nuclear science
DESCRIPTION
Nuclear Science. in the United States. The Core of Matter. The Fuel of Stars. The Big Questions. What is the structure of the nucleon?. What is the structure of nucleonic matter?. What are the properties of hot nuclear matter?. What is the nuclear microphysics of the universe?. - PowerPoint PPT PresentationTRANSCRIPT
Nuclear Science
Curtis A. Meyer
Nuclear Science
in the United States
The Core of Matter
The Fuel of Stars
Nuclear Science
Curtis A. Meyer
The Big QuestionsWhat is the structure of the nucleon?
What is the structure of nucleonic matter?
What are the properties of hot nuclear matter?
What is the nuclear microphysics of the universe?
What is the new standard model?
Nuclear Science
Curtis A. Meyer
Structure of the nucleon?
What is the
protons and neutrons built from quarks
Mesons built from quarks and antiquarks
Flux
tube
forms
between
QCD
Medium Energy Physics
Why are quarks confined?Are there strange quarks in the proton?What are the properties of the quarks inside the nucleon?
Nuclear Science
Curtis A. Meyer
What is the
Build up atomic nuclei from protons and neutrons
structure of nucleonic
matter?
When are quarks important and when are protons and neutrons important?Can we understand the properties of nuclei from first principle calculations?
What species exists and are stable?
Nuclear Science
Curtis A. Meyer
Hot Nuclear Matter
What are the properties of
Quark-Gluon Plasma – a new form of matter
Relativistic Heavy Ions
Nuclear Science
Curtis A. Meyer
What is the
How are the elements created? Supernovae calculations
nuclear microphysicsof the universe?
Traditional Nuclear PhysicsSearch for new elementsProperties of elements far from stability. supernova calculations.
The core of neutron stars?
Nuclear Science
Curtis A. Meyer
the new standard model?
What is
Neutrinos have mass.
u c td s b (quarks)
e (leptons)e
SNO Experiment
muon g-2
Precision Experiments tolook for deviations from thestandard model
Nuclear Science
Curtis A. Meyer
Carnegie Mellon Faculty
Gregg Franklin Curtis Meyer
Reinhard SchumacherBrian Quinn
EXPERIMENT THEORYLen Kisslinger
Colin Morningstar
Medium Energy Physics
Nuclear Science
Curtis A. Meyer
Sources of Funding
Department of Energy -- Office of Science - Nuclear and High Energy Physics - Nuclear Physics ~ $385,000,000.00 per year
National Science Foundations - Mathematical and Physical Sciences - Physics - Nuclear Physics ~ $ 45,000,000.00 per year
Nuclear Science
Curtis A. Meyer
The Facilities
Relativistic HeavyIon Collider at BNL
RHIC
Jefferson Lab
Smaller University Based LabsMIT – Bates LabMichigan State – CyclotronDuke – TandemBerkeley - Cyclotron
Electron accelerator
Nuclear Science
Curtis A. Meyer
Big DecisionsNSAC Nuclear Science Advisory Committee
Reports to both DOE and NSF
This letter requests that the DOE/NSF Nuclear Science Advisory Committee (NSAC) conduct anew study of the opportunities and priorities for U.S. nuclear physics research and recommend along range plan that will provide a framework for coordinated advancement of the nation’s nuclear research programs over the next decade.
The Charge:
The 2001 Committee MeetingThe Report
Nuclear Science
Curtis A. Meyer
Town Meetings
The planning process is organized around a series of“town meetings”
October 2000 Berkeley Meeting on Traditional Nuclear PhysicsOctober 2000 Oakland Meeting on Fundamental SymmetriesDecember 2000 Jefferson Lab Meeting on Hadronic and Electromagnetic PhysicsJanuary 2001 Brookhaven Meeting on Heavy Ion Physics
Each meeting produced a “white paper” with specificrecommendations.
Nuclear Science
Curtis A. Meyer
The LRP Meeting
April 2001, the NSAC LRP Committee meets anddiscusses all of the reports from the Town Meetings
Developed a set of 4 recommendations, and a list ofopportunities.
1. Maintain world leadership in areas of strength.2. Build the Rare Isotope Accelerator3. Support the NSF to build an underground lab.4. Upgrade Jefferson Lab as quickly as possible.
Nuclear Science
Curtis A. Meyer
The GlueX Poster
How does the community decidewhat is importantand what is not?
How do decisionsget made about expensive facilitiesand experiments?
Nuclear Science
Curtis A. Meyer
Making the Case
How do big projectsget supported and funded?
The Search for QCD ExoticsParticles predicted by the theory of quantum chromodynamicshelp explain why the fundamental building blocks of matter areimpossible to isolate.
Nuclear Science
Curtis A. Meyer
Flux Tubes
Color Field: Because of self interaction, confining flux tubes form between static color charges
Notion of flux tubes comes about from model-independentgeneral considerations. Idea originated with Nambu in the ‘70s
and ConfinementFlux Tubes
Flux
tube
forms
between
Nuclear Science
Curtis A. Meyer
ground-state flux-tube
excited flux-tube
Gluonic Excitations provide anexperimental measurement of the excited QCD potential.
