Neutrino Factory R&D in EuropeNeutrino Factory R&D in EuropeRob Edgecock/RALRob Edgecock/RAL
OutlineOutline
• Introductioni.e. what has happened since last year• European feasibility study• Proton driver
superbeam developments• Target• Pion collection• Muon front-end• Muon acceleration
…………..with thanks to many people from ..with thanks to many people from whom I’ve stolen transparencies!whom I’ve stolen transparencies!
IntroductionIntroductionLast year: “…..or the art of [talking] for half an hour
about nothing!” cut backs at CERN due to LHC largely not replaced by other labs general lack of funding
This year: some signs of improvement: funding from EC FP6 + ISTC uplift in (at least) one country more positive noises from CERN management future proposals to FP6/7 work still being done………..
CARECARE
European Commission European Commission 66th th FFramework ramework PProgramme:rogramme:• EC has defined various EC has defined various actionsactions to fund to fund• many only for specific many only for specific thematic prioritiesthematic priorities• made substantial funds available – 17.5B€!made substantial funds available – 17.5B€!• some actions possible for PPsome actions possible for PP
ESGARDESGARD• Coordinated a proposal against Coordinated a proposal against IIntegrating ntegrating AActivitiesctivities Coordinated Accelerator Research in Europe• Exploited two activities:
- Networking Activities BENE- Joint Research Activities HIPPI
Superconducting RF(SRF)
CARECARE
30%~.7M€
30%~0.3M€
30%~0.45M€
90%3.6M€
90%3.6M€
25%~1M€
65%~5M€
Other Possible FP6 ActionsOther Possible FP6 Actions
DDesign esign SStudies:tudies:- 1- 1stst round (March 2004): round (March 2004): EUROTeVEUROTeV
EURISOLEURISOL- 2- 2ndnd round ( ): round ( ):NuFactDSNuFactDS
New New JRAJRAs under CAREs under CARE
NNew and ew and EEmerging merging SScience and cience and TTechnologyechnology
both discussed later
UK Funding UpliftUK Funding Uplift
From UK Gov, mainly due to initiative started by Ken PeachFrom UK Gov, mainly due to initiative started by Ken PeachGood news: £21M from PPARCBad news:
LC beam delivery: £9MCockcroft Institute: £7MOxford/RH Centre: £2MUKNF: £2MMICE: £1M
PPARC£7.5MOST
£3-4M
CCLRC
Cockcroft Institute:
Discussed later & WG3
European Feasibility StudyEuropean Feasibility Study
• CERN CERN Yellow Report Yellow Report Published 2004:Published 2004:“ECFA/CERN Studies of a European Neutrino “ECFA/CERN Studies of a European Neutrino Factory Complex”, CERN-2004-002Factory Complex”, CERN-2004-002• Chapter on the machine Chapter on the machine European Feasibility Study European Feasibility Study
European Feasibility StudyEuropean Feasibility Study
Proton DriverProton Driver
CERN proton driver: CERN proton driver: SPLSPL
Number of changes: politically technically
See Haseroth WG3
SPLSPLCERN proton complexCERN proton complex
- increase in protons- ultimate L for LHC
Linac4
SPL
- LHC L upgrade- SB to Frejus- driver for EURISOL/BB- driver for NF
SPL R&DSPL R&D
Collaboration/funding:Collaboration/funding:• HIPPI: CARE JRA
- R&D of the technology for high intensity pulsed proton linear accelerators up to an energy of 200 MeV- 9 labs- 11.1M€ + 3.6M€ (EC) for 5 years (2004-2008)
• IPHI collaboration: - 3 MeV RFQ
• ISTC: - DTL with magnetic focusing (3-40 MeV) - DTL with focusing by RF quadrupoles (DTL-RFQ) (3-40 MeV) - Coupled Cavity DTL (40-100 MeV) - $1550 total - all prototypes delivered by summer 2006
SPL R&DSPL R&D
3 MeV Test Stand to be installed in the PS South Hall (in place for linac 4) Purpose: test essential front-end issues (hardware & beam dynamics) Made of IPHI RFQ + CERN chopper line + IN2P3 diagnostics line + 2 LEP klystrons (1
for the RFQ + 1 for testing other RF structures). Initial use of a standard CERN proton source, to be replaced by an H- source. The elements will be placed in the exact position foreseen for Linac4. Operation with beam: 2007
3 MeV test stand
Chopper line (CERN)
IPHI RFQ(CEA/IN2P3)
RAL Test StandRAL Test Stand
• “5MW” test stand also planned at RAL• Builds on existing test stand for current ISIS upgrade• Work done for the ESS• Main aim is a further ISIS upgrade• Directly relevant to Neutrino Factory• Complementary to CERN:- different chopper, frequency, etc - more generic• Also participating in HIPPI• Close collaboration with CERN developing• Beam >2007
RFQ
Bunch +
accel-
erate
Chopper
Switch in 2 ns
for~0.1 ms
LEBT
Match ion
source to RFQ
Ion sourc
e60 mA
2 ms
Beam
stop
Diagnostics
See Findlay WG3
Target StudiesTarget Studies
Three programmes:Three programmes:• Shock studies of solid targets• TT2A experiment• HARP
See Fabich/Catanesi
PlenaryKirk/Bennett WG3
Shock StudiesShock StudiesElectron beam tests:Electron beam tests:
• Electron beam welding machine• Only realistic possibility for lifetime test• Correct energy density• Only surface effect• First test done
Electron Gun
Aperture Plate Light pipe
Aperture plate
Optical Transport
Window and bellows
To Spectrometer
WaterCooled
BeamStop
Foil Electron Scanning:
Static Load
Upper clamp
Lower guide
50 HzRepetition(100 Hz skip across foils)
Beam Design
Path
Shock StudiesShock Studies
• Second test under consideration• Improved experimental setup & diagnostics• Results also relevant to T2K e-beam
foils
Optical system
Spectrometer output
Simple numerical model
Shock StudiesShock StudiesProton beam tests:Proton beam tests:
• Correct energy density available from PS & at ISOLDE• Lifetime tests difficult• PS will be used for mercury• Solid target tests already done at ISOLDE• Further tests planned, upgraded instrumentation• Also relevant to T2K and CNGS
HARPHARP• Precise measurement of for hadrons• Input for: - Neutrino Factory & superbeam
- atmospheric neutrino flux- hadron production models -
MiniBooNE, K2K, LSND experiments
ltdpdpd /2
• Data taking in 2001 and 2002• 420M physics triggers, 1.5 to 15 GeV/c, many targets• Since then: understanding detector• First physics distributions: winter conferences 2004• Latest results: this week………..
