the long range plan for nuclear physics the lrp working group “after the big meeting” richard...

The Long Range Plan for The Long Range Plan for Nuclear PhysicsNuclear Physics

The LRP working groupThe LRP working group

““After the big meeting”After the big meeting”Richard SetoRichard Seto

University of CA, RiversideUniversity of CA, Riverside

RHIC-AGS User’s Group – Washington APS MeetingRHIC-AGS User’s Group – Washington APS Meeting

April 29, 2001April 29, 2001

4/29/01 APS RHIC-AGS User's Meeting R. Seto

What happens Every ~6 Years the DOE/NSF nuclear charges NSAC with

defining a ~5-10 year plan for nuclear physics Begins with Town meetings in all fields of Nuclear Physics

Low energy nuclear physics Astrophysics, Neutrinos, and Symmetries Relativistic Heavy Ions (we had several meetings) Electron scattering

NSAC(30 people)+30 other “wise folks” then get together for a week and hammer out a final set of recommendations (Santa-Fe: Jan 28-Feb 2, 2001) Chaired by James Symons

NSAC folks: Me, Tim Hallman, Wit Busza, Leslie Bland Wise folks: Barbara Jacak, Bill Zajc, Steve Vigdor, Larry McLerran, Al

Mueller, Peter Bond, Dave Herzog

~Oct 1


The money ~400M/year for DOE/NSF Nuclear Physics What was on the table at Santa Fe?

RIA – the decadal project ~$1B Mid size stuff ~$100M

JLAB-12 GeV Upgrade : gluonic excitations, GPD’s, intermediate Q2

ORLAND : from SNS Underground Lab : large scale double beta decay, proton decay, solar

Lots of support in community – gets an A+ Most of funding is from NSF Requested support of community Nuclear Science will construct some detectors

RHIC II EIC – electron ion collider

Small Stuff A fact of life

You want big money? – build something big : CEBAF, RHIC,…RIA


The LRP document Recommendations

Increased funding for research and facility operations

RIA (Rare Isotope Accelerator) The underground Lab JLAB 12 GeV upgrade

“Initiatives” Small stuff and big stuff including

RHIC/EIC R and D RHIC II


The recommendations Recommendation 1

Recent investments by the United States in new and upgraded facilities have positioned the Nation to continue its world-leadership role in nuclear science. The highest priority of the nuclear science community is to exploit the extraordinary opportunities for scientific discoveries made possible by these investments. Increased funding for research and facility operations is essential to realize these opportunities.

Specifically, it is imperative to Increase support for facility operations – especially our unique new

facilities RHIC, CEBAF, and NSCL – which will greatly enhance the impact of the nation’s nuclear science program.

Increase investment in university research and infrastructure, which will both enhance scientific output and educate additional young scientists vital to meeting national needs.

Significantly increase funding for nuclear theory, which is essential for developing the full potential of the scientific program.


RIA – the Rare Isotope Accelerator Recommendation 2

The Rare Isotope Accelerator (RIA) is our highest priority for major new construction. RIA will be the world-leading facility for research in nuclear structure and nuclear astrophysics.

The exciting new scientific opportunities offered by research with rare isotopes are compelling. RIA is required to exploit these opportunities and to ensure world leadership in these areas of nuclear science.

RIA will require significant funding above the nuclear physics base. This is essential so that our international leadership positions at CEBAF and at RHIC be maintained.


The underground Lab and the JLAB upgrade

Recommendation 3 We strongly recommend immediate

construction of the world’s deepest underground science laboratory. This laboratory will provide a compelling opportunity for nuclear scientists to explore fundamental questions in neutrino physics and astrophysics.

Recommendation 4 We strongly recommend the upgrade of

CEBAF at Jefferson Laboratory to 12 GeV as soon as possible.


The “initiatives” (in random order)

RHIC/EIC R and D Both for machine and detectors

Gamma Tracking (for RIA type experiments) Cold Neutrons (SNS) RHIC II Lattice QCD/Teraflops scale computing Super Nova Calculations ORLAND


What is in it for us? Increased funding for RHIC, for our

contracts, and for theory as first priority RIA built with new money

A clause protecting funding for RHIC R and D for RHIC II/electron-ion Collider,

machine (electron cooling) and detectors For our theory colleagues – Tera-flops

computing (Lattice+cascade codes etc) In the distance – RHIC II/EIC


A (risky) guess at a time line Now - 2001

R and D for RHIC II machine and detectors J-Lab ~ 2005

Formal proposal for RHIC II ~2005 Next LRP ~2007 RIA ~ 2010 (a reasonable guess)

RHIC II construction RHIC II ~2013(WAOG) “O for optimistic” Electron Ion Collider ~2015 (WAOG)


Time scale ~2010 Cost $1B (~$840M) Will reach previously

unstudied isotopes (r-process) Intensity ~100x greater than

any planned facility Science

Nuclear Astrophysics Structure of nuclei Precision tests of conservation

laws Applications

What is RIA?? An innovative new accelerator for rare exotic

nuclei

Stable isotopes

RIA

Unstable istopesUnstable istopes


The Science of RIAOne example: Nature of Nuclear Matter

What are the limits of stability?

I.e. how extreme can you go in N/Z (neutron drip line, proton drip line)

An example – When you go to very neutron

rich isotopes, the magic numbers probably change

This dictates the rates of various reactions in the r-process – the rapid neutron capture process

So what?


The Science of RIA – origin of the elements

Did you know that we are all children of the Stars?

Elements heavier than iron produced in the r-process We don’t understand it We don’t really know where it

occurs in super-nova? or perhaps in merging neutron

stars? We have not been able to

produce the most relevant nuclei

RIA will make these nuclei accessible


A very successful process

The Nuclear physics community has succeeded in constructing very large ($1B) projects CEBAF RHIC Now RIA/Underground lab

The community is a powerful one Broad (disparate) interests BUT UNIFIED!

Noted by OMB

I have come to admire the process, the leadership and the results

Despite some unhappiness at times during the meeting,


““We are stardust We are stardust We are golden We are golden

We are billion-year-old carbon We are billion-year-old carbon And we got to get ourselves Back to the And we got to get ourselves Back to the

garden”garden”Joni MitchellJoni Mitchell

the long range plan for nuclear physics the lrp working group “after the big meeting” richard...

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