Photonuclear & Hadron Physics Future outlook

Daniel WattsUniversity of Edinburgh

Scope of talk

• Forward look at future Photonuclear/Hadron Physics facilities

• Indicate the present engagement of the Glasgow and Edinburgh groups in these projects in terms of equipment R&D

• Outline (some of!) our Physics interests at the new facilities

Worldwide activity

Ee- = 0.9 - 12 GeV

Ee- = 1.5 GeV

Ee- = 0.25GeVEe- = 27.5 GeV

Facilities : Medium to long TermPp =15 GeV/c

Timelines & Upgrades

2005

2010

2015

2020

2025 Facility upgrade

MAX@0.25 GeV106γs-1MeV-1

MAMI@1.5 GeV105γs-1MeV-1

JLab@12 GeV108 γs-1

Panda@15 GeV/c1011 p stored& cooled

Hermes@27.5 GeV

• 100% duty factor electron microtron• MAMI-C 1.5 GeV upgrade (2006)

(MAMI-B 0.85 GeV)

The MAMI-C facility

One of the MAMI-C magnets γ

e

Contributions to Future facilities : MAMI-CUpgrade of photon tagger & polarised γ (Glasgow)

Recoil Nucleon Polarimetry (Edinburgh)

Particle Identification sub-detector (Edinburgh)

Recoil Polarimeter

Analysing scatterer

TAPSScattered nucleon

detectorCrystal Ball

γHydrogen target cell

Tracking detectorp

Physics : MAMI-C• Provide “ambiguity free” information on the spectrum of nucleon resonances – First ever complete determination of observables

γ + N → N* → N + π

• Magnetic moments of nucleon resonances e.g. µ(s11(1535))

• World’s leading η,η’ meson production facility - Test QCD based models and C, CP, CPT invariance

• Precision Nuclear Matter form factor measurements (~0.05 fm accuracy)

• Use photon probe as complimentary way to access neutron rich nuclei??

JLab@12 GeV

TOF

40o

DC

Target

Torus Coil

DC

0

Gas Cherenkov High threshold

Flux return

EC/SCTracker

5m

5o

Winston Conesamd PMTs

Forward ECFreon-13B

or CO2

Solenoid Coil

ShieldSolenoid

Moeller

9 GeV tagged polarized photons and a 4π hermetic detector

D

Super High Momentum Spectrometer (SHMS) at high luminosity and forward angles

CTargetPolarization: 40%

To BeamDump

Moller Polarimeter

Laser hut

Beam Polarization: 80%Beam Current: 15 µA

D

QD

DQ

HRS Spectrometer

Detector

D

Q

Q

Q

D

Q

Q

Q

HRS Spe

ctro

met

er

Shower Counter

Drift Chambers

Scintillators

ovCerenk

Medium-Acceptance Device

Spectrometer

Medium Acceptance Detector (MAD) at high luminosity and intermediate angles and Big Bite spectrometer

CLAS upgraded to higher luminosity and coverage

B

A

Proposed detector facilities:JLab@12 GeV

Contributions to Future facilities:JLab@12 GeV

Design of Magnet for Hall D photon tagging spectrometer (Glasgow)

Polarised photon R&D (Glasgow)

Hall D Magnet design Big Bite

Focal plane detector for large acceptance “Big Bite” Spectrometer (Glasgow)

Nucleon Polarimetry (Edinburgh)

Polarised nucleon target development (Edinburgh/Glasgow)

G. Bali et al.,hep-lat/0003012

aV(r) br

r= − +

q q Hall D:Flux Tube excitation leads to a new spectrum of hybrid mesonsSome hybrids have exotic quantum numbers

Physics: JLab@12 GeV

quark motion plusflux tube excitation

Q

Q

JPC = 0-+ 0+- 1+- 1-+ 2-+ 2+-

exotic

Halls A, B, C:Elastic electron scattering: Form factors of simple quark systems D, n, p

Polarised Inclusive/Semi-inclusive/exclusive electron scattering: Colour transparencyQuark distribution/polarisations in the nucleon, DVCS → Generalised Parton Distributions (GPDs)

ee’

27.6 GeV e+/e-

DVCS at Hermes : Recoil Detector

HESR /PANDA

PANDA@FAIR

1011 stored and cooled 1 - 15 GeV/c antiprotons

Physics : PANDA@FAIR

ggg

Physics : PANDA@FAIR

Glueballs – exotic objects with no quarks. Comprised entirely of gluons!

Fundamental test of QCD

Antiproton annihilations wellsuited to creating gluon richfinal states

gg

g

Glueball spectrum predicted from Lattice QCD

Contributions to Future facilities : PANDA@FAIRDesign of magnetic solenoid (Glasgow)

RICH (Glasgow)Endcap DIRC (Edinburgh)

Grid computing technology (Glasgow)

Nucleon Polarimetry (Edinburgh)

p

Interaction point

SolenoidDipole

EM and hadroncalorimeters

RICH

Drift or wirechambers

Muon counters

Simulations (Glasgow/Edinburgh)

Summary

• Edinburgh and Glasgow groups will utilise four major new facilities which come online in the next 1-6 years (MAXLab@0.25GeV, MAMI@1.5GeV, JLab@12GeVPANDA@FAIR)

• We are in a good position to exploit and develop these new opportunities