shaft Halo on TCPH, 1 hour beam lifetime Ave. = 13.5 kW/jaw Ave. = 530 W/shaft high energy side - photons from TCPH?

Azimthal Power Distribution in TCSM-A6L7 Copper Jaw and Molybdenum Shaft Halo on TCPH, 1 hour beam lifetime FWHM ≈ 20º FWHM ≈ 60º

Azimthal Power Distribution in TCSM-A6L7 Ceramic Bearing and Axle (back end) Halo on TCPH, 1 hour beam lifetime Ave. = 0.77 W Ave. = 2.7 W

Results for TCSM-A6L7 at 7 Sigma Total power deposition Copper jaws Molybdenum shaft Axial Al struts Front Al image-current block Rear Al image-current block Front ceramic bearing Rear ceramic bearing Front steel bearing spindle Rear steel bearing spindle 13,500 W 530 W 70 W 35 W 90 W 0.1 W 0.8 W 0.5 W 2.7 W Halo on TCPH, 1 hour beam lifetime

Accident Energy Deposition in Down-beam Aluminum Image-Current Block Total E dep ≈ 3 kJ ΔT max < 100 °C in the image current block Two accident conditions: 1.All bunches hit the front of the collimator: σ x 2.Grazing angle along collimator edge: at 50 µrad grazing angle and 200µ σ x, only about 15% of the beam hits along the edge Alum. 1 MJ of bunches hitting edge, 7-10  Alum. image current block