radiation therapy, hadron therapy
TRANSCRIPT
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EMMA,
BASROC,
Hadron Therapy
and ADSRs
Roger Barlow
STFC Cockcroft Review
Feb 11th 2009
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EMMA
Worlds first non-scaling FFAG underconstruction
84 magnets, 19 RF cavities. Accelerate
electrons from 10 to 20 MeV in 16turns
Funded through Basic Technology
scheme + FP7 EucardBeing built here.
On the tour later
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Vision and
Reality
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EMMA - completion
Almost halfway through 4 yearprogramme
Components ordered. Many (magnets,
cavities, vacuum) arrived and beingchecked out and preassembled onto
girders.
Design of injection/extraction systemschallenging but now complete.
On track to start commissioning
November 2009
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EMMA - operations
Commissioning 12 months (nominal).Much to learn about new type of
accelerator
Baseline configuration
Single energy injection and extraction
Min and max energy run
Lattice tuning
Map tune and time of flight
Accelerate single bunch
Map longitudinal phase space
Vary RF parameters and map
longitudinally
Map transverse phase space
Additional configurations
Vary time of flight
minimum on baseline
Vary tune
High efficiency lattice
Repeat baseline
activities, possibly withdifferent emphases
First proposal
by Scott Berg
Need to co-exist with ALICE
Need to plan / budget for
running EMMA as research
machine
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nsFFAG advantages:
Superior to rapid cycling synchrotron and / orisochronous cyclotron from some applications
DC magnets cheap, simple
Very rapid acceleration time High currents (frequency+duty cycle)
Amazingly generous acceptance
Good dynamic range (factor 4-5 in
momentum) Round beam pipe, reasonable diameter
Essential for muon collider/ neutrino factory
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BASROC
British Accelerator Science Radiation andOncology Consortium
Aim: hadron therapy in the UK using an
nsFFAGMembers: accelerator physicists, medical
physicists, clinicians, industry includingmany from Cockcroft and from John Adams
Institute, from Churchill and Clatterbridgehospitals
Arrange meetings, workshops, co-operate ingrant applications
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First BASROC project, successfulapplication to Basic Technology
schem
CONFORM
Roger Barlow
Neil Bliss
EMMA: prove nsFFAG conceptand get experience
Rob Edgecock
Neil Bliss
PAMELA: design a hadron therapysystem using the nsFFAG
Ken Peach
Ian Gardner
Applications : find other possibleuses and build links with user
communities
Karen Kirkby
Bob Cywinski
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PAMELA
Design a medical nsFFAG acceleratorfor hadron therapy, at the level where
it can be proposed to the NHS/MRC
Pool of people from Oxford, Lancaster,Cockcroft etc: machine
designers+magnets+RF+clinical input
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Applications
Cell dosimetry (Surrey) to validateproton/hadron deposition as method
for killing tumour cells
Next generation dedicated muonsource for SR (Huddersfield, at
Cockcroft)
ADSRs
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ADSRs
Energy Amplifier (and similar) concepthas been around a long time why no
progress?
Accelerator is weak point: ~10 mA at ~1GeV with veryhigh reliability
nsFFAG could be the answer:
simple(=reliable), high current,relativistic energy
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ThorEA
Workshops on FFAG/ADSR were popularADSR08 followed on from FFAG08 atManchester.
Evolved into ThorEA research association:more workshops and co-operative grant bids.www.thorea.org
Mix of institutes and disciplines, research andindustry
Grants from
EPSRC Leeds+Manchester EPSRC Cambridge
STFC PNPAS Manchester+Huddersfield
http://www.thorea.org/http://www.thorea.org/ -
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Where next
After EMMA next step is protonmachine (to include variable RF
frequency)
Energy? Current? Cost? Research machine or prototype?
Clinical or ADSR or ?
Where? Daresbury? Harwell?Somewhere else?
We now need to address these
questions.