NUCLEAR PHYSICS - Stony Brook University

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NUCLEAR PHYSICS - Stony Brook University

Experimental Nuclear Physics at Stony Brook

Past, Present, and Future

Prof. Gene D. Sprouse

Stony Brook


• Nov 24, 2006 4:00 pm Superconducting

LINAC completed its last experiment at

Stony Brook

• This is an opportune time to review the

history of the Van de Graaff and the

LINAC and the people involved in their

acquisition and operation, and to look into

the future a little.


1975

1966

Van de Graaff

1968

Superconducting

LINAC 1983


Department of Physics 1964

Bob

deZafra

Cliff

Swartz

Juliet

Lee-

Franzini

Arnie

Feingold

Peter

Kahn

Alec

Pond


Proposal for EN tandem Van

de Graaff to SUNY-Alec Pond


Van de Graaff proposal

s

person


Time Line for proposal

• 14 Dec 1962 Proposal prepared for EN (6MV) VdG.

• 24 Jan 1963 NSF issues positive report on Nuc. Physics,

proposing to double funding and make money

available to build facilities

• 13 Feb 1963 Provost Porter gets positive review


Time Line for proposal

• 14 Dec 1962 Proposal prepared for EN (6MV) VdG.

• 24 Jan 1963 NSF issues positive report on Nuc. Physics,

proposing to double funding and make money

available to build facilities

• 13 Feb 1963 Provost Porter gets positive review

• 15 April 1964 State Legislature appropriates $1.35M for

machine and ½ of the building,


Time Line for proposal

• 14 Dec 1962 Proposal prepared for EN (6MV) VdG.

• 24 Jan 1963 NSF issues positive report on Nuc. Physics,

proposing to double funding and make money

available to build facilities

• 13 Feb 1963 Provost Porter gets positive review

• 15 April 1964 State Legislature appropriates $1.35M for

machine and ½ of the building,

• 27 October 1964 NSF grant for ½ of building ($291k) approved.


Pond

Proposes

going for an

FN(King)

rather than an

EN(Standard).

This is known

as “bait and

switch”


Time Line for proposal

• 14 Dec 1962 Proposal prepared for EN (6MV) VdG.

• 24 Jan 1963 NSF issues positive report on Nuc.

Physics, proposing to double funding and make money

available to build facilities

• 13 Feb 1963 Provost Porter gets positive review

• 15 April 1964 State Legislature appropriates $1.35M

for machine and ½ of the building,

other ½ ($291k) from NSF funding.

• Jan 1 1965 First NSF research grant for $34,000

• Sept 1965 Lin Lee, Dave Fossan hired

• Sept 1966 Peter Paul, Bob Weinberg hired

• Oct 1966 Building started


October-10-1966 (view from top of Harriman Hall toward

Old Chemistry. Trees are site of Grad Chemistry building)


November-10-1966


December-5-1966


February-1-1967


February-1-1967


Completed Van de Graaff building

Trees at right rear of the building will become site of Grad Physics Building


Delivery of the Van de Graaff tank

We all live in a yellow submarine,

Yellow submarine, yellow submarine,

We all live in a yellow submarine,

Yellow submarine, yellow submarine,


Tank entering the building


Current picture of the Van de Graaff


Van deGraaff

Nuclear Experiment Facilities and Faculty 1965-2007

FACULTY

Robert Weinberg

Linwood Lee

David Fossan

Peter Paul

Robert McGrath

Gene Sprouse

65 66 67 68 69 70 71 72 73 74 75

resigned


Van de Graaff Physics Programs

Gamma Ray Spectroscopy Dave Fossan

Giant Dipole Resonance Peter Paul

Charged Particle Reactions Bob McGrath

Lin Lee

Nuclear moments and applications

to Solid State, Atomic Physics Gene Sprouse


Two PDP-9 computers from DEC, each costing $100,000. The “big”

machine had 16k 18 bit memory cells, and the “small” one 8k!


The machine ran 24-7, and we hired people

to operate the machine at night.


Dr. Dan Dietrich, Livermore.

(Metcalf student who did thesis

with van de Graaff)

Dr. Ron Chestnut,

CPE at SLAC

Dr. Phil Goldstone,

Los Alamos


The lab ski trip


Igloo 101


Fred Raab, head of the

LIGO Hanford Observatory

(Metcalf student)

Ehud Dafni, VP Business

Development, CMT

Prof. Steve Rolston,

Assoc. Chairman, Univ of

Md.

Prof. Partha Chowdhury,

Univ of Mass. Lowell


Prof. Gunter Schatz,

Univ. Konstanz

Dr. John Noe,

Laser Teaching Center


• Friedlander Panel on Future of Nuclear Science

NAS/NRC, 1975–77 recommends that two

University Van de Graaffs should get “booster

accelerators”

• Peter Paul motivates the group to compete for

one of these two.

• Collaboration initiated with Cal Tech to build a

superconducting LINAC at Stony Brook(We

could not buy LINAC like vdG)

• Paul and Sprouse stop physics research to

devote full time to the project


To expedite the transfer of the superconducting resonator

technology to Stony Brook, Sprouse spends a semester at

Cal Tech. Whose car is this??


Collaboration with Cal Tech to build

superconducting resonators


• There were competing development

proposals to NSF from:

– Stanford(Hanna, Glavish and Ben Zvi)

Stony Brook(Paul and Sprouse)

Stony Brook won!


Testing the Prototype superconducting

resonator with beam

Ilan BenZvi,

Director of the

Accelerator

Test Facility,

BNL


Next step: Test a prototype module

containing 3 resonators


What is the difference between these two proposals?