Observations of exotic quantum number nonets are thebest experimental signal of gluonic excitations.
QCD Potential
Nuclear Science
Curtis A. Meyer
The IdeaWhy
Photoproduction
A pion or kaon beam, when scattering occurs,
can have its flux tube excitedor
beam
Quark spins anti-aligned
Much data in hand with some evidence for gluonic excitations
(tiny part of cross section)
q
q
befo
req
qaft
er
q
q
aft
er
q
q
befo
re
beamAlmost no data in hand
in the mass regionwhere we expect to find exotic hybrids
when flux tube is excited
Quark spins aligned
__
__
Nuclear Science
Curtis A. Meyer
The Upgrade
In order to be able to carry out the experiment, it Is necessary to double the energy of the JeffersonLab Accelerator from 6GeV to 12 GeV.
With this higher energy, there are new physics Opportunities in the existing experimental halls.
The other physics cases complement the flagshipPhysics to be carried out in GlueX.
The total project cost is estimated at $250,000,000. Accelerator Upgrade ~ 50% GlueX ~ 20% Other Physics ~ 30%
Nuclear Science
Curtis A. Meyer
The Whole Picture
CHL-2CHL-2
Upgrade magnets Upgrade magnets and power and power suppliessupplies
Nuclear Science
Curtis A. Meyer
Developing the Physics
July 1997 - Workshop at Indiana University Explore Community InterestNovember 1997 – Workshop at NCSU Explore the Physics Interest and FeasibilityMarch 1998 - Workshop at Carnegie Mellon Explore Potential Detector DesignsMay 1998 - WorkFest at Indiana University Begin Simulation of Physics and DetectorsJune 1998 - Presentation to the JLab User’s Group Public Presentation to the JLab CommunitySeptember 1998 – Workshop at Florida State Univ. Continues Exploration of the Physics and Detectors Hall D Preliminary Design Report 170 pages
Nuclear Science
Curtis A. Meyer
Making the Science Case
January 1999 - Presentation to the JLab PAC Initial Review of the Science by an external CommitteeMarch 1999 - Workshop at RPI COLLABORATION FORMED Officially organize as an experiment – The HallD ExperimentAugust 1999 - Collaboration Meeting at Jefferson Lab Hall D Design Report, Version 2 191 PagesDecember 1999 - Collaboration Meeting at Jefferson Lab Prepare for the external reviewDecember 1999 - EXTERNAL REVIEW OF THE PROJECT The first significant review of the project, an external committee reviews things for 2 days.
Nuclear Science
Curtis A. Meyer
Preparing for NSACJanuary 2000 - Report of the Cassell Committee VERY POSITIVEMarch 2000 - Meeting with DOE and NSF in DCApril 2000 - Collaboration Meeting at Indiana University Solidify the Science Case. Educate the CommunityAugust 2000 - Collaboration Meeting at Jefferson Lab September 2000 – American Scientist ArticleOctober 2000 - The APS DNP MeetingThe Duck Workshop on Key Questions in Hadronic Physics Hall D Design Report: Version 3December 2000 - The NSAC Town Meeting at JLabJanuary 2001 - New Administration Sworn in – Pres. BushMarch 2001 - Collaboration Meeting at Jefferson LabApril 2001 - The NSAC Long Range Plan Meeting
During the 2000 year, there were a large number of seminarsand colloquia given on the physics of Hall D.
Nuclear Science
Curtis A. Meyer
The JLab Upgrade and HallD were one of four recommendationsthat came out of the NSAC Meeting.
June 2001 - Collaboration Meeting at Jefferson Lab The collaboration begins the push for Critical Decision 0October 2001 - Collaboration Meeting at Indiana Univ.March 2002 - Collaboration Meeting at Jefferson Lab New Name: The GlueX Collaboration President Bush appoints Raymond Orbach to head the DOE office of Science. April 2002 The Long Range Plan is PublishedJune 2002 - Meeting with Raymond Orbach in D.C. July 2002 - JLab Science and Technology Review Review Carried out by DOE Nuclear PhysicsAugust 2002 - JLab Institutional Review Review Carried out by Raymond OrbachNovember 2003 - Release of 20-year Science Plan Expecting a CD0 to be granted in December of 2003
After NSAC
Nuclear Science
Curtis A. Meyer
After CD0
CD0 is the first of 5 Critical Decisions, CD4 is the start of physics. CD0 opens the door for money directly from Washington to be spent on the project.
This project is mature enough that we expect that the next step, CD1 will be about 1 year after CD0 is granted.
Nuclear Science
Curtis A. Meyer
ScienceIf things stay on track, we expect that we will starttaking data in 2009 -- 12 years from the first meetings.
Building Jefferson Lab was the top recommendation ofThe 1976 LRP, the lab started physics in 1994.
RHIC was the top priority of the 1982 plan. Physics Started in 2000.
Decisions for big projects are well thought out andhave strong community support.