2 April 2015 Outline 12 GeV Project and Commissioning PAC
Budgets and Schedule LERF Planning MOLLER, SoLID status MEIC
Outlook
Slide 3
3 April 2015 12 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
Slide 4
4 April 2015 Polarized Production with the Hall D Photon
Beam
Slide 5
5 April 2015 Heavy Photon Search 5 HPS tracked pairs
Engineering run in Hall B CE from DOE-HEP
Slide 6
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.
Slide 7
7 April 2015 2015 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
Slide 8
8 April 2015 Beam Time Request We will schedule Jan. 2016 Dec.
2016 and Jan. 2017-Jun 2017 (tentative). Construction of experiment
components must be nearly complete and layout and experiment design
frozen. CLAS12 construction has priority in Hall B.
Slide 9
9 April 2015
Slide 10
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
Slide 11
11 April 2015 PAC43 Results NUMBERTITLE CONTACT PERSON HALL
DAYS REQUESTED DAYS AWARDED SCIENTIFIC RATE PAC DECISION
PR12-15-001Measurement of the Generalized Polarizabilities of the
Proton in Virtual Compton Scattering N. SparverisC15C2
PR12-15-002The sidereal time variations of the Lorentz force and
maximum attainable speed of electrons B. WojtsekhowskiAcc3.5Defer
PR12-15-003Polarization Observables in Wide-angle Compton
Scattering at Photon Energies up to 8 GeV B. WojtsekhowskiA15Defer
PR12-15-004Deeply virtual Compton scattering on the neutron with a
longitudinally polarized deuteron target S. NiccolaiB125C2
PR12-15-005Measurements of the Quasi-Elastic and Elastic Deuteron
Tensor Asymmetries E. LongC44.3C2 PR12-15-006Measurement of Tagged
Deep Inelastic ScatteringC. KeppelA27 A- C1 PR12-15-007Measurements
of the Charge and Magnetic Form Factors of the Triton at Large
Momentum Transfers G. PetratosA10Defer PR12-15-008A study of the
Lambda-N interaction through the high precision spectroscopy of
Lambda-hypernuclei with electron beam S. N. NakamuraA73C2/D
Slide 12
12 April 2015 CEBAF Operations Budget ONP Guidance/ FY16
Presidents 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 2017+ We
have sought extra funding to augment our FY16 operations by a few
weeks
Slide 13
13 April 2015 Federal Budget (M$) FY15FY16 Pres.FY16 HouseFY16
Senate Total NP595.5624.6616.2591.5 CEBAF ops97100100.2- Weeks2116
- We wanted 109M to get 25 weeks of operations in FY16.
Slide 14
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 - Directors review (Feb. 2015) lots of good
feedback
Slide 15
15 April 2015 JLab MEIC Figure 8 Concept Initial configuration:
3-10 GeV on 20-100 GeV ep/eA collider Optimized for high ion beam
polarization: polarized deuterons Luminosity: up to few x 10 34
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
Slide 16
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
Slide 17
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