accelerator r&d
DESCRIPTION
Accelerator R&D. FFAGs........EMMA, PAMELA, ADSR, etc Target studies.........neutrons for BNCT, ADSR, security, etc. NS FFAGs. Non-Scaling Fixed Field Alternating Gradient Invented for muon acceleration in a Neutrino Factory. Also interesting for other applications. For example: - PowerPoint PPT PresentationTRANSCRIPT
Accelerator R&DAccelerator R&D
• FFAGs........EMMA, PAMELA, ADSR, etc
• Target studies.........neutrons for BNCT, ADSR, security, etc
NS FFAGsNS FFAGs
• Non-Scaling Fixed Field Alternating Gradient
• Invented for muon acceleration in a Neutrino Factory
Also interesting for other applications.
For example:hadron therapyADSRProton acceleration
NS FFAGsNS FFAGs
• But.....novel features.......must build PoP machine
• Not cheap, so where does the funding come from?
• Exploit KE possibilities, via BT fund
• CONFORM consortium: £8.2M
Build PoP machine – EMMA
Design Hadron therapy machine – PAMELA
Study other applications, mainly ADSR and muons
Started 1st April 2007, finish March 2011.
EMMAEMMA
EMMA StatusEMMA Status
• Being commissioned
• Beam has made many turns at fixed energy
• Acceleration being worked on....will restart in Jan
• “2 year” experimental programme to follow,subject to funding
EMMA Control room22:45 on 22nd June
4-sector commissioning
PAMELAPAMELA
PAMELA StatusPAMELA Status
• Design study finished and being written up
• Next step - prototyping:
Ring magnet
RF cavity
Extraction kicker
• There is interesting in building it
ADSRADSR
AcceleratorAccelerator
• Crucial component
• 10MW
well beyond state-of-the-art
• 99.9% reliability
unheard of!
needs redundancy
• Only two candidates:
linear accelerator ← expensive
FFAG ← build ~3 for same price
H
A
BC
DE
FG
HH
cA cB
cC
cD
cE cFcG cH
A 1. ,4.88616 B 2.674 ,4.20703 C 3.03267 ,3.85867 D 3.43662 ,3.43662 E 1. ,3.2672 F 2.00856 ,2.8764 G 2.2306 ,2.67393 H2.45023 ,2.45023 cA 1. ,5.37477 cB 3.25798 ,5.37477 cC 3.31087 ,4.2696 cD 3.79024 ,3.79024 cE 1. ,2.58876 cF 1.86471 ,2.58876 cG 2.03113 ,2.37929 cH2.20521 ,2.20521
0.5 1.0 1.5 2.0 2.5 3.0 3.5
2.5
3.0
3.5
4.0
4.5
5.0
2m
800 1000 1200 1400 1600P , MeV c
1 .0
1 .5
2 .0
2 .5
3 .0v
1 0 0 0 1 2 0 0 1 4 0 0 1 6 0 0P , MeV c
4 .0
4 .5
5 .0
Rav g
Parameter 250 MeV 585 MeV 1000 MeV
Avg. Radius (m) 3.419 4.307 5.030
Cell x / y (2 rad)Ring.
0.380/0.2371.520/0.948
0.400/0.1491.600/0.596
0.383/0.2421.532/0.968
Field F/D (T) 1.62/-0.14 2.06/-0.31 2.35/-0.42
Magnet Size F/D Inj 1.17/0.38 1.59/0.79 1.94/1.14
• Comments and further work– Tracking results indicate ~50-100 mm-mr; relatively
insensitive to errors– Low losses :
General Parameters of an initial 0. 250 – 1 GeV non-scaling, isochronous FFAG lattice design
Clockwise: Ring tune from design script, deviation from isochronous
orbit (%), and radius vs. momentum
1 0 0 0 1 2 0 0 1 4 0 0 1 6 0 0P , MeV c0 .0 1
0 .0 2
0 .0 3
0 .0 4
0 .0 5
0 .0 6
0 .0 7
D Rad
Isochronous 250-1000 MeV NS FFAG Ring
Corporation
Particle Accelerator
Target StudiesTarget Studies
• Most likely show-stopper for a Neutrino Factory
• 4MW beam, 0.75MW in target, 300J/cm3 Thermal shock: >1GPa – exceeds tensile strength Temperature: 100K/pulse, 50 pulses/s Radiation damage
Radiation safety!
• Solution found using tungsten
• Has involved:
modelling of energy deposition, stress waves, etc
measurements of shock and cf with modelling
simulation of pion, neutron, etc, production
activation studies, shielding requirements
cooling studies
Target StudiesTarget Studies
Measured Young’s Modulus & yield strength of W and Ta at higher temp and strain rate than anybody else.
Expertise gained applicable elsewhere.
BNCTBNCT
BBoron oron NNeutron eutron CCapture apture TTherapy herapy
• Used, for example, to treat “glio-blastoma multiforme”
• Use boron-10: stable, but fissions with a thermal neutron
Needs a lot of ns:
1x109 cm-2s-1 for 30mins
Only current source: nuclear reactor!
Possible with accelerators: 5mA
protons at ~2.5MeV 12.5kW in ~100m
• Accelerator & BNCT facility exist in Bham
• Project to upgrade starting: aim clinical trials
BNCTBNCT
Other Target ActivitiesOther Target Activities
• Thermal neutrons for
ADSR
Waste transmutation
Security applications
• Goran Skoro: possible next ISIS target expert