Agenda

1
Agenda

• Welcome
• Introduction - Rob
• Update on e-model from FFAG04 - Rob
• ERLP - Hywel
• Fundraising, inc. other uses of - All FFAGs
• Next steps - All
• Future meetings

2
FFAGs
Japanese layout No cooling!
3
FFAGs
US layout Much reduced cooling!
4
FFAGs
Prototype for proton cancer therapy neutron
production (BNCT)
5
FFAGs
In addition

• 150MeV FFAG at Kyoto University to study ADS
• ion FFAG at National Institute of
  Radiological Sciences, Chiba, for ion cancer
  therapy
• Mitsubishi proton ion FFAG for cancer
  therapy electron FFAG for CT scanning,
  industrial irradiation
• interest in UK for proton therapy ion
  implantation

• PRISM at Osaka for rare muon decays
• proton upgrades at BNL, FNAL, KEK
• 10GeV electron FFAG at BNL for eRHIC
• LHC intensity upgrade

(Almost) all scaling machines
6
FFAGs
The reasons current and rep rate
reliability cost losses
acceptance
Proton therapy
7
Proton Therapy
Standard Needs to be reasonably fast
Mori claims synchrotrons killed by space
charge cyclotrons killed by losses IBA
machines have had problems FFAGs are ideal
8
Proton Therapy
Spot scanning
9
Proton Therapy
..at PSI
1st dimension
2nd dimension
3rd dimension
Beam 7mm FWHM 5mins for 1L tumour
10
Proton Therapy
..at PSI
11
Proton Therapy

• For hospital use
• reliability
• very small losses
• minimum cost
• 12C option
• variable energy extraction
• e.g. FFAGs?

12
Scaling vs Non-scaling

• Non-scaling - smaller orbit radius
  increase with energy ? smaller aperture magnets
  (?10) ? smaller circumference - linear
  variation in B-field ? simpler magnets
  ? should be cheaper than scaling FFAG
• - parabolic variation in revolution frequency
  with energy

13
Scaling vs Non-scaling
Path length
Travel time
/p

• smaller variation in frequency
• synchronous with RF at two energies
• no need to modulate RF
• CW operation possible?

14
Non-scaling
Problems

• Rapid tune variation many integer half
  integer resonances crossed
• Acceleration outside buckets
• Neither properly tested
• Non-scaling may bring substantial cost savings
• have
  benefits

? non-scaling POP
15
Electron Model

• Aim test the muon machine
• Not too expensive ring 20m circumference
• Acceleration 10-20 MeV higher E(inj)
  interesting
• Extraction also necessary (diagnostics)
• Recognised that study of resonances important ?
  variable energy from driver
• RF frequency 2.86GHz vs 1.3GHz ? single
  bunch from ERLP?
• Lower frequency interesting because more turns
• Resonance crossing out of bucket accel ? 2
  RF systems
• Cost CJ 2M for magnets (most expensive bit)

16
Electron Model
Keil model
Orbit cell length (triplet) 0.38m Number of
cells 45 Circumference 17.1m RF
gain 2.25 MeV RF frequency 3 MHz
Harmonic number 171 Magnet bore radius
F/D 25/32 mm Magnet length 50/100 mm ?
10 to 20 MeV in 5 turns
Non-scaling, linear
17
Feedback from FFAG04
..but only if it effects non-scaling POP
Ruggiero Trbojevic

• 1.5-GeV BNL-AGS Upgrade C 807 m
• 1.0-GeV 10-MWatt Proton Driver C 202 m
• 250-MeV Medical Facility C 36 m

All non-scaling lattices
18
Feedback from FFAG04
F-Sector D-Sector RF Long Straight
10 cm x 20 cm Elliptical Vacuum Chamber
10 cm Diameter Circular Vacuum Chamber
Shaped poles and minimised edge effects to reduce
tune variation
19
Feedback from FFAG04
20
Feedback from FFAG04
21
Feedback from FFAG04
8-20 GeV isochronous muon FFAG, 16 turns 8-20 MeV
electron model, 20 turns
Rees
Non-scaling, but non-linear (polarity flips for
Fs)
22
Feedback from FFAG04
23
Feedback from FFAG04
Rees model
Orbit cell length 0.65m Number of
cells 45 Circumference 29.25m RF
gain 600 keV RF frequency 3002.1 MHz
Harmonic number 293 ? 8 to 20 MeV in 20
turns ? 11 to 20 MeV in 15 turns
24
Conclusions?

• The next POP to be built is non-scaling
• There is a lot of support for this
• Everybody has own non-scaling FFAG and model
• We need to take this business in hand!
• This requires commitment from CCLRC
• Small team with appropriate expertise
• Need also to bare in mind funding possibilities
• Ensure that our plans take these into account

25
Possible Funding
FP6

• New and Emerging Science and Technology -
  Insight - Pathfinder - Adventure

Adventure projects are visionary research
projects, aiming to create and/or develop new
opportunities for science and technology which
could have a very high potential payoff in the
long term, in particular in new interdisciplinary
areas. They are identified by their
characteristics of significant novelty, very high
ambition and high impact.

• Next call..December
• Deadline13th April!
• Two stage process 5 pages admin forms

26
Possible Funding

• FP7?
• EPSRC?
• Others?

• It is clear we need to attract interest/support
• So far. Neutrino Factory Beta-beams/
  EURISOL
• Possible.. High current proton
  machines Proton therapy etc