Large momentum acceptance gantry for CNAO
Transcript of Large momentum acceptance gantry for CNAO
Large momentum acceptance gantry
for CNAO
9/19/2015 1 CNAO gantry
Dr. Dejan Trbojevic Brookhaven National Laboratory
Replacing the large magnet
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Concepts
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ULICE gantry
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Gantry room
Gantry room
Modern Hadrontherapy Gantry Developments 6
Even shorter and save one shelf/support
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6.8
41
66
m
0.5
m
3.7
91
3 m
2.7
60
7 m
Magnified x10 =±10cm
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Beam line
Synchrotron Phase shifter stepper
Match 1
Match 2
Rotator
Gantry
• In the mobile isocenter gantry the rotator must
be placed between a “first” fixed dipole to launch
the dispersion and the gantry.
• With a closed dispersion gantry the rotator can
be positioned upstream the “first” dipole (which
then turns into an achromat).
• Thus, one rotator, many gantries!
• Longer/Narrower footprint
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PVS
COUCH
BPIS
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The ULICE gantry: Beam Based Alignment
Measure where the beam is and put the isocenter there…
CNAO treatment room #2: PPS and PVS
One robot arm with two “tools”
Isocenter position moves and is not easy to measure/verify/define
Thank you for your attention
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