Future Plans at Jefferson Lab: 12 GeV Upgrade and ELIC Allison Lung Jefferson Lab DIS 2008 University College London April 8, 2008
OUTLINE • 12 GeV Upgrade: – Jefferson Lab Today and Tomorrow – Highlights of Science Program – Project Status • ELIC: – Joint EIC Development – Jefferson Lab Science Beyond 12 GeV Upgrade – ELIC Design Approach – Next Steps • eRHIC talk (B. Surrow)
Jefferson Lab Today 2000 member international user community engaged in exploring quark- gluon structure of matter Superconducting accelerator provides 100% duty factor beams of unprecedented quality, with C B A energies up to 6 GeV CEBAF’s innovative design allows delivery of beam with unique properties to three experimental halls simultaneously Each of the three halls offers complementary experimental capabilities and allows for large equipment installations to extend scientific reach
Jefferson Lab Today Hall B Hall A Two high-resolution Large acceptance spectrometer 4 GeV spectrometers electron/photon beams Hall C A C B 7 GeV spectrometer, 1.8 GeV spectrometer, large installation experiments
12 11 6 GeV CEBAF Upgrade magnets Upgrade magnets and power and power supplies supplies CHL- -2 2 CHL Two 0.6 GV linacs 1.1 Enhanced capabilities Lower pass beam energies in existing Halls still available Page 5 Page 5
WBS 1.6.3 Hall D Complex (Rendering) Service Building Hall D Photon Beam Dump Cryo Plant Tagger Area Counting House N Thomas Jefferson National Accelerator Facility Page 6 Hall D Calo Rev Feb 19, 2008
Overview of Upgrade Technical Performance Requirements Hall D Hall B Hall C Hall A excellent luminosity energy reach installation hermeticity space 10 x 10 34 polarized photons hermeticity precision ∼8.5−9 GeV E γ 11 GeV beamline 10 8 photons/s target flexibility good momentum/angle resolution excellent momentum resolution high multiplicity reconstruction luminosity up to 10 38 Thomas Jefferson National Accelerator Facility particle ID Page 7 Operated by the Southeastern Universities Research Association for the U.S. Department of Energy
12 GeV Capabilities Hall D – – exploring origin of confinement confinement by Hall D exploring origin of by studying exotic mesons exotic mesons studying Hall B – Hall B – understanding nucleon structure understanding nucleon structure via via generalized parton parton distributions generalized distributions Hall C – – precision determination of valence quark valence quark Hall C precision determination of properties in nucleons and nuclei properties in nucleons and nuclei Hall A – Hall A – short range correlations, form factors, short range correlations, form factors, hyper- -nuclear physics, future nuclear physics, future new experiments hyper new experiments
International & NSF & State: Non-DOE Hardware Contributions Red = proposed Green = confirmed • International: – EU Proposal: Hall B Central Detector – NIKHEF/Armenia: HERMES lead glass blocks – Canada NSERC: • Hall D Barrel Calorimeter (partial labor) • Hall C Gas Cerenkov • National Science Foundation (NSF): – Hall C Detector System – Hall B Central Time-of-Flight Detector • Commonwealth of Virginia: – Hall D Complex: civil construction
Highlights of the 12 GeV Science Program • Unlocking secrets of QCD: quark confinement • New and revolutionary access to the structure of the proton and neutron • Discovering the quark structure of nuclei • High precision tests of the Standard Model DIS 2008 Talks: S. Niccolai (Orsay): GPDs P. Souder (Syracuse): Parity Violating DIS
Gluonic Excitations and the Origin of Confinement QCD predicts a rich spectrum of as yet to be discovered gluonic excitations - whose experimental verification is crucial for our understanding of QCD in the confinement regime. With the upgraded CEBAF, a linearly polarized photon beam, and the GlueX detector, Jefferson Lab will be uniquely poised to: - discover these states, - map out their spectrum, and - measure their properties
New, comprehensive view of hadronic structure
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, we look directly at the quark structure of nuclei 12 GeV Upgrade Provides Substantially Enhanced Access to the DIS Regime Counts/hour/ (100 MeV) 2 (100 MeV 2 ) for L=10 35 cm -2 sec -1
Measuring High-x Structure Functions REQUIRES: – High beam polarization – High electron current – High target polarization – Large solid angle spectrometers 12 GeV will access the regime (x > 0.3), where valence quarks dominate
