Cooperation between physicists of JINR and ITALY
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Transcript of Cooperation between physicists of JINR and ITALY
Cooperation between physicists of JINR and ITALY
100th Session of the JINR Scientific Council – Dubna, 27 March 2006
P. Spillantini – INFN and University, Florence, Italy
at JINR(33 year later)
(1969)
The post-war dream (1946)....
Self-shunted streamer chamber
at LNP (Synchrocyclotron) at JINR (’70-’80)
and at LEAR in CERN (’80-’90)
(m( ) < 2.2 MeV)
antip-Ne (’83)
Magnetic hybrid Spectrometer (MIS)at Serpukhov
(Bologna, Milano, JINR)
Among main results
new radially excitated status of the pion:
mass= 1240±50 MeV = 360±35 MeVmass= 1770±30 MeV = 310±50 MeV
(’77-’90)
Collaboration with the Bogoliubov Theoretical Physics Laboratory
- Participation to workshops, schools, meetings organized by JINR
- Participation of JINR physicists to activities organized by Italian institutions
- fellowships, grants, visists of JINR physicists in Italy
NA48/2NA48/2NA48/2 experiment NA48/2 experiment at CERN SPSat CERN SPS
Re(’) = (14.7 2.2) 10-4
Experiments NA48, NA48/1, NA48/2 (SPS @ CERN)
LKr cryostat – first ISTC - CERN CP-violating parameter in K0 2 decays
+ 23 t of Krypton-Russian Industry for CERN experiment
05
101520253035
1993 1993 1999 2001 2002 2003
E731
NA31KTeV
NA48
х 10-4
Cusp Effect
M(π0π0), GeV/c2
K ± -> π±π0π0
(a0-a2)m(π+) = 0.264 ± 0.015 AAgg
00 = (1.8 ± = (1.8 ± 2.6)2.6)1010-4-4
AAgg00 = (1.8 ± = (1.8 ±
2.6)2.6)1010-4-4
““Charged” mode Charged” mode KK±±33±±
““Neutral” mode KNeutral” mode K±±0000±±
New NA48/2 results on direct CP-violating charge
asymmetry in K±3 slopes
First Observation KS 0e +e –
KS 0KS 0γγ
AAggcc =(1.7 ± 2.9) =(1.7 ± 2.9)1010--
44
AAggcc =(1.7 ± 2.9) =(1.7 ± 2.9)1010--
44
Experiments at CERN with participation of INFN and JINR
LHC ALICE 11 branches INFN and JINRATLAS 15 branches INFN and JINRCMS 13 branches INFN and JINR
PS NTOF 7 branches INFN and JINRDIRAC 2 branches INFN and JINRHARP 9 branches INFN and JINR
SPS CNGS 7 branches INFN and JINRNA48 5 branches INFN and JINRDIMUONS 3 branches INFN and JINRIONS/HYP. 5 branches INFN and JINRCOMPASS 3 branches INFN and JINR
INFN branchesInvolved
ALBABOCACSCTFEFI
GEIAEALE
LNFLNLLNSMINAPDPGPIPV
RM1RM2RM3SATOTSUD
+ LEP (DELPHI)
Experiments at other laboratories with participation of INFN and JINR
-- DESY
-- FERMILAB
-- BNL
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 E1-2005-129
Collaboration at Gran Sasso undermountain laboratories:
- Borexino
- Opera
BOREXINO: detector
18m
13.7m
•Main GoalMain Goal: : sub-MeV neutrinos detection (solar-Be7)•Target mass = 300/100tons organic scintillatorPC + PPO (1.5g/l)•Detection by ES careful background subtraction + high level of radiopurity required
BOREXINO: subsystemsScintillator purification systems:Water extractionVacuum distillationSilicagel adsorption
CTF + DI Water plant
Storage tanks: 300tons of PC
detector
Dubna team (LPP) did the following:
Dubna group of JINR has performed the following jobs in the frame of identifying common tasks and collaborating teams from both sides.
• - testing of VME electronics for the experiment,• - tuning flash electronics and analysis• - participated in the PMT finishing, the mounting and cleaning• - participation in production of the analog electronic modules for
the experiment • - proposed suggestion for upgrading Borexino prototype to be
able to study solar pp-neutrino.• - calibration big size of PMT in monitor and muon system (more
than 2700PMT)• - complete DAQ production and test of the program complex• - Dubna physicists suggested and made the analysis of the data
of CTF-detector, which gives a new physical results
Future plan
• Expected fill operations in 2006 that will bring the Borexino detector to the data taking stage :
• Data taking with water -3-4 monthes
• Start filling scintillanting liquid and than
• Start data taking
Collaboration "Ion sources for accelerator injection" of INFN-LNS (Catania) – IPPLM (Warsaw) – IP (Praha) – JINR (Dubna).
The Collaboration was based on the coupling of a LIS and an ECR ion source.
SERSEion source
Beam line
FIG 1 – A photo of the SERSE source
Fig. 2 – The ECRIS area at INFN-LNS.
For the next future:
- Continuation of bilateral and multilateral collaboration in Theoretical Physics
- Participation to space expt’s TUS and NUCLEON envisaged
- Participation to the SAD project now discussed
- Continuation of common development of intense ion sources
- Common course on accelerator physics envisaged
- Continuation of common activities in international expt’s at CERN + other laboratories
- Continuation of common expt’s at the JINR accelerators
- Participation of JINR to underground experimens at LNGS