Jefferson Lab Status Bob McKeown July 17, 2015

2 April 2015 Outline 12 GeV Project and Commissioning PAC Budgets and Schedule LERF Planning MOLLER, SoLID status MEIC Outlook

3 April GeV Upgrade Project New Hall Add arc Enhanced capabilities in existing Halls Add 5 cryomodules 20 cryomodules Upgrade arc magnets and supplies CHL upgrade Completion of the 12 GeV CEBAF Upgrade was ranked the highest priority in the 2007 NSAC Long Range Plan. Upgrade is designed to build on existing facility: vast majority of accelerator and experimental equipment have continued use. Maintain capability to deliver lower pass beam energies: 2.2, 4.4, 6.6…. Project Scope (~94% complete) : Doubling the accelerator beam energy - DONE New experimental Hall D and beam line - DONE Civil construction including Utilities - ~98% Upgrades to Experimental Halls B & C - ~85% TPC = $338M ETC = ~$22M

4 April 2015 Polarized ρ Production with the Hall D Photon Beam

5 April 2015 Heavy Photon Search 5 HPS tracked pairs Engineering run in Hall B CE from DOE-HEP

6 April 2015 Power Outage Event March 24, 4PM JLab site lost power due to off-site event Power restored after a few hours, both CHL-1 and CHL-2 stable at 4K Encountered difficulties restarting 2K cold boxes on CHL-1 and CHL-2 CHL-2 warmup to remove contamination restored functionality CHL-1 has a failed compressor Reconfigured cryoplant to use CHL-2 to cool both LINACs and attempt to restore beam at lower energy (~5.5 GeV) Run extended for HPS until May 18 Received spare compressor drive unit from SNS – installation in progress. Damaged compressor sent to factory for assessment.

7 April Summer Shutdown May-June: CHL-1 maintenance (UIM project), need CHL-2 on to keep CEBAF cool June-Oct.: CHL-2 warranty repair by vendor, CHL-1 used for CEBAF LINACs at 2K for He processing (gradient maintenance) Restart in October – emphasis on 12 GeV beam development and multi-hall beam delivery

8 April 2015 Beam Time Request We will schedule Jan – Dec and Jan Jun 2017 (tentative). Construction of experiment components must be nearly complete and layout and experiment design frozen. CLAS12 construction has priority in Hall B.

9 April 2015

10 April 2015 PAC43 10 Scheduled for July 28-August 1 Proposals were due June 2 Charge: Review new proposals, previously conditionally approved proposals, and letters of intent for experiments that will utilize the 12 GeV upgrade of CEBAF and provide advice on their scientific merit, technical feasibility and resource requirements. Identify proposals that represent high quality physics within the range of scientific importance represented by the previously approved 12 GeV proposals and recommend for approval. Also provide a recommendation on scientific rating and beam time allocation for proposals newly recommended for approval. Identify other proposals with physics that have the potential for falling into this category pending clarification of scientific and/or technical issues and recommend for conditional approval. Provide comments on technical and scientific issues that should be addressed by the proponents prior to review at a future PAC. 8 new proposals 2 new parallel experiments 7 Letters of Intent

11 April 2015 PAC43 Results NUMBERTITLE CONTACT PERSON HALL DAYS REQUESTED DAYS AWARDED SCIENTIFIC RATE PAC DECISION PR Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering N. SparverisC15C2 PR The sidereal time variations of the Lorentz force and maximum attainable speed of electrons B. WojtsekhowskiAcc3.5Defer PR Polarization Observables in Wide-angle Compton Scattering at Photon Energies up to 8 GeV B. WojtsekhowskiA15Defer PR Deeply virtual Compton scattering on the neutron with a longitudinally polarized deuteron target S. NiccolaiB125C2 PR Measurements of the Quasi-Elastic and Elastic Deuteron Tensor Asymmetries E. LongC44.3C2 PR Measurement of Tagged Deep Inelastic ScatteringC. KeppelA27 A- C1 PR Measurements of the Charge and Magnetic Form Factors of the Triton at Large Momentum Transfers G. PetratosA10Defer PR A study of the Lambda-N interaction through the high precision spectroscopy of Lambda-hypernuclei with electron beam S. N. NakamuraA73C2/D

12 April 2015 CEBAF Operations Budget ONP Guidance/ FY16 President’s Budget Request supports ~ 16 weeks running ONP increased its projected out-year allocations to correspond to ~27/28 weeks of operations In 2017, with 12 GeV Beam commissioning, total will be ~30 weeks We were moderately pleased with the outlook for We have sought extra funding to augment our FY16 operations by a few weeks

13 April 2015 Federal Budget (M$) FY15FY16 Pres.FY16 HouseFY16 Senate Total NP CEBAF ops Weeks We wanted 109M to get 25 weeks of operations in FY16.

14 April 2015 Additional Experimental Equipment Super BigBite Spectrometer (FY13-17 construction) - High Q 2 form factors - SIDIS MOLLER experiment (MIE – FY17-19?) - Standard Model Test – DOE science review (September 2014) – strong endorsement - Technical, cost & schedule reviews? SoLID - SIDIS and PVDIS - Chinese collaboration - CLEO Solenoid - Director’s review (Feb. 2015) → lots of good feedback

15 April 2015 JLab MEIC Figure 8 Concept Initial configuration: 3-10 GeV on GeV ep/eA collider Optimized for high ion beam polarization:  polarized deuterons Luminosity:  up to few x e-nucleons cm -2 s -1 Low technical risk Upgradable to higher energies 250 GeV protons + 20 GeV electrons Flexible timeframe for Construction consistent w/running 12 GeV CEBAF Thorough cost estimate completed presented to NSAC EIC Review Cost effective operations  Fulfills White Paper Requirements Current Activities Site evaluation (VA funds) Accelerator, detector R&D Design optimization Cost reduction EIC at Jefferson Lab 15

16 April 2015 MEIC Baseline Design Features: Collider ring circumference: ~2100 m Electron collider ring and transfer lines : PEP-II magnets, RF (476 MHz) and vacuum chambers Ion collider ring: super-ferric magnets Booster ring: super-ferric magnets SRF ion linac 16

17 April 2015 Summary and Outlook 12 GeV Upgrade making good progress – challenges remain Experiments on the floor are doing well SBS making good progress Trying to move MOLLER and SoLID along EIC science and designs are making good progress Awaiting results from NSAC Long Range Plan