1. Thomas Jefferson National Accelerator Facility Page 1 Physics LRP December 8, 2011 Glenn R. Young Experimental Nuclear Physics Division Town Meeting Jefferson Lab December 8, 2011 12-GeV Upgrade “<5 years” Scientific Program

2. Thomas Jefferson National Accelerator Facility Page 2 Physics LRP December 8, 2011 Highlights of the 12 GeV Program Spin and Flavor Dependence of Valence Parton Distribution Functions Distribution of Charge and Current in the Nucleon New View of Hadron (and Nuclear) Structure: Generalized Parton Distributions  Determination of the quark angular momentum

3. Thomas Jefferson National Accelerator Facility Page 3 Physics LRP December 8, 2011 Highlights of the 12 GeV Program Exploration of QCD in the Nonperturbative Regime:  Existence and properties of exotic mesons Nuclear Structure in Terms of QCD  Spin and flavor dependent EMC Effect  Study quark propagation through nuclear matter Precision Tests of the Standard Model

4. Thomas Jefferson National Accelerator Facility Page 4 Physics LRP December 8, 2011 Hall D – exploring origin of confinement by studying exotic mesons Hall B – understanding nucleon structure via generalized parton distributions Hall C – precision determination of valence quark properties in nucleons and nuclei Hall A – short range correlations, form factors, hyper-nuclear physics, future new experiments (e.g., PV and MOLLER) 12 GeV Scientific Capabilities

5. Thomas Jefferson National Accelerator Facility Page 5 Physics LRP December 8, 2011 Detector Performance Requirements Hall DHall BHall CHall A excellent hermeticity luminosity 10 35 energy reachinstallation space polarized photonshermeticityprecision E  ~8.5-9 GeV11 GeV beamline 10 8 photons/starget flexibility good momentum/angle resolutionexcellent momentum resolution high multiplicity reconstructionluminosity up to 10 38 particle ID

6. Thomas Jefferson National Accelerator Facility Page 6 Physics LRP December 8, 2011 12 GeV Upgrade Schedule Hall A: fabrication delayed to FY12 start; first Hall to receive beam 10/2013 Hall D: new; early access to allow for solenoid work; re- planned installation to accommodate solenoid test and maintain detector installation; beam 4/2014 Hall C: requires SOS removal; limited by funding rate; last to receive beam 10/2014, w/Hall B Hall B: requires CLAS removal; limited by funding rate; last to receive beam 10/2014, w/ Hall C

7. Thomas Jefferson National Accelerator Facility Page 7 Physics LRP December 8, 2011 12 GeV Science Program The physical origins of quark confinement (GlueX, meson & baryon spectroscopy) The spin and flavor structure of the proton and neutron (PDF’s, GPD’s, TMD’s…) The quark structure of nuclei Probe potential new physics through high precision tests of the Standard Model Program Advisory Committees (PAC) 30, 32, 34, 35, 36, 37, 38 –2006 through 2011 –48 experiments approved; 7 conditionally approved –PAC39 scheduled June 2012 Exciting slate of experiments for 4 Halls planned for initial five years of operation!

8. Thomas Jefferson National Accelerator Facility Page 8 Physics LRP December 8, 2011 12 GeV Approved Experiments by Physics Topics E12-11-105 has not been counted with the experiments since it is considered a test

9. Thomas Jefferson National Accelerator Facility Page 9 Physics LRP December 8, 2011 12 GeV Approved Experiments by PAC Days Hall B has substantial parallel running Hall A PV experiments have long running times

10. Thomas Jefferson National Accelerator Facility Page 10 Physics LRP December 8, 2011 Glueballs and hybrid mesons 5/10/201010Seminar - Argonne National Laborator y Defines Beam Energy : 12 GeV