Pion Collection - HornsPion Collection - Horns
BEAM AXIS
1500
1000
Ø80
0
Ø20
00
Ø80
600 kA (outer horn)
300 kA (inner horn)
Not to scale
• Baseline collector in CERN layout: horn• Standard for conventional neutrino beams
Two horns required to achieve focussing
needed for the Neutrino Factory
See Fabich WG3
HornsHorns
• Three main issues being studied: - lifetime due to pulsing: 300/600kA at 50Hz
NEUTRINO FACTORY PROJECT - HORN PROTOTYPEGENERAL ASSEMBLY
S. Rangod 18/10/2001
Ø42
0
1030
Mag
netic
mea
sure
men
ts p
lane
- heating/lifetime due to beam
48.2 kW67kW
78.7kW
4MW, 2.2GeV proton beam
+8kW from Joule effect
14.9kW
- optimisation of parameters for physics
Muon Front-endMuon Front-end• CERN “baseline”: all 88MHz linear channel
target
and horn
15 m deca
y channel
7.2 m phase
rotat
ion
cooling (6
.4 m/ce
ll)
80 MHz
Decay Rotation Cooling I Acceleration I
Acceleration II
Length [m] 15 8 90 10 450
Diameter [cm] 40 40 40 30 20
B-field [T] 4 4 4 4 quads
Frequency [MHz] 80 80 80 80-200
Gradient [MV/m] 4 4 4 4-10
Kin Energy [MeV] 200 200 300 2000
Basically unchanged for
2 years
RAL Front-end StudiesRAL Front-end Studies
• Two front-ends being studied at RAL:- inverse phase rotation chicane- cooling ring
S = solenoid, A = absorber, 36 cavities in blocks of 3• Both currently being optimised (pre-GRID!)
FunnellingFunnelling• Split proton beam on to “4” targets + hornsSplit proton beam on to “4” targets + horns• ““Funnel” pions into same decay channelFunnel” pions into same decay channel• FODO focussing using quads, rather solenoid focussingFODO focussing using quads, rather solenoid focussing
Pions
Muons
Front-end R&DFront-end R&D
• Contributions to three projects:Contributions to three projects: - - MuScatMuScat - - MuCoolMuCool - - MICEMICE• Two others in Europe:Two others in Europe:
- Frictional cooling - Frictional cooling - Laser ionisation of muonium- Laser ionisation of muonium
MuScatMuScat
• Measurement of muon MCS as input toMeasurement of muon MCS as input to - - cooling simulationscooling simulations - MICE- MICE
- Geant- Geant• Two data-taking runs at TRIUMF Two data-taking runs at TRIUMF – 2000 & 2003– 2000 & 2003
• Data analysis taken longer than expected(!):- high precision experiment -
small fractions of a few people• First results this week
See Murray Plenary
MICEMICE
European contributionsEuropean contributions• Beamline and infrastructure: UK, Switzerland • Tracking detectors: Italy, Switzerland, UK• Particle-id detectors: Belgium, Italy• Coils: Italy, UK • RF-power: Switzerland, UK• Magnetic field measurements: Netherlands• Software: Italy, Switzerland, UK
Muon AccelerationMuon Acceleration
Some activity on RLAs:Some activity on RLAs:- at CERN some time ago- Saclay more recently
More recently, much activity on FFAGs:More recently, much activity on FFAGs: - Saclay: beam dynamics studies
150 MeV proton FFAG: horizontal & vertical beam envelopes
- CERN: development of FFAG simulations beam dynamics and lattices studies -
RAL: studies towards an isochronous, 16 turn, 8-20 GeV FFAG
See Meot WG3
Electron Model FFAGElectron Model FFAG• Electron model of a non-scaling FFAG• Much work done (by one person!) parameters for 10-20 MeV machine 15m in circumference• Increasing EU participation:
- high current p-driver- medical applications- ADS- ion acceleration- industry
• Have a candidate host lab: Daresbury- two possible injectors- some associated infrastructure
• Investigating funding, e.g. FP6
ConclusionsConclusions• Financial situation has improved• Hopefully, this will continue!• Focus on a number of projects to attract more people• Proton driver:
- very healthy - two test stands under development• Target and collection:
- TT2A- solid target shock studies -
tests/simulations of horns - First HARP results soon• Front-end:
- First MuScat results - MICE progressing well• Acceleration:
- Focus on e-model FFAG