Robin-SLAC-invited-talk

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Carbon vs ProtonCarbon has two properties resulting in several desirableconsequences for many patientsCarbon Properties !! ! !!• Sharper knife!(Sharper Penumbra)!!• Higher rate of energydeposited versus depth!(High Linear EnergyTransfer)!Consequences !!• Less dose to healthy tissue!• More effective against tumorsresistant to X-rays and protonradiation (hypoxic tumor cells)!• Shorter overall treatment course!There is a growing interest in carbon therapy worldwide (and in the Bay Area)
Challenge• Advantages of gantries are such that many new proton facili+es are being built with mul+ple gantries • Gantries are very expensive – Large structures, large power, with large heavily shielded rooms • Unlikely that many facili/es will be able to afford mul/ple carbon gantries the size of the HIT gantry. If the size of the gantry the situa/on could be very different • Therefore developing more cost effec+ve, compact gantries has the poten+al for big payoffs
Page 1 and 2: Novel Design of Gantry Optics forCa
Page 3 and 4: A Proton Therapy Center(University
Page 5 and 6: Growth Ion Beam Therapy> 60,000 p
Page 7 and 8: Cell Killing Mechanism Goal of radi
Page 9 and 10: Energy deposited by differentionizi
Page 11 and 12: Ion Beam “Scanned” over tumorTo
Page 13 and 14: Some Existing Proton GantriesPSI Ga
Page 15 and 16: ~8 m ~13 m Gantries are LargePSI-
Page 17: Heidelberg Ion Therapy (HIT) Fa
Page 21 and 22: 1. Active Scanning• Active spot o
Page 23 and 24: Field Patching Large Field è Sc
Page 25 and 26: Scanning Magnets Location• Large
Page 27 and 28: Gantry Functional Specifications•
Page 29 and 30: Isocentric GantryFocal point is at
Page 31 and 32: Compact Excocentric Gantry servi
Page 33 and 34: ETOILLE (LYON) (Superconduc+ng 90
Page 35 and 36: Pavlovic Type Gantry DesignRadially
Page 37 and 38: Heidelberg Gantry and Final 90° Di
Page 39 and 40: Can the size of a carbon gantr
Page 41 and 42: Required Properties• Large Good F
Page 44 and 45: Parameters• Magnetic rigidity (40
Page 46 and 47: Correcting the linear term(First At
Page 48 and 49: Large nonlinearities and distortion
Page 54 and 55: Tracking with optimized windings
Page 56 and 57: Comparison of the two casesInitial
Page 58 and 59: Initial Estimate Size and Weight•
Page 60: Sources GENERAL • M. Pavlovic,

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