The advanced computer control system of the

accelerator was developed primarily by a PhD. Student

Dr. Alfred Scholldorf,

VP for development at Reuters


Joseph M. Brennan,

AGS Department, BNL


Mike Brennan and

Chen Chia-erh,

work on the beam sweeper

Chen later becomes

President of Beijing

University and President of

the Chinese Physical

Society


Linac room before


400 W Helium Refrigerator Installation

Professor Miriam

Rafailovich, Director,

Garcia Center,

Materials Science

Department, Stony

Brook


Helium gas storage tank delivery


Installation of Bob McGrath’s

scattering chamber “big mac”


Linac room before


Linac room after


• SCIENCE Volume 291, Number 5506, 9 Feb

2001, p. 962.

Copyright © 2001 by The American Association

for the Advancement of Science.

NUCLEAR PHYSICS:

Nuclei Crash Through The Looking-Glass

• David Voss

• Gloves do it. Toupees do it. Even twists of DNA

do it. And now, for the first time, physicists have

discovered that atomic nuclei come in right- and

left-handed models, too. In the 5 February issue

of Physical Review Letters (PRL), a team of

researchers from the State University of New

York (SUNY), Yale, the University of

Tennessee, and Notre Dame reports

observations of rapidly spinning nuclei morphing

into mirror-image forms. In the process, the

physicists also uncovered solid evidence that a

long-disputed feature of nuclear anatomy really

does exist.

Starosta, Fossan, Koike,

LaFosse, Beausang, and

Vaman


Lifetime(seconds)

Nuclear Lifetimes of Fr Isotopes

(work done with Luis Orozco, now at UMd.)

1.E+04

1.E+02

1.E+00

1.E-02

1.E-04

1.E-06

1.E-08

201

Made at Stony Brook Boulder

205

209

213

217

Isotope

221

225

229


Francium Atomic Level Scheme

(work done with Luis Orozco, now at UMd.)

9s

107.53±0.90 ns. 83.5±1.5 ns

8s

7s

53.48 +- 0.33 ns

149.3±3.5 ns

8p3/2 8p1/2 7p 3/2

21.02+-0.11 ns

7p 1/2

29.45+-0.11 ns

trapping transition

718 nm

67.7+-2.9 ns

7d5/2 7d3/2 73.60+-0.3 ns

6d 5/2

6d 3/2

Found at Stony

Brook

Still unknown


Dave Fossan Bob McGrath Gene Sprouse

Lin Lee Peter Paul


Aniko Paul Dot Lee Carolyn McGrath

Ann Fossan H’y Sprouse


DAVID B. FOSSAN (1934-2003)

21 Ph.D. students, 17 postdoctorates,

260 refereed publications

First recipient of “Chancellor’s Award for

Excellence in Research and Creative Activity”

1. Neutron Total Cross Sections of Be, 10B, B, C and O, D.B. Fossan and

R.L. Walter, W.E. Wilson and H.H. Barschall, Phys. Rev. 123, 209 (1961).

• 2. Differential Cross Sections for the T(p,n)3He Reaction, W.E. Wilson,

• R.L. Walter and D.B. Fossan, Nucl. Phys. 27, 421 (1961).

• 3. Rotational-State Lifetimes, D.B. Fossan and B. Herskind, Phys. Letters 2, 155 (1962).

• 4. Half-Lives of Two Excited States in 172Yb, B. Herskind and D.B. Fossan, Nucl. Phys. 40, 489

(1963).

• 5. Half-Lives of First Excited 2+ States (150


Dave Fossan, one of the creators

of “Gammasphere”


Funding/year

$2,000,000

$1,000,000

$0

1965

NSF Funding of Nuclear Structure Laboratory

1968

1971

1974

1977

1980

1983

∫ = $41.2Μ

1986

Year

1989

1992

1995

1998

2001

2004

2007


Department Visiting Committee

Comments on Nuclear Physics


The Future:

Linac:

Beijing Atomic Energy Institute wishes to

acquire the LINAC as a booster for their tandem.

Van de Graaff:

MARIACHI (Cosmic ray detectors for

outreach to high schools)

Tandem Teaching Lab (experiments for

advanced laboratory, and C 14 dating for

outreach)

Detector Research and Development

A. Deshpande, A. Drees, T.K.

Hemmick, B. Jacak, M. Marx


Mariachi Workshops


Accelerator Mass Spectrometry

• AMS is well established for 14 C, 10 Be, 26 Al, 36 Cl,

41 Ca, 129 I.

• 14 C is the familiar “dating” isotope for biological

samples.

• Living materials contain 14 C/ 12 C~10 -12

• After death, ratio decays t 1/2 =5730 yr

• Accelerator used to strip ions to +3 charge state,

eliminating molecules.

• 12 C via beam current, 14 C via count rate


Proposed Lab Layout:

MARIACHI

14 C

Grad Lab

Det R&D

Winder


Concluding remarks

• Alec Pond’s vision has largely been realized:

The purchase of the Van de Graaff was one of

several statements that Stony Brook intended to

be a major research university.

• Peter Paul’s vision to go after the LINAC has

paid off well.

• Peter also played a pivotal role in securing RHIC

for BNL.

• The Van de Graaff will continue as a productive

educational and outreach tool.


Personal remarks

• Came to Stony Brook, January 1970

• Will go on 5 year leave, starting January 2007 to

become Editor in Chief of the American Physical

Society.

• I have worked hard for Stony Brook, and Stony

Brook has been good to me. I’ve enjoyed my

interactions with my colleagues and the

outstanding SB students, especially the last 4

years teaching Honors Physics 141-2.

• My new job is different, with new challenges,

and I’m excited about taking them on.


The End

For material used in this presentation, many thanks to:

Peter Kahn, Lin Lee, and John Noe

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