The 12 GeV Upgrade Project: Compelling Physics Status and Schedule 12 GeV - $310M Total TPC - Jul-2007 70,000 60,000 50,000 Pre-Ops Construction 40,000 PED R&D $K CDR/ACD 30,000 20,000 10,000 - FY04 FY05 FY06 FY07 FY08 FY09 FY10 FY11 FY12 FY13 FY14 FY15 12 GeV PHYSICS FY07 FTEs BY MONTH 45 40 35 30 25 FTEs 20 15 10 5 - Oct-06 Nov-06 Dec-06 Jan-07 Feb-07 Mar-07 Apr-07 May-07 Jun-07 Jul-07 Aug-07 Sep-07
DOE Generic Project Timeline We are here ⎬ 1 year Nov 2007 Sept 2008
DOE Project Critical Decisions • CD-0 Approve Mission Need • CD-1 Approve Alternative Selection and Cost Range • Permission to develop a Conceptual Design Report • Defines a range of cost, scope, and schedule options • CD-2 Approve Performance Baseline • Fixes “baseline” for scope, cost, and schedule • Now develop design to 100% • Begin monthly Earned Value progress reporting to DOE • Permission for DOE-NP to request construction funds • CD-3 Approve Start of Construction • CD-4 Approve Start of Operations or Project Close-out
DOE CRITICAL DECISION SCHEDULE 12 GeV Upgrade CD-0 Mission Need MAR-2004 (A) CD-1 Preliminary Baseline Range FEB-2006 (A) CD-2 Performance Baseline NOV-2007 (A) CD-3 Start of Construction SEP-2008 CD-4A Accelerator Project Completion and DEC-2014 Start of Operations CD-4B Experimental Equipment Project JUN-2015 Completion and Start of Operations CD-4 split in two to ease transition into operations phase (A) = Actual Approval Date Thomas Jefferson National Accelerator Facility Page 18 DIS2008 April 8, 2008
12 GeV Upgrade: Phases and Schedule (based on baseline funding guidance approved by DOE-NP in Nov 2007) � 2004-2005 Conceptual Design (CDR) - finished � 2004-2008 Research and Development (R&D) - ongoing � 2006 Advanced Conceptual Design (ACD) - finished � 2006-2009 Project Engineering & Design (PED) - ongoing
12 GeV Upgrade: Phases and Schedule � 2009-2013 Construction – starts in ~ 6-9 months! � Parasitic machine shutdown – May 2011 through Oct 2011 (6 months) � Accelerator shutdown start mid-May 2012 � Accelerator commissioning mid-May 2013 � 2013-2015 Pre-Ops (beam commissioning) � Hall A commissioning start ~October 2013 � Hall D commissioning start ~April 2014 � Halls B and C commissioning start ~October 2014
CD-3 September ’08 Construction Start October ‘08 • Requirements • Finish remaining R&D • Develop all Designs to 80% to 100% maturity • July 22 nd - 24 th : Critical Decision 3 Review • SC Independent Project Review (IPR): conducted by Dan Lehman (DOE SC Office of Project Assessment) • JLab Program Advisory Committee • Two reviews to date of 12 GeV proposals – “commissioning experiments” • Key step in identifying the research interests and participation of international collaborators
12 GeV Upgrade Summary • Essential to address key questions in hadronic physics • Broad and diverse scientific program • Unique and complementary kinematic reach and capabilities • Strong opportunity for international collaboration • 12 GeV Project: Construction start in ~6-9 months • Critical Decision 2 in September 2007 (baseline) • Critical Decision 3 in September 2008 (construction start) • We are on track for accomplishing this!
Import v3
JLab Beyond 12 GeV Upgrade ELIC • EIC Evolution • Primary Science Goals • EIC in the NSAC 2007 Long Range Plan • Two Designs: ELIC / eRHIC schematics • Science Motivation • Expected research highlights • At turn-on • (e,p) and (e,A) • ELIC Accelerator Design • Design Goals • Design Features • Accelerator R&D • Summary – next steps
Science Motivation A High Luminosity, High Energy Electron-Ion Collider: A New Experimental Quest to Study the Glue which Binds Us All How do we understand the visible matter in our universe in terms of the fundamental quarks and gluons of QCD? Explore the new QCD frontier: strong color fields in nuclei � How do the gluons contribute to the structure of the nucleus? � What are the properties of high density gluon matter? � How do fast quarks or gluons interact as they traverse nuclear matter? Precisely image the sea-quarks and gluons in the nucleon � How do the gluons and sea-quarks contribute to the spin structure of the nucleon? � What is the spatial distribution of the gluons and sea quarks in the nucleon? � How do hadronic final-states form in QCD?
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