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Collaboration between the United States and the Joint Institute for Nuclear Research, Past and Present

T. HallmanT. Hallman

JINR 50JINR 50thth Anniversary Celebration Anniversary Celebration

Dubna, RussiaDubna, Russia

March 27, 2006March 27, 2006

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There is a long standing tradition of collaboration betweenThere is a long standing tradition of collaboration between institutions in the United States and JINR which has beeninstitutions in the United States and JINR which has been enormously important for advancing scientific knowledgeenormously important for advancing scientific knowledge

G.Seaborg at JINR, Dubna, 28.09.1969 N.N. Bogoliubov (JINR) and R. Wilson (FNAL)Dubna, 1975

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First Joint Experiment at U70 (Protvino):First Joint Experiment at U70 (Protvino):Early days, determining the Pion Electromagnetic RadiusEarly days, determining the Pion Electromagnetic Radius

D.Drickey (FNAL), M.Turala (JINR), E.Tsyganov (JINR)Protvino, USSR, 1970-1971:Spark Chamber Installation

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First Joint Experimental Efforts in the U.S. at FNALFirst Joint Experimental Efforts in the U.S. at FNAL

R.Wilson (FNAL) andA.Kuznetsov (JINR) Participants

of joint experimentFNAL, USA, 1972-1975

Yu.Pilipenko, V.Bartenev and A.Kuznetsov (JINR)

Studying the asymptotic total and differential cross section for hadroninteractions

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First Joint Experimental Efforts in the U.S. at FNAL

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Early collaboration on searching for terra incognita: Element 104 synthesis

V. Druin, M. Nichke, Yu. Labanov: waiting in the control room

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JINR Scientific Traditions in Understanding the Structure of Nuclear Matter

Fluctons (Mescheriakov, Blokhintsev)

New quantum number – color (Bogolubov, Struminsky,Tavkhelidze)

Quark-counting rule (Matveev, Muradyan, Tavkhelidze)

Self-similarity, Scaling (Bogolubov, Logunov)

Cumulative effect (Baldin, Stavinsky, Leksin)

Quarks in Nuclei & QCD

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Not to mention theoretical work on Neutrinos!Not to mention theoretical work on Neutrinos!

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JINR’s Scientific Partners in USAJINR’s Scientific Partners in USA National LaboratoriesNational Laboratories

• Brookhaven NatBrookhaven Nationalional Lab Laboratory oratory • Fermi NatFermi Nationalional Accel Acceleratorerator Lab Laboratory oratory • Lawrence Berkeley NatLawrence Berkeley Nationalional Lab Laboratory oratory • Argonne NatArgonne Nationalional Lab Laboratory oratory • Los Alamos NatLos Alamos Nationalional Lab Laboratory oratory • Lawrence Livermore National LaboratoryLawrence Livermore National Laboratory• ……

Universities:Universities:• Boston, Baltimore, New York, Princeton, Florida, California, Boston, Baltimore, New York, Princeton, Florida, California,

Michigan, Virginia, …Michigan, Virginia, …

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Cooperation with U.S.A.

Location of centres collaborating with JINR

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Cooperation with the USACooperation with the USA

R.Card (DoE, USA) and V.Kadyshevsky (JINR), Dubna, 23 April 2002

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Cooperation with the USACooperation with the USA

Dr. J. Marburger at JINR, Dubna, 3 June 2002

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Yu.Ts. Oganessian

Superheavy ElementsSuperheavy Elements

1999: element 1142000: element 1162002: element 118

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Superheavy ElementsSuperheavy Elements

Preparation of the target.