11. Thomas Jefferson National Accelerator Facility Page 11 Physics LRP December 8, 2011 Hall D “GlueX” Experiment Lead Glass Solenoid Target Cerenkov Counter (future) Time of Flight Barrel Calorimeter Upstream Veto 12 GeV Electron Beam Photons Bremsstrahlung Tagger Diamond Crystal Tracking Scope matches 12 GeV Upgrade technical performance requirements

12. Thomas Jefferson National Accelerator Facility Page 12 Physics LRP December 8, 2011 Deeply Virtual Exclusive Processes - Kinematics Coverage of the 12 GeV Upgrade JLab Upgrade Upgraded JLab has complementary & unique capabilities unique to JLab overlap with other experiments High x B only reachable with high luminosity H1, ZEUS

13. Thomas Jefferson National Accelerator Facility Page 13 Physics LRP December 8, 2011 Quark Structure of Nuclei (Nucleons and Pions) or (Quarks and Gluons)? Not a simple convolution of free nucleon structure with Fermi motion In nuclear deep-inelastic scattering, look directly at the quark structure of nuclei Counts/hour/ (100 MeV) 2 (100 MeV 2 ) for L=10 35 cm -2 sec -1 12 GeV Upgrade Provides Substantially Enhanced Access to the DIS Regime with enough luminosity to reach the high-Q 2, high-x region!

14. Thomas Jefferson National Accelerator Facility Page 14 Physics LRP December 8, 2011 Hall C “SHMS” SHMS HMS Shield House for Detectors Detector Package Inside Shield House Three Superconducting Quadrupole Magnets SC Dipole Magnet Scope matches 12 GeV Upgrade technical performance requirements Horizontal Bender

15. Thomas Jefferson National Accelerator Facility Page 15 Physics LRP December 8, 2011 SHMS Detectors in Shield House Dipole NG Cerenkov Wire Chambers HG Cerenkov S1X S1Y S2X S2Y Aerogel Calorimeter 116 cm

16. Thomas Jefferson National Accelerator Facility Page 16 Physics LRP December 8, 2011 PRESENT HALL A - SCHEMATIC VIEW

17. E12-06-114: DVCS at 11 GeV in Hall A JLab12 with 3, 4, 5 pass beam (6.6, 8.8, 11.0 GeV) 88 days 250 k events/setting JLab @ 6 GeV  Absolute cross-section measurements  Test of scaling  Increased kinematical coverage Well described by leading twist contribution Significant deviation from Bethe-Heitler Results from E00-110: Upgraded PbF 2 calorimeter built and tested

18. Thomas Jefferson National Accelerator Facility Page 18 Physics LRP December 8, 2011 CLAS12 Detectors Silicon Vertex Tracker Central Time of Flight Solenoid High Threshold Cerenkov 3 Regions of Drift Chambers Torus 3 Panels of Time of Flight – 1a & 2 reused from CLAS Low Threshold Cerenkov – Reused from CLAS Electromagnetic Calorimeter – Reused from CLAS Pre-Shower Calorimeter

