99 th session of the JINR Scientific Council

Dubna, January, 2006Dubna, January, 2006

99 th session of the 99 th session of the JINR Scientific CouncilJINR Scientific Council

Nuclear Physics PACNuclear Physics PAC


Programme of Nuclear Physics Programme of Nuclear Physics Research for 2006–2008Research for 2006–2008

The PAC took note of the proposals The PAC took note of the proposals for the JINR Programme of Nuclear for the JINR Programme of Nuclear Physics Research for 2006–2008 Physics Research for 2006–2008 presented by laboratories, in which presented by laboratories, in which the available resources will be the available resources will be concentrated on the most important concentrated on the most important directions of researchdirections of research


Bogoliubov Laboratory of Theoretical Bogoliubov Laboratory of Theoretical PhysicsPhysics

The main goals The main goals the properties of nuclei near drip linesthe properties of nuclei near drip lines;; the structure of superheavy nuclei; the structure of superheavy nuclei; the dynamics of nuclear reactions and mechanisms of the dynamics of nuclear reactions and mechanisms of

production of exotic nuclides; production of exotic nuclides; the fundamental properties of exotic few-body nuclear, the fundamental properties of exotic few-body nuclear,

atomic and molecular systems; atomic and molecular systems; the behavior of nuclear matter and its phase transitions the behavior of nuclear matter and its phase transitions

at high temperature and density; at high temperature and density; to elaborate new methods of relativistic nuclear physics to elaborate new methods of relativistic nuclear physics

and apply them to analyse subnuclear and spin effects and apply them to analyse subnuclear and spin effects

in few-nucleon systemsin few-nucleon systems Recommendation. The PAC approves this programme and recommends adequate funding of the theme “Nuclear theory” with first priority for 2006.


Dzhelepov Laboratory of Nuclear Dzhelepov Laboratory of Nuclear ProblemsProblems

The PAC aproves the progress report on the numerous The PAC aproves the progress report on the numerous activities at DLNP, grouped in activities at DLNP, grouped in

The efforts in searches for double beta-decay aiming for The efforts in searches for double beta-decay aiming for greatly enlarged lifetime limits are impressive and greatly enlarged lifetime limits are impressive and should be pursued vigorously. should be pursued vigorously.

Concerning the Phasotron, the PAC is pleased to note Concerning the Phasotron, the PAC is pleased to note that the consequences of the recent fire accident are that the consequences of the recent fire accident are being overcome and that the Phasotron operation can being overcome and that the Phasotron operation can be scheduled for the summer of 2006. be scheduled for the summer of 2006.

It also welcomes an adequate support of the JINR and It also welcomes an adequate support of the JINR and FLNP directorates for recommissioning this facility.FLNP directorates for recommissioning this facility.

Recommendation. “Investigation of fundamental interactions in nuclei at low energies”, “Nucleus and particle interactions at intermediate energies”, and “Development of the JINR Phasotron for fundamental and applied research” should be continued with first priority in 2006.


Flerov Laboratory of Nuclear ReactionsFlerov Laboratory of Nuclear Reactions

The PAC was pleased to hear the encouraging new results The PAC was pleased to hear the encouraging new results on the synthesis of superheavy nuclei with Z=118. It on the synthesis of superheavy nuclei with Z=118. It wishes the Laboratory success in the continuation of wishes the Laboratory success in the continuation of these experiments.these experiments.

The programmeThe programme for the years 2006–2008 is focused on for the years 2006–2008 is focused on major research areas: major research areas:

synthesis of superheavy elements including reaction synthesis of superheavy elements including reaction studies, and investigations of their nuclear and chemical studies, and investigations of their nuclear and chemical properties, properties,

studies of reaction mechanisms, gamma spectroscopy studies of reaction mechanisms, gamma spectroscopy of the heaviest elements, of the heaviest elements,

the production and structure studies of exotic light the production and structure studies of exotic light radioactive nuclei.radioactive nuclei.


Recommendations. The PAC approves this programme and acknowledges its scientific merits. The themes “Development and construction of an accelerator complex for producing radioactive ion beams (project DRIBs)”, “Synthesis of new nuclei and study of nuclear properties and heavy-ion reaction mechanisms”, and “Development of the FLNR cyclotron complex for producing intense beams of accelerated ions of stable and radioactive isotopes” should be continued in 2006 with first priority. Adequate funds should be provided.The upgrade of the U400M–U400 accelerator complex is essential for the challenging research programme of FLNR and for maintaining its leadership in the field. The acceleration of low-energy beams at U400M should be realized with particular urgency. These would allow an uninterrupted running of experiments during the modernization of U400. Timely preparation of experimental equipment is an essential prerequisite for the realization of the FLNR research programme.The PAC appreciates the satisfactory running time of the FLNR cyclotrons in 2005. The required beam time of 5500 hrs at U400 and 3500 hrs at U400M should be fully allocated in 2006.