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CDF

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THE WORLD BEST TOP MASS MEASUREMENT THE WORLD BEST TOP MASS MEASUREMENT

World Best : MTOP= 173.5 + 3.7/-3.6 (stat.) +/- 1.3 (syst.) “Lepton + jets” mode A

New Precise: MTOP= 169.8 + 9.2/-9.3 (stat.) +/- 3.8 (syst.) “Dilepton” mode B

The JINR/CDF Team of J.Budagov, G.Chlachidze, V.Glagolev, F.Prokoshyn, A.Sissakian, I.Suslov together with

G.Bellettini (INFN) and G.Velev(FNAL)

contributed strongly to the M(top) measurement in p p -> t t +… :

A B

E1-2005-131 E1-2005-129JINR Communications

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(Still !) One of the most compelling questions in modern Nuclear Physics is what role quark and gluon degrees of freedom play in nuclear structure and in the dynamic of nuclear matter!

A new examination of and old questionA new examination of and old question

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LHE Collaboration on PHENIXLHE Collaboration on PHENIX

• 2 “central” 2 “central” spectrometersspectrometers

• 2 “forward” 2 “forward” spectrometersspectrometers

• 2 “global” 2 “global” detectorsdetectors

Fall-99

Year-1Year-2

Year-3

Major Contribution from LHE Physicists to Aerogel PID Upgrade of PHENIX

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LPP Collaboration on STARLPP Collaboration on STAR

LPP Scientists and Technicians made a major contribution toThe construction of the STAR Barrel Electromagnetic Calorimeter

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LP Collaboration on STARLP Collaboration on STAR

LPP scientists and technicians did all the mechanical assembly  of the Barrel Electronagetic Calorimeter modules and the  PMT boxes at Wayne State as well as the installation work too.  At  home in Dubna, they produced all the mechanical components for the  PMT boxes and the end steel plates for the modules.  

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LPP Contributions to QGP Search at RHIC

Study of non-photonicelectrons particles containing c, b very likely suppressed

Development of HBTas a precision tool

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INTERNATIONAL JOURNAL OF HIGH-ENERGY PHYSICS

VOLUME 44 | NUMBER 1 |

STAR Prepares to Shine a Light on Spin

Major contribution by LHE scientists engineers, and techs to the design and manufacturing of the STAR EndCap EMC

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New ideas and LHE group physics suggestions

Z-scaling

Momentum and spin particle correlations

Multiple particle correlations and very high multiplicity

Fractal dimensions of events

G.Averichev et al., JINR Rapid Communications 3[83]-97, Dubna 1997.

M.Tokarev, STAR Note SN304, 11 September, 1997.

M.Tokarev, G.Skoro, STAR Note SN0339, 24 April 1998.

M.Tokarev E.Potrebenikova , STAR Note SN0379, 12 November, 1998.

G.P.Skoro, M.Zupan,M.V.Tokarev, STAR Note 0406, 19 July, 1999

N.D. Gagunashvili et al., “MC Study of the EndCap EMC Preliminary Design for the STAR detector”, STAR Note 0422, 22 May, 2000.

C.Algover et al., NIM A499 (2003) 740.

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SM D

6 18calorim eterlayers

3 NIM A499 (2003) 740

EEMC Geometry

EEMC Resolution

o/ separation

e/h discrimination

EEMC Simulation

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ConclusionsConclusions

The tradition of collaboration between institutions in The tradition of collaboration between institutions in the United States and JINR which has been enormouslythe United States and JINR which has been enormously important for advancing scientific knowledge, continuesimportant for advancing scientific knowledge, continues even stronger todayeven stronger today

One can only imagine what this collaboration will bring One can only imagine what this collaboration will bring in the futurein the future

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BackupBackup

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Florida State UniversityFlorida State University

From left to right: A. Sissakian, R. Herndon, V. Kadyshevsky, and M. Khankhasayev.Tallahassee, Florida, February 8, 2002.

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R & D on Advanced DetectorsR & D on Advanced Detectors

Count rate over the South Pole is 5-10 times lower (blue region) – doubtless water presence.

First Results: HEND has 4 signals of neutronsfrom sensors SD, MD, LD and SC/IN, and for each of them the map of orbital measurements is currently produced.

The map of MD sensor is contributed by epithermal neutrons mainly left.

This MD map is consistent with the map for epithermal neutrons from Neutron Spectrometer.

ODYSSEY Orbiter Mission HEND: High Energy Neutron Detector.