European Involvement in T2K Neuchatel June 21, 2004 Dave Wark Imperial College /RAL.

European Involvement in T2K

NeuchatelJune 21, 2004

Dave WarkImperial College /RAL

…to

T2K

Euro

pean in

put…

Imperial College/RAL

Neuchatel Meeting

June 21’04

Dave Wark

• Italy Padova, Naples, Roma

• France Saclay, IN2P3

• Spain Valencia, Barcelona

• Switzerland University of Geneva, ETH

• United Kingdom Imperial College, QMW, Warwick, RAL, Liverpool, Sheffield

• ~25 physicists currently, more being sought

• Mailing list, regular meetings at CERN

• Many have joined K2K

European Groups Ready to Join T2K

decay pipe

Near detector

TargetStation

-pit280m

130m

Neutrino Beam Facility Overview

Technical Design&Development (Status) Reporthttp://jnusrv01.kek.jp/jnu/nu-TAC/

• Primary proton beam line Normal conducting magnets Superconducting magnets Proton beam monitors Vacuum system Collimators/beam plug

• Target station Target Horn Remote handling system

• Decay pipe• Beam dump• Muon monitors

…to

T2K

Euro

pean in

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Neuchatel Meeting

June 21’04

Dave Wark

Proposed European Contributions:

• Beam Design of the beam dump

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T2K

Euro

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Neuchatel Meeting

June 21’04

Dave Wark

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T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

Simulations now being performedat RAL, proposing to do the

engineering design


• Beam Design of the beam dump Target expertise

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

J/gK degree

Z

RTemperature rise of the target due to the radiation

w/ 1 pulse

cal. w/ MARS

30mm graphite target : energy deposit is ~60kJ/spill

Thermal stress analysis (incl. shock wave)and cooling system design is now on-going.

maximum~ 180J/g

Target system

23m

Iron shield

Helium vessel

Machine room Service pit

Storage for radioactive material

12m

33m

Iron shield

Concrete blocks

40 ton crane

Target & 1st horn 2nd horn 3rd horn

Final focus

Decay volume

Concrete structure

Ground level

Baffle

22m

Extremely high radiation environment

Neutrino target station

Aluminum wallfilled with He

RAL•CERN(?)•PSI(?)


• Beam Design of the beam dump Target expertise Proton beam final focus monitoring

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

Where shall we install the monitors

FFTS-Beam

Arc

PS

I,C,P

C,P

C,P

I,C,P

C,P

C,P

C,P

C,PC,PC,PC,P

P

PP

C,P

C,P

C,P

I,C,PI,P

TGT

Beam MonitorI : Intensity (CT)C: Center position (LPM)P: Profile (SSEC/RGBPM)

BLM will be placed along the beam line.

Detector

electrons

・ Residual gas is ionized by proton beam

・ Produced electrons are collected by Straight Electric Field.

・ Collected electrons are detected by MCP (Micro Channel Plate) or EMT (Electron Multiplier Tube) equipped with the multi-anodes.

・ Non Destructive ・ Cover the wide range of proton intensity MCP

Electric Field

Profile Monitor : (2)RGBPM

Estimated signal of readout ~ 1011[electrons/ch] (J-PARC: 1e^-7 Torr)

J-PARC Fast beam High intensity Magnetic Field is necessary (B>0.03T for a few mm resolution)


• Beam Design of the beam dump Target expertise Proton beam final focus monitoring Muon monitors/muon monitor electronics

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark


• Beam Design of the beam dump Target expertise Proton beam final focus monitoring Muon monitors/muon monitor electronics Beam windows

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark


• Beam Design of the beam dump Target expertise Proton beam final focus monitoring Muon monitors/muon monitor electronics Beam windows Quench detectors

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• 280m detector

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

20m

36m

3

2

SK direction

16m

5m

FGDMRD

Neutron shield

~14m

SK

Grid profile

beam

1m

1m

Conceptual design of the near neutrino detector

Off-axis (~2o)

On-axis (0o) Beam direction and stability

The detector designis only just started.

3m

and e fluxes and spectra

interaction study

Kaon contributions

(CC-QE, non-QEand 0 )

(w/ Magnet?)



• 280m detector

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• 280m detector Major European contribution – magnetize the 280m

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

UA1/NOMAD Magnet

Advantages• greatly reduces expensive MRD• improved measurement of p

• Charge id on (most) tracks

Accepted as default design



• 280m detector Major European contribution – magnetize the 280m

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• 280m detector Major European contribution – magnetize the 280m Fine-grained tracking to take advantage of the magnetic field

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• 280m detector Major European contribution – magnetize the 280m Fine-grained tracking to take advantage of the magnetic field EM calorimeter?

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• 280m detector Major European contribution – magnetize the 280m Fine-grained tracking to take advantage of the magnetic field EM calorimeter? Electronics?

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• 280m detector Major European contribution – magnetize the 280m Fine-grained tracking to take advantage of the magnetic field EM calorimeter? Electronics? DAQ? …to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark


• 2 km detector Would provide the ultimate sensitivity.

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

Convincing demonstration ofe appearance will requiredetailed understanding of

backgrounds

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T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

Which will in turn requirea detailed understanding

of the near/far comparison

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T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark


• 2 km detector Would provide the ultimate limit to systematics.

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T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark


• 2 km detector Would provide the ultimate limit to systematics. Are participating in simulation and conceptual design

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark


• 2 km detector Would provide the ultimate limit to systematics. Are participating in simulation and conceptual design Would contribute some substantial element, like the FGD

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark


• 2 km detector Would provide the ultimate limit to systematics. Are participating in simulation and conceptual design Would contribute some substantial element, like the FGD Perhaps use a medium-sized LAr calorimeter?

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• Hadron Production data

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• Hadron Production data HARP

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark



• Hadron Production data HARP HERO/NA49/some other experiment

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark




• Software/Analysis

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T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark




• Software/Analysis Contribute state-of-the-art software techniques

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T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark




• Software/Analysis Contribute state-of-the-art software techniques Fully participate in analysis and verification of any results

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

FAQ (or rather FHO).

• There is nothing for Europe to contribute to T2K I hope I have shown otherwise.

• The Japanese can do it all. No they can’t.

• It is too far. It is no farther than SLAC. Japanese groups routinely work at CERN and RAL.

• What is in it for us? The opportunity to play a central part in the key experiment on 13. The opportunity to grow the European experimental community Fantastic experience in water Čerenkov detectors. Fantastic experience in doing near/far comparisons. Involvement in the next premier facility. Continue the unification of the world’s physics community.

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

…to

T2K

Euro

pean in

put…


Neuchatel Meeting

June 21’04

Dave Wark

European Involvement in T2K Neuchatel June 21, 2004 Dave Wark Imperial College /RAL.

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