dubna, january, 2007 101 session of the jinr scientific council dubna, 18-19 january 2007

Dubna, January, 2007

101 session of the JINR Scientific Council

DUBNA, 18-19 JANUARY 2007


Extension of themes previously approved for completion in 2006 for the years 2007–2009 with first priority

“Investigation of Fundamental Interactions in Nuclei at Low Energies” neutrinoless double beta-decay, neutrino magnetic moment, dark matter search, nuclear astrophysics as well as nuclear spectroscopy as their methodological basis, next generation experiments - SuperNEMO, GEMMA 2 and 3, GERDA

“Development of the FLNR Cyclotron Complex for Producing Intense Beams of Accelerated Ions of Stable and Radioactive Isotopes” and “Development and Construction of an Accelerator Complex for Producing Radioactive Ion Beams” funds for the projects, upgrading the U400 and U400M cyclotrons urgently to continue the realization of the DRIBs project

“Improvement and Development of the JINR Phasotron for Fundamental and Applied Research” SAD project and proton therapy


Extension of themes previously approved for completion in 2006 for the years 2007–2009 with first priority

“Synthesis of New Nuclei and Study of Nuclear Properties and Heavy-Ion Reaction Mechanisms”

discovery of new superheavy elements, investigation of nuclear and chemical properties, reactions induced by stable and radioactive ion beams, nuclear spectroscopy of heaviest isotopes, production and structure studies of exotic light radioactive nuclei, running time of the FLNR cyclotrons in 2006 is satisfactory, the beam time of 6000 hrs at U400 must be fully allocated in 2007, the running time of U400M will depend on the time schedule of its modernization


108

275

5 .4 s+2.2-1 .3

9 30. M eV

9 .70 M eV 0 .26 s +0.10

-0 .065

9 .52 M eV

SF<10%

4110

279

106

271

3

2

0 .42 s

228 M eV 381 s

S F

SF>90%

114287

10.01 M eV

0 .54 s+0.22-0 .13

3n

112283

3n 238 48U + C a,

11 2

283

116291

3n 246 48C m + C a,

1242Pu +48Ca, 3n

Genetic links

Yu. Oganessian PAC (JINR), Dubna, Nov.13, 2006


1

2

10.46 MeV

113

107

284

272

268

268

9.71 MeV

5

9.75 MeV

4109

276

111

280

3

14 s+17-5

126 ms+ 1 5 1- 4 4

0.69 s+0.83-0.25

5.2 s+6.2-1.8

1.0 s+ 1 . 3- 0 . 3

203 MeV 23.0 h + 2 7 . 5

- 8 . 1

SF

115

288

9.02 MeV

10.00 MeV

105

104

Decay chains Z-odd, N-odd nuclei

110/279

114/287

10.02

116/291

10.74

112/285

110/281

114/289

9.54

18 ms

11 s

29 s

0.51 s 2.6 s

112/283

3.8 s

116/293

61 ms

110

112

114

116

10.54

9.16

9.82

0 2. s

108/275

106/271

9.30

0.19 s

2 min

104

106

108

104/267

1.3 h

8.54

Decay chains Z-even, N-odd nuclei

Yu. Oganessian PAC (JINR), Dubna, Nov.13, 2006

Chemical experiments

accessible for chemical studies

of-line

on-line


Extension of themes previously approved for completion in 2006

“Nuclear and Particle Interactions at Intermediate Energies” the projects PIBETA, ANKE COSY, Mu-CATALYSIS and MUONextension for the years 2007-2009 with first priority

“Construction of the IREN Facility”recent progress in the development and adjustment of LINAC components, positive changes in the financing of the IREN project

extension of the theme for one year with the tasks: completion of the assembly of the LUE-200 accelerator preparation for commissioning the accelerator


Latest results on -spectroscopy experiments with heavy nuclei at FLNR

The report “Latest results on -spectroscopy experiments with heavy nuclei at FLNR”, was presented by K. Hauschild (CSNSM, IN2P3-CNRS, Orsay, France). The first results obtained in cooperation with Orsay and Strasbourg are very promising, and this line of research deserves a strong support.

The PAC strongly encourages further developments in γ-spectroscopy at the Flerov Laboratory.


7 Ge + 6 BGO from theFrance-UK Loan Pool

Stable and linear CAMAC electronics provided by FLNR

Global clock @ 1 MHz

Total focal plane counting rate with 0.6 pA 48Ca = 700 Hz

GABRIELA

GABRIELA (Gamma Alpha Beta Recoil Investigations with the ELectromagnetic Analyser)

K. Hauschild, A.V. Yeremin et al., accepted in Nucl. Instr. Meth. A


Status of the GEMMA experiment

First GEMMA–1 results on neutrino magnetic moment measurements in the neutrino beam of the Kalinin reactor - the upper limit reached demonstrates the significant potential of this method for future developments of GEMMA 2 and 3. Construction of the new neutrino laboratory at the Kalinin NPP and its extension should be supported by JINR as an essential step in the development of this original approach in reactor neutrino physics.

Continuation of this experiment in the next three years with first priority - GEMMA 2 and 3 extension should be vigorously pursued.


Reactor #2 of the

“Kalininskaya” Nuclear Power Plant

(400 km North from Moscow)

Technological roomjust under reactor

14.5 m14.5 m only!

Power: 3 GWON: 315315 days/yOFF: 5050 days/y


Scientific programme for the 1st stage of the IREN facility

successful finishing of dismantling IBR-30 and the recent progress in the creation and adjustment of LINAC components for IREN. The scientific programme and the work plan with cost assessments for the 1st stage of the IREN facility are proposrd.

