Collaboration

LHE JINR Nagoya Univ. Miyazaki Univ.

PURPOSE

Study deuteron structure at short distances (to see how deuteron looks like inside)

Deuteron -- the simplest nucleus

Invisible (too small) Deuteron

Poppy-seed

Like a poppy-seed

Like the sun (HUGE)

Magnification

by 1012

How to study ? Break! See what has happend?

What we need?

1.

2. Accelerators

3. Detectors

Ideas!

Polarized Deuterons

+

+

Collaboration

LHE JINR Nagoya Univ. Miyazaki Univ.

Prof. Fukui with JINR physicists

Results

1. Scientific publicatios (> 7)

2. In Japan: Ph.D. (1), Diploma (2)

3. In Russia: Ph.D. (2)

New Unexpectable Experimental Data about Deuteron Structure were Obtained.

Collaboration BNL USA LHE JINR Tsukuba Univ.

AcceleratorRelativistic Heavy Ions Collider (RHIC)

At Brookhaven National Laboratory

Experiment PHENIX

USA Abilene Christian University, Abilene, TX Brookhaven National Laboratory, Upton, NY University of California - Riverside, Riverside, CA University of Colorado, Boulder, CO Columbia University, Nevis Laboratories, Irvington, NY Florida State University, Tallahassee, FL Florida Technical University, Melbourne, FL Georgia State University, Atlanta, GA University of Illinois Urbana Champaign, Urbana-Champaign, IL Iowa State University and Ames Laboratory, Ames, IA Los Alamos National Laboratory, Los Alamos, NM Lawrence Livermore National Laboratory, Livermore, CA University of New Mexico, Albuquerque, NM New Mexico State University, Las Cruces, NM Dept. of Chemistry, Stony Brook Univ., Stony Brook, NY Dept. Phys. and Astronomy, Stony Brook Univ., Stony Brook, NY Oak Ridge National Laboratory, Oak Ridge, TN University of Tennessee, Knoxville, TN Vanderbilt University, Nashville, TN

Brazil University of São Paulo, São PauloChina Academia Sinica, Taipei, Taiwan China Institute of Atomic Energy, Beijing Peking University, BeijingFrance LPC, University de Clermont-Ferrand, Clermont-Ferrand Dapnia, CEA Saclay, Gif-sur-Yvette IPN-Orsay, Universite Paris Sud, CNRS-IN2P3, Orsay LLR, Ecòle Polytechnique, CNRS-IN2P3, Palaiseau SUBATECH, Ecòle des Mines at Nantes, NantesGermany University of Münster, MünsterHungary Central Research Institute for Physics (KFKI), Budapest Debrecen University, Debrecen Eötvös Loránd University (ELTE), Budapest India Banaras Hindu University, Banaras Bhabha Atomic Research Centre, BombayIsrael Weizmann Institute, RehovotJapan Center for Nuclear Study, University of Tokyo, Tokyo Hiroshima University, Higashi-Hiroshima KEK, Institute for High Energy Physics, Tsukuba Kyoto University, Kyoto Nagasaki Institute of Applied Science, Nagasaki RIKEN, Institute for Physical and Chemical Research, Wako RIKEN-BNL Research Center, Upton, NY

Rikkyo University, Tokyo, Japan Tokyo Institute of Technology, Tokyo University of Tsukuba, Tsukuba Waseda University, Tokyo S. Korea Cyclotron Application Laboratory, KAERI, Seoul Kangnung National University, Kangnung Korea University, Seoul Myong Ji University, Yongin City System Electronics Laboratory, Seoul Nat. University, Seoul Yonsei University, SeoulRussia Institute of High Energy Physics, Protovino Joint Institute for Nuclear Research, Dubna Kurchatov Institute, Moscow PNPI, St. Petersburg Nuclear Physics Institute, St. Petersburg St. Petersburg State Technical University, St. PetersburgSweden Lund University, Lund

12 Countries; 58 Institutions; 480 Participants*

*as of January 2004

PHENIX Detector and People

Physics

Au +Au collisionAu +Au collision

Interesting for:

Nuclear phys. (atoms) Particle phys.

Astrophysics Cosmology (the universe)

Need new detector sub-system

Cherenkov counters with aerogel radiator

Two R&D RUNs in DUBNA and three in Tsukuba

Box Production/Inspection at Dubna

Arrival of parts from Tsukuba and Dubna

Installation of Aerogel Detector

Aerogel Cherenkov Counter• Modules for half sector are installed in 2003• Enhancement of PID capability at PHENIX

– Proton separation from /K up to p = 7 GeV/c

chargedtrack

160 segments

z (beam

) dire

ction

Azim

uthal angle

Half of th

em in

2003

Reflector (Goretex) PMT

(3 inch)

Aerogel (index~1.011) （ 11x22x20

cm3 ）

Integration Cube (Air)PMT(3 inch)

Present status

Detector is working just now.