thomas jefferson national accelerator facility page 1 physics lrp december 8, 2011 glenn r. young...

Thomas Jefferson National Accelerator Facility

Physics LRP December 8, 2011

Glenn R. Young

Experimental Nuclear Physics Division Town MeetingJefferson Lab

December 8, 2011

12-GeV Upgrade“<5 years” Scientific Program



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



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



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



Detector Performance Requirements

Hall D Hall B Hall C Hall A

excellent hermeticity

luminosity 1035

energy reach installation space

polarized photons hermeticity precision

Eg~8.5-9 GeV 11 GeV beamline

108 photons/s target flexibility

good momentum/angle resolution excellent momentum resolution

high multiplicity reconstruction luminosity up to 1038

particle ID



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



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!



12 GeV Approved Experiments by Physics Topics

E12-11-105 has not been counted with the experiments since it is considered a test



12 GeV Approved Experiments by PAC Days

• Hall B has substantial parallel running• Hall A PV experiments have long running times



Glueballs and hybrid mesons

5/10/201010 Seminar - Argonne National

Laboratory

DefinesBeam

Energy :12 GeV



Hall D “GlueX” Experiment

Lead Glass

Solenoid

Target CerenkovCounter (future)

Time ofFlight

BarrelCalorimeter

Upstream Veto

12 GeV Electron Beam

PhotonsBremsstrahlung

Tagger

DiamondCrystal

Tracking

Scope matches 12 GeV Upgrade technical performance requirements



Deeply Virtual Exclusive Processes - Kinematics Coverage of the 12 GeV Upgrade

JLab Upgrade

Upgraded JLab hascomplementary& unique capabilities

unique to JLaboverlap with other experiments

High xB only reachablewith high luminosity H1, ZEUS



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 MeV2) for

L=1035 cm-2 sec-1

12 GeV Upgrade Provides Substantially Enhanced Access to the DIS Regimewith enough luminosity to reach the high-Q2, high-x region!



Hall C “SHMS”

SHMS

HMS

Shield House for Detectors

Detector PackageInside Shield House

Three Superconducting Quadrupole Magnets

SC Dipole Magnet

Scope matches 12 GeV Upgrade technical performance requirements

Horizontal Bender



SHMS Detectors in Shield House

DipoleNG Cerenkov

Wire Chambers

HG Cerenkov

S1X S1Y

S2X S2Y

Aerogel

Calorimeter 116 cm



Differe

nt colors

for upgra

ded sy

stemsHigh Resolution

Spectrometers

Møller Polarimeter

Compton Polarimeter&

Arc Energy Measurement

PRESENT HALL A - SCHEMATIC VIEW

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/settingJLab @ 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 PbF2 calorimeter

built and tested



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



CLAS12 Experiments – Optimal Running Proposal Physics Contact Rating Days Group all equipment

available day 1Energy Group Target

E12-07-104 Neutron magnetic form factor G. Gilfoyle A- 30

90

Neutron detectorRICHIC 11 A

liquidD2 target

PR12-11-109 (a) Dihadron DIS production Avakian

E12-09-007a Study of partonic distributions in SIDIS kaon production K. Hafidi A- 56

E12-09-008 Boer-Mulders asymmetry in K SIDIS w/ H and D targets M. Contalbrigo A- TBA

11-003 DVCS on neutron target S. Niccolai A 90

E12-06-108 Hard exclusive electro-production of π0, η P. Stoler B 80

119

RICHICForward tagger

11, 8.8, 6.6 B

liquidH2

E12-06-112 Probing the proton’s quark dynamics in Semi-Inclusive pion production

H. Avakian A 60

E12-06-119 Deeply Virtual Compton Scattering F. Sabatie A 80

E12-09-103 Excitation of nucleon resonances at high Q2 R. Gothe B+ 40

E11-005 Hadron spectroscopy with forward tagger M. Battaglieri A- 119

PR12-11-103 DVMP of ρ , ω, φ M. Guidal

E12-06-106 Color transparency in exclusive vector meson electroproduction off nuclei

K. Hafidi B+ 60 60 11 C Nuclleartargets

E12-06-117 Quark propagation and hadron formation W. Brooks A- 60 60 11 D Nuclear

E12-10-102 Free Neutron structure at large x S. Bueltman A 40 40 Radial TPC 11 E Gas D2

E12-06-109 Longitudinal Spin Structure of the Nucleon S. Kuhn A 80

170

Polarized targetRICHIC

11 F

NH3ND3

E12-06- 119(b) DVCS on longitudinally polarized proton target F. Sabatie A 120

E12-07-107 Spin-Orbit Correl. with Longitudinally polarized target H. Avakian 103

PR12-11-109 (b) Dihadron studies on long. polarized target H. Avakian

E12-09-007(b) Study of partonic distributions using SIDIS K production K. Hafidi A- 110

E12-09-009 Spin-Orbit correlations in K production w/ pol. targets H. Avakian A- 103

PR12-11-109 SIDIS on transverse polarized target M. Contalbrigo Transverse target 11 G HD

TOTAL run time 1231 539


Page 21


Items Also Needed - In-Hand or TBA

• Existing– spectrometers – HMS, both HRS– Targets (H, D, 3He, 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)


Page 22


Backup Slides


Page 23


Detectors Construction Cost Summary

Experimental Equipment/Physics Cost

Experimental Systems Experimental Systems by Sub-system

(FY11$K Direct)Construction 93,621


Page 24


Magnets

Detectors

Computing

Fast Electronics

Beamline

Infrastructure

Magnets

Detectors

Computing

Fast Electronics

Beamline InfrastructureSolenoid

Detectors

Computing

Electronics

Beamline

Infrastructure

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


Page 25


WBS 1.4 & 1.5 Construction Cost Summary

IPR Oct 2011 (August 31, 2011 Data)

WBS Halls

EAC FY11$K Direct

BAC Burdened & Escalated $K

1.4.1. Hall A 508 588

1.4.2. Hall B 31,581 33,941

1.4.3. Hall C 22,938 24,113

1.5. Hall D * 38,594 41,825

1.4 & 1.5 Total 93,621 100,467

1.9.5, 1.9.7

WFO Hall D Detectors and Infrastructure 5,201 5,291

* Includes $8M Spare Solenoid

thomas jefferson national accelerator facility page 1 physics lrp december 8, 2011 glenn r. young...

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