Office of Science

U.S. Department of Energy

The Medium Energy Program

Outline:Program Overview

Some Recent ResultsFY 2008 Funding

Summary

Office of Science

U.S. Department of Energy

The Medium Energy Subprogram

Facilities: TJNAF – 12 GeV Upgrade @ CD-2

Support Seven Laboratory Research Groups: TJNAF 3 Hall Research Staff ANL: Medium Energy (TJNAF, Hermes, ATTA), HE (RHIC-spin) BNL: RHIC-spin LANL: MiniBooNe, RHIC-spin

Manage ~46 University grants ~ 100 Faculty / Research Staff ~ 45 Post Docs ~ 133 Graduate Students ~ 45 Undergraduate Students

Office of Science

U.S. Department of Energy

Medium Energy Science Program

QCD with Electron Beams: TJNAF MAMI Cornell GRAAL

QCD with Proton Beams: RHIC-spin program Fermilab Drell-Yan E906

Precision Measurements: ATTA (charge radius of 6,8He, EDM) The charge

radius for 8He has been measured for the first time @GANIL. Radius is smaller than for 6He and is consistent with a Green’s Function MC calculation.

MiniBooNe (sterile neutrino) results exclude LSND result, low energy excess (<475 MeV) is being studied, anti-data running will continue thru 2009.

nEDM several university groups participating

v

Office of Science

U.S. Department of Energy

Scientific Accomplishments: Nucleon Structure

Year Milestone Status

2008 Make measurements of spin carried by the glue in the proton with polarized proton-proton collisions at the center of mass energy, √sNN = 200 GeV.

Measurements at RHIC of ALL for inclusive jet and neutral production have been made which exclude large gluon polarization and are consistent with zero gluon polarization at √sNN = 200 GeV.

2008 Extract accurate information on generalized parton distribution functions for parton momentum fractions, x, from 0.1-0.4 , and –t < 0.5 GeV2 in measurements of DVCS.

Early measurements have been made at TJNAF with a simple extraction of the H GPD and data have demonstrated a sensitivity to the GPD.

2009 Complete the combined analysis of the available data on single , , and K photo-production of nucleon resonances and incorporate the analysis of two-pion final states into the coupled channel resonance analysis

Large data set collected over the past few years in Hall B at TJNAF. Presently collecting polarized data. Analysis requires significant coordination with theory which is underway. Excited Baryon Analysis Center established at TJNAF in 2006.

2010 Determine the four EM form factors of the nucleons to Q2 < 3.5 GeV2 and separate the electroweak form factors into u,d and s quarks for Q2 < 1 GeV2.

EM form factors have been measured out to Q2 of 4 GeV2. With the completion of the G0 and HAPPEX III experiments, the flavor separation should be completed by 2010.

2011 Measure the lowest moments of the unpolarized structure functions (both l and t) to 4 GeV2 and the DIS polarized structure functions (g1, g2) in the range 0.2< x < 0.6 and 1< Q2 < 5 GeV2 for p and n.

Q2 evolution of the GDH sum rule (Q2 < 3 GeV2) and measurements of A1 (x < 0.6, Q2 = 5 GeV2) have been made for both the proton and neutron.

H~

Office of Science

U.S. Department of Energy

Medium Energy Budget Breakout

FY06 Del FY07 Del FY08

ME Total Funding ($M) 107.6 12.2% 120.7 4.1% 125.7

Research Funding ($M) 30.5 9.8% 33.5 -2.3% 32.7

University Research 15.7 10.4% 17.4 1.8% 17.7

QCD w/ Electrons 9.5 11.8% 10.6 2.6% 10.9

QCD w/ Protons 3.7 16.5% 4.3 0.0% 4.3

Prec. Measurements 0.6 -16.4% 0.5 7.8% 0.5

MIT R&E Center 2.0 0.0% 2.0 0.0% 2.0

Laboratory Research 14.8 9.1% 16.1 -6.8% 15.0

QCD w/ Electrons 9.5 3.8% 9.9 -8.1% 9.1

QCD w/ Protons 3.2 27.0% 4.0 -7.5% 3.7

Prec. Measurements 2.1 6.3% 2.2 0.0% 2.2

CEBAF Operations ($M) 68.6 5.8% 72.6 -1.7% 71.4

12 GeV Upgrade 0.5 7.0 13.4

Bates Operations ($M) 2.5 2.0 2.0

Total Research Funding by Topic

Precision Measurements,

$2.70, 8%

QCD w/ Protons,

$7.80, 24%

QCD w/ Electrons, $20.0,

62%

R&E Center,

$2.00, 6%

Office of Science

U.S. Department of Energy

FY07 Grant Funding Profiles

Medium Energy Grant Size

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Funding (k$)

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Medium Energy Funding/Faculty

0

2

4

6

8

10

12

0 50 100 150 200 250 300 350 400 450 500 550 600

Funding/Faculty (k$)

# o

f G

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Medium Energy Funded Faculty

0

5

10

15

20

25

30

1 2 3 4 5 6

# of Faculty/Grant

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f G

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Office of Science

U.S. Department of Energy

Summary

• FY2008 research funding down by ~2.3% compared to FY2007; but grants and most lab groups maintained at FY2007 funding levels.

•FY2009 research funding will be bleak if we have a year long CR.

•Brad Plaster from the University of Kentucky was one of three OJI award winners this year for his work on nEDM!