19. Thomas Jefferson National Accelerator Facility Page 19 Physics LRP December 8, 2011 CLAS12 Experiments – Optimal Running ProposalPhysicsContactRatingDaysGroupall equipment available day 1 EnergyGroupTarget E12-07-104Neutron magnetic form factorG. GilfoyleA-30 90 Neutron detector RICH IC11A liquid D 2 target PR12-11-109 (a)Dihadron DIS productionAvakian E12-09-007aStudy of partonic distributions in SIDIS kaon productionK. HafidiA-56 E12-09-008Boer-Mulders asymmetry in K SIDIS w/ H and D targetsM. ContalbrigoA-TBA 11-003DVCS on neutron targetS. NiccolaiA90 E12-06-108Hard exclusive electro-production of π 0, ηP. StolerB80 119 RICH IC Forward tagger 11, 8.8, 6.6 B liquid H 2 E12-06-112Probing the proton’s quark dynamics in Semi-Inclusive pion production H. AvakianA60 E12-06-119Deeply Virtual Compton ScatteringF. SabatieA80 E12-09-103Excitation of nucleon resonances at high Q 2 R. GotheB+40 E11-005Hadron spectroscopy with forward taggerM. BattaglieriA-119 PR12-11-103DVMP of ρ, ω, φM. Guidal E12-06-106Color transparency in exclusive vector meson electroproduction off nuclei K. HafidiB+60 11CNucllear targets E12-06-117Quark propagation and hadron formationW. BrooksA-60 11DNuclear E12-10-102Free Neutron structure at large xS. BueltmanA40 Radial TPC11EGas D 2 E12-06-109Longitudinal Spin Structure of the NucleonS. KuhnA80 170 Polarized target RICH IC 11F NH 3 ND 3 E12-06- 119(b)DVCS on longitudinally polarized proton targetF. SabatieA120 E12-07-107Spin-Orbit Correl. with Longitudinally polarized targetH. Avakian103 PR12-11-109 (b)Dihadron studies on long. polarized targetH. Avakian E12-09-007(b)Study of partonic distributions using SIDIS K productionK. HafidiA-110 E12-09-009Spin-Orbit correlations in K production w/ pol. targetsH. AvakianA-103 PR12-11-109SIDIS on transverse polarized targetM. ContalbrigoTransverse target11GHD TOTAL run time1231 539

20. Thomas Jefferson National Accelerator Facility Page 20 Physics LRP December 8, 2011 Search for Gluonic Excitations The GlueX Detector Design has been driven by the need to carry out Amplitude analysis.  p X  n,p Photoproduction  1 → a + 1    → (     )(   ) →         h 0 → b o 1    → (   )  →      Final state particles  ± K ±  p n K L h’ 2 → K + 1 K − →  o K + K − →  +  − K + K −  1  1  ’ 1 b 2 h 2 h’ 2 b 0 h 0 h’ 0 all charged many photons strange particles 1 −+ 2+−2+− 0+−0+−

21. Thomas Jefferson National Accelerator Facility Page 21 Physics LRP December 8, 2011 Items Also Needed - In-Hand or TBA Existing –spectrometers – HMS, both HRS –Targets (H, D, 3 He, HD, …) (polarized) –Detectors – Big Bite, polarimeters, calorimeters Devices underway (in various stages) –Neutron detector, forward vertex, forward tagger –Aerogel Cerenkov, TOF slats, neutron polarimeter Devices foreseen –RICH for K/pi (Halls B & D) –Super BigBite –SOLID, Møller, other large experiments (! This is by no means exhaustive)

22. Thomas Jefferson National Accelerator Facility Page 22 Physics LRP December 8, 2011 Backup Slides

23. Thomas Jefferson National Accelerator Facility Page 23 Physics LRP December 8, 2011 Detectors Construction Cost Summary Experimental Equipment/Physics Cost Experimental Systems Experimental Systems by Sub-system

24. Thomas Jefferson National Accelerator Facility Page 24 Physics LRP December 8, 2011 Comparison of Major Costs: Halls D, B, and C Hall D Hall B Hall C existing magnet Most detectors funded through NSF/MRI grant and foreign contribution 2008 NSF/MRI grant approved for ~1/2 of PCal costs Part on WFO funds

25. Thomas Jefferson National Accelerator Facility Page 25 Physics LRP December 8, 2011 WBS 1.4 & 1.5 Construction Cost Summary IPR Oct 2011 (August 31, 2011 Data) WBSHalls EAC FY11$K Direct BAC Burdened & Escalated $K 1.4.1.Hall A508588 1.4.2.Hall B31,58133,941 1.4.3.Hall C22,93824,113 1.5.Hall D *38,59441,825 1.4 & 1.5Total93,621100,467 1.9.5, 1.9.7 WFO Hall D Detectors and Infrastructure5,2015,291 * Includes $8M Spare Solenoid