Frank Laboratory of Neutron PhysicsFrank Laboratory of Neutron Physics

The PAC was impressed by the proposed FLNP scientific The PAC was impressed by the proposed FLNP scientific programme on neutron nuclear physics, containing the programme on neutron nuclear physics, containing the following priorities in fundamental research: experiments following priorities in fundamental research: experiments with polarized neutrons and nuclei, fundamental properties with polarized neutrons and nuclei, fundamental properties of the neutron, UCN physics, nuclear fission, and nuclear of the neutron, UCN physics, nuclear fission, and nuclear structure.structure.

Recommendation.Recommendation. The PAC approves the FLNP research The PAC approves the FLNP research activity at JINR and external neutron sources, which give activity at JINR and external neutron sources, which give valuable scientific results and permit to maintain the high valuable scientific results and permit to maintain the high expertise of this Laboratory’s scientists. The theme expertise of this Laboratory’s scientists. The theme “Nuclear physics with neutrons” should be continued with “Nuclear physics with neutrons” should be continued with first priority in 2006.first priority in 2006.


Laboratory of Information TechnologiesLaboratory of Information Technologies

The PAC noted with satisfaction the present status of the The PAC noted with satisfaction the present status of the networking system at JINR worked out by LIT, and networking system at JINR worked out by LIT, and appreciates the future plans for making the communication appreciates the future plans for making the communication system more effective. system more effective.

Recommendations.Recommendations. The mathematical support of The mathematical support of experimental and theoretical studies at JINR, experimental and theoretical studies at JINR, provided by the Laboratory, should be continued and provided by the Laboratory, should be continued and further strengthened. The PAC recommends further strengthened. The PAC recommends continuation of work performed at LIT within the continuation of work performed at LIT within the direction “Networks, Computing, Computational direction “Networks, Computing, Computational Physics” on the themes “Information, computer and Physics” on the themes “Information, computer and network support of JINR’s activity” and network support of JINR’s activity” and “Mathematical support of experimental and “Mathematical support of experimental and theoretical studies conducted by JINR” with first theoretical studies conducted by JINR” with first priority in 2006priority in 2006..


Draft road map in the field of nuclear Draft road map in the field of nuclear physicsphysics

presented by M. Itkispresented by M. Itkis The PAC heard with interest the summary of the main lines The PAC heard with interest the summary of the main lines

of research planned by nuclear physics groups in of research planned by nuclear physics groups in corresponding laboratories for the next three years, and corresponding laboratories for the next three years, and accepts this presentation as an initial step in the road map accepts this presentation as an initial step in the road map aimed at a long range of 10–15 years. aimed at a long range of 10–15 years.

The PAC therefore recommends that all JINR nuclear The PAC therefore recommends that all JINR nuclear physics groups disphysics groups disccuss and formulate in a common effort uss and formulate in a common effort the strategic lines of research in nuclear physics in 15 the strategic lines of research in nuclear physics in 15

years’ perspective.years’ perspective. The PAC also emphasizes that this plan should maintain a The PAC also emphasizes that this plan should maintain a

vigorous programme in nuclear physics which will exploit vigorous programme in nuclear physics which will exploit the opportunities offered at JINR as a laboratory with world-the opportunities offered at JINR as a laboratory with world-

class expertise in nuclear scienceclass expertise in nuclear science


IREN projectIREN project

The PAC was pleased to hear the FLNP Directorate’s information The PAC was pleased to hear the FLNP Directorate’s information concerning the successful start-up of dismantling IBR-30 and the concerning the successful start-up of dismantling IBR-30 and the recent progress in the creation and adjustment of LINAC recent progress in the creation and adjustment of LINAC components. components.

The PAC agrees with the decision of the JINR Directorate concerning The PAC agrees with the decision of the JINR Directorate concerning reducing the full-scale IREN project to its first stage (LINAC with a reducing the full-scale IREN project to its first stage (LINAC with a non-multiplying target).non-multiplying target).

Recommendation.Recommendation. The PAC recommends extension of the theme The PAC recommends extension of the theme “Construction of the IREN facility (IREN project)” for one year with “Construction of the IREN facility (IREN project)” for one year with first priority with the tasks for 2006: the completion of dismantling first priority with the tasks for 2006: the completion of dismantling IBR-30 and complex tests of the accelerator systems. The final IBR-30 and complex tests of the accelerator systems. The final goal is to create by the end of 2007 the 1st stage of IREN, goal is to create by the end of 2007 the 1st stage of IREN, including the electron accelerator, the stand for applied research, including the electron accelerator, the stand for applied research, and the neutron producing target. A work plan with budget and the neutron producing target. A work plan with budget assessment and detailed scientific programme, coordinated with assessment and detailed scientific programme, coordinated with FLNR, should be presented by the project management at the next FLNR, should be presented by the project management at the next PAC meetingPAC meeting..