The JINR and FLNP directorates should maintain the momentum of the project implementation, extend cooperation with other laboratories and institutions to construct by the end of 2007 the 1st stage of IREN, including the electron accelerator, the stand for applied research, and the neutron production target.


IREN 1-st stage (proposal)

Electron linac 100 MeVElectron linac 100 MeV

++

Nonmultiplying target & Nonmultiplying target & stand for applied tasksstand for applied tasks

(2.5 – 7.5) 10(2.5 – 7.5) 101212 n/s n/s 101015 15 /s/s


Results to the end of 2007

Electron gun with modulator Beam diagnostics Focusing solenoid Klystron 1-st accelerating section

Beam tests after 1-st Beam tests after 1-st sectionsection


Conclusion

Due to the strong support from JINR Directorate FLNP made a significant progress in IREN 1-st stage realization.

In case of keeping the financing rate In case of keeping the financing rate achieved in August-November 2006 the achieved in August-November 2006 the accelerator will be put into operation accelerator will be put into operation in the end of 2007.in the end of 2007.

Future of the project will depend on the progress in 2007.


Proposals of new activities

“A Search for Cold Dark Matter with Cryogenic Detectors at Frejus Underground Laboratory” (within the framework of the EDELWEISS project)

The PAC welcomes the new project on the participation of DLNP’s group in the EDELWEISS-II experiment aimed at searching for cold Dark Matter with cryogenic detectors at Frejus underground laboratory. Recognizing JINR’s experience in extremely low-background physics and the previous results of EDELWEISS-I phase, the JINR contribution to the next phase of the experiment should be essential and useful for the development of the project.

Recommendation. The PAC considers the EDELWEISS-II project to be of high priority for DLNP and recommends approval of the participation in it.



“R&D of a Separator at the Beam of U400MR for γ-spectroscopic Investigations of Heavy Isotopes”

Recommendation. The development and construction of a separator at the beam of U400MR for γ-spectroscopic investigations of heavy nuclei is strongly recommended. The project should be presented at the next meeting of the PAC for approval and implementation.



LESI experiment The PAC heard with great interest a report on first

results of the experimental investigation of the dd interaction in the astrophysical energy region using the Hall plasma accelerator in the LESI experiment. With this accelerator it will be possible to study cross sections and astrophysical S-factors of the dd-, pd-, and d3He-reactions in the ultra-low energy region with much higher accuracy, which is very essential for understanding the dynamics of stars.

continuation of the LESI project with first priority.


SAD project

high scientific and practical importance of the SAD project, its high-quality technical background as well as a successfully working team from five participating organizations

the strong efforts of the project management to seek the appropriate funds for the project

Recommendation. the JINR Directorate, together with the organizations that took part in the preparation of the SAD project and with the research institutions interested in the realization of the project, address the Russian Federal Agency for Atomic Energy in order to consider the urgency of SAD and the possibility of incorporating it into a corresponding research programme. Negotiations with European institutions should be continued. The project organization should also seek more internationality with corresponding projects going on in Japan and the USA.


Programme of Nuclear Physics Research for 2007–2009

The PAC was informed by JINR Vice-Director M. Itkis about the preparation of the JINR Programme of Nuclear Physics Research for 2007–2009 in line with the main provisions of the road map and with emphasis on the concentration of the available financial resources on the most important directions of research.

The PAC endorses the proposals for the Programme of Nuclear Physics Research for this period, presented by laboratories, and has the following considerations.


Bogoliubov Laboratory of Theoretical Physics nuclear structure problems in nuclei near drip lines, halo nuclei, a search for the pseudospin symmetry, the fusion-fission reactions leading to superheavy compound nuclei, few-body systems, relativistic nuclear dynamics, phase transitions in relativistic heavy-ion collisions

Dzhelepov Laboratory of Nuclear Problemsexperimental investigations of fundamental interactions in nuclei (fundamental properties of electron (anti)neutrino, neutrinoless double-beta decay, dark matter), study of nucleus and particle interactions at intermediate energies (rare processes, nuclear reaction mechanisms), as well as design studies of new cyclotrons and project development of specialized cyclotrons


Flerov Laboratory of Nuclear Reactionsthe theme “Synthesis of New Nuclei and Study of Nuclear Properties and Heavy-Ion Reaction Mechanisms”The upgrade of the U400M –– the realization of the mode for acceleration of ions up to 10 MeV/A –should be accomplished with particular urgency. Timely preparation of experimental equipment is an essential prerequisite for the implementation of the FLNR research programme. Adequate funds should be provided. Chemical separation techniques should be strongly emphasized in future.Frank Laboratory of Neutron Physicsthe extremely high quality proposed research activities and notes that most of those have to be conducted at external neutron facilities in other laboratories until neutrons are again available at FLNP, it is timely to enhance detailed preparation of experiments to be carried out at IREN-1.


Laboratory of Information TechnologiesThe quality of service of the JINR networking is to be further increased and developments concerning Grid and parallel computing in nuclear physics are to be vigorously pursued. The mathematical support of experimental and theoretical studies at JINR, provided by the Laboratory, should be continued. To consider the impact of these activities on the JINR nuclear physics studies in more detail, some information is needed on the allocation of the LIT personnel resources to particular tasks and on the opinion of other JINR laboratories concerning these studies.

dubna, january, 2007 101 session of the jinr scientific council dubna, 18-19 january 2007

Documents

heavy nuclei

spectroscopy experiments

investigation of nuclear

nuclear astrophysics

study of nuclear properties

radioactive isotopes

jinr scientific council

oganessian pac jinr