Talk outline for ...

"Status and Plans of Light Hadron Spectroscopy at Jefferson Lab"
 (30 minutes)

 1) TITLE SLIDE

    Presently running experiments: CLAS, RadPhi (refer to Scott's talk)
    Preparations for the future: CEBAF upgrade and Hall D

 2) JLAB ORIENTATION SLIDE: Where it is, what kind of accelerator, ...

 3) CLAS ORIENTATION SLIDE

    Physics:  Baryon s-channel photoproduction
                   i.e. gp->N*,Del* for Eg<2.5 GeV or so
              Meson t-channel photoexcitation
                   i.e. gp->X^0p,X^+n,XN* for Eg<6 GeV or so

    Facility: Tagged photon system
                   Flux ~few X 10^7/sec for 0.2E<Eg<0.95E
              CLAS Multiparticle toroidal spectrometer

 4) CLAS DETECTOR SCHEMATIC

 5) BARYON EXCITATION DATA: Use gp->pPiPi, sig vs Eg, pPi & PiPi mass

 6) MESON EXCITATION PROPOSAL: Figure from Gary Adams

 7) HALL D ORIENTATION SLIDE

    Energy upgrade plans for CEBAF: ->8 then ->12 then ->24 (w/dates)
    New high energy beamline, experimental hall, mulitparticle spectr.

 8) ENERGY UPGRADE: "The CEBAF Beam Energy" from my CMU talk

 9) ENERGY UPGRADE: "Gradient Limitations for SRF Cavities" from CMU

10) THE HALL D COLLABORATION: Still growing

11) HALL D PHYSICS PROGRAM

    - Light meson spectroscopy, their decay patterns, and the
      study of gluonic excitations (up to charm threshold)

    - Phi photoproduction dynamics and rare decays of phi mesons
      (including eventual studies of CP and CPT violation)

    ... with high energy photoproduction using transversely and
        circularly polarized photon beams

12) PUZZLES AND POSSIBILITIES IN THE LIGHT MESON SPECTRUM

    Refer to Godfrey and JN, hep-ph/9811410:

    - Emerging candidates for JPC exotics
    - Scalar mesons and glueball candidates
    - E/iota and strangeonium states
    - Peculiar vectors including the C(1480)

13) E852: MASS DISTRIBUTION AND PWA FOR pi^-p -> pi^-pi^+pi^-p

14) PERIPHERAL PION VS PHOTOPRODUCTION: S=0 vs S=1 excitations

15) SLAC BUBBLE CHAMBER: PRD 41(1990)3317 & PRD 48(1993)3045

    gp -> pi^-pi^+pi^-Delta^++ and pi^-pi^+pi^+n
    Compare mass spectra to E852 (i.e. very different!)

16) PHOTOPRODUCTION OF EXOTICS: Like Alex's cartoon

17) S/P INTERFERENCE IN GP->KKP: Z.PHYS C12(1982)1 & NP B143(1978)408

    Possible tool to exploit for CP and CPT violation w/pol'd photons?

18) CEBAF SITE AND HALL D LOCATION

19) HALL D DETECTOR: Stage-I and Stage-II

20) BEAM ENERGY CHOICE: Like Alex's "Effect of tmin on yields"

21) COHERENT BREMSSTRAHLUNG: Use one of Richard's pretty slides

22) TRIGGERS, RATES, EXPECTED DATA SAMPLE, ...

23) ADVERTISEMENT FOR RPI WORKSHOP