IREN 1IREN 1stst stage parameters stage parametersInitial data: E=100 MeV, I=2.5 A, dt=100 ns, f=50(150) Hz


SADSAD projectproject

The PAC heard an exciting status report about the The PAC heard an exciting status report about the project “Subcritical Assembly at Dubna” (project project “Subcritical Assembly at Dubna” (project SAD), and welcomes the plans for creating an SAD), and welcomes the plans for creating an international facility at Dubna for addressing international facility at Dubna for addressing important problems of modern nuclear energy important problems of modern nuclear energy production and waste transmutation. The PAC production and waste transmutation. The PAC regards SAD as a project establishing closer regards SAD as a project establishing closer connection of JINR with the world scientific connection of JINR with the world scientific transmutation community. This project is still in the transmutation community. This project is still in the R&D phase, and the terms of international R&D phase, and the terms of international collaboration and financing should be worked out. collaboration and financing should be worked out.


Recommendations.Recommendations. The PAC encourages The PAC encourages collaboration between the SAD project and the collaboration between the SAD project and the Integrated Project EUROTRANS with the support Integrated Project EUROTRANS with the support of the International Scientific and Technical of the International Scientific and Technical Centre (ISTC). A detailed proposal is expected Centre (ISTC). A detailed proposal is expected at a forthcoming meeting, specifying also the at a forthcoming meeting, specifying also the details of collaboration and the financial details of collaboration and the financial resources. For a project of this magnitude, resources. For a project of this magnitude, special funds should be sought from national special funds should be sought from national energy agencies. energy agencies. The PAC recommends that The PAC recommends that the FLNP and DLNP directorates consider the FLNP and DLNP directorates consider the possibility of including SAD in the JINR the possibility of including SAD in the JINR Topical Plan of Research as a separate Topical Plan of Research as a separate theme of first priority.theme of first priority.


Why SAD in Dubna:Why SAD in Dubna:

Transmutation and ADS is a very Transmutation and ADS is a very attractive path to develop or attractive path to develop or regain development activities in regain development activities in advanced nuclear technologyadvanced nuclear technology• For many JINR members countries it is For many JINR members countries it is

a good chancea good chance WE CAN CREATE A CENTRE OF WE CAN CREATE A CENTRE OF

EXCELLENCE IN TRANSMUTATION EXCELLENCE IN TRANSMUTATION RESEARCH IN DUBNA RESEARCH IN DUBNA


European ADS landscape:European ADS landscape: MUSE experiment, successully completedMUSE experiment, successully completed

• Features: Features: Zero power, fast neutron spectrum, sodium coolant, Zero power, fast neutron spectrum, sodium coolant,

MOX fuelMOX fuel YALINA experiment, in reality the first YALINA experiment, in reality the first

European neutron generator driven European neutron generator driven experiment, First phase completed:experiment, First phase completed:

Zero power, thermal neutron spectrum, Zero power, thermal neutron spectrum, polyethylene moderator, HEU fuel polyethylene moderator, HEU fuel

YALINA experiment, phase 2, Yalina YALINA experiment, phase 2, Yalina BoosterBooster

Zero power, coupled fast-thermal core, lead-Zero power, coupled fast-thermal core, lead-polyethylene moderator-coolant, HEU fuelpolyethylene moderator-coolant, HEU fuel

MegaPie target experiment at PSIMegaPie target experiment at PSI 1 MW liquid Pb-Bi spallation target1 MW liquid Pb-Bi spallation target


ConferencesConferences 3rd Sandanski Coordination Meeting on 3rd Sandanski Coordination Meeting on

Nuclear Science (Bulgaria, 26–30 September Nuclear Science (Bulgaria, 26–30 September 2005) presented by R. Kalpakchieva.2005) presented by R. Kalpakchieva.

III International Summer Student School III International Summer Student School on Nuclear Physics Methods and Accelerators on Nuclear Physics Methods and Accelerators in Biology and Medicine (Dubna, 30 June –11 in Biology and Medicine (Dubna, 30 June –11 July 2005) presented by S. Ivanova. special July 2005) presented by S. Ivanova. special significance of attracting students and PhD significance of attracting students and PhD students from Member States to participate in students from Member States to participate in summer practical courses and schools. This summer practical courses and schools. This activity should be continued with first priority.activity should be continued with first priority.


Scientific reportScientific report The PAC noted with interest the The PAC noted with interest the

report “Liquid-fog and liquid-gas report “Liquid-fog and liquid-gas phase transitions of hot nuclei” by phase transitions of hot nuclei” by V. Karnaukhov. The PAC appreciates V. Karnaukhov. The PAC appreciates the results on this interesting phase the results on this interesting phase of hot nuclear matter and supports of hot nuclear matter and supports this research line.this research line.

Documents

99 th session of the JINR Scientific Council