ER01/JA01, th Session of the JINR Scientific Council Dubna, March 27, 2006 Participation of JINR scientists in joint experiments at Paul Scherrer Institut Ralph Eichler, Director

ER01/JA01, Recent collaborative efforts 1.Heavy element research 2.Detector development (avalanche photo diodes, APD) 3.Particle physics: (i)   e conversion,   e  (ii) pion beta decay, (iii)   e 1.UCN physics (i) UCN source development (FLNP) (ii) nEDM (DLNP, to be confirmed!) (iii) neutron lifetime (FLNP, to be confirmed!)

ER01/JA01, % of PSI funding for design and operation of facilities and support of users SLS Energy Technology SINQ Biology Proton Accelerator Nano Technology Proton Therapy Hotlaboratory SSSS Particle Physics

ER01/JA01, Chemical Confirmation of Dubnium production in the Nuclear Reaction of 48 Ca with 243 Am MeV 125 ms 1  MeV 5.2 s Mt  9.71 MeV 1.03 s Bh  0.69 s  MeV SF 23.1 hr 205 MeV s 5  9.02 MeV Db 268 PHYSICAL REVIEW C 69, (R) (2004) Nuclear Chemistry at FLNR (PSI) : (JINR, LLNL, PSI) Radiochemical separation procedure developed at PSI: Unambiguous chemical identification of Db → new long-lived isotope of dubnium → indirect confirmation for element 115 New experiment planned for chemical identification of element 112 (April-May 06) PHYSICAL REVIEW C 72, (2005) Nuclear Physics at FLNR 2003: (JINR, LLNL)

ER01/JA01, Fast Timing with AMPD Arrays in High Magnetic Fields (5 T) Sadygov, Zhuk, Gritsaj, Mamedov (JINR), Scheuermann, Stoykov, Renker (PSI) AMPD array: 4x type mW-3 Scintillator: EJ-230/BC-418 (2x10x10 mm 3 ) Signal shape for minimum ionizing particles Time resolution of a telescope (2 arrays)

ER01/JA01, Summary of Lepton Flavour Violating experiments  → e   → eA  → eee SUSY SU(5) BR(   e  ) =   A  eA =  BR(     ) = Current Limits: BR(  +  e +  ) < 1.2 x (MEGA) 1)  Ti  eTi < 7 x (SINDRUM II) 2) 1) hep-ex/ ) A. van der Schaaf, priv. comm. BR Year MEG “Supersymmetric parameterspace accessible by LHC” W. Buchmueller, DESY, priv. comm.

ER01/JA01, The MEG Detector Japan, Italy, Russia (JINR, Novosibirsk), Switzerland Solenoidal magnetic spectrometer LXe for efficient  detection Drift Chamber for Positron detection Timing Counter for time measurement Drift Chamber Liquid Xenon Scintillation Detector COBRA Magnet Timing Counter

ER01/JA01, The MEG Detector Japan, Italy, Russia (JINR, Novosibirsk), Switzerland Solenoidal magnetic spectrometer LXe for efficient  detection Drift Chamber for Positron detection Timing Counter for time measurement Drift Chamber Liquid Xenon Scintillation Detector Timing Counter

ER01/JA01, Pion Betadecay at PSI Arizona, JINR, PSI, Tbilisi, Swierk, Virginia, Zagreb First phase: 0.8% accuracy Stopped pion experiment: 10 6  /s * 1 y beam time, relative measurement BR  = BR   e N   e.. corrections N  BR  °   BR  = (experiment) = (prediction) V ud = (experiment) = (PDG) FAFA = FVFV =

ER01/JA01, Ultra-cold Neutrons  Ratio of matter to radiation in the universe is n(B)/n(  )=10 -9 observed, but predicted  At the big bang time reversal symmetry was violated and therefore matter dominates over antimatter and the neutron should have an electric dipole moment Time reversal dd  

ER01/JA01, Measurement of the neutron EDM  G. Ban, Th. Lefort, O. Naviliat-Cuncic, G. Rogel 1 Laboratoire de Physique Corpusculaire, Caen, France  K. Bodek, St. Kistryn, M. Kuzniak 2, J. Zejma Institute of Physics, Jagiellonian University, Cracow, Poland  N. Khomytov, B.M. Sabirov, N.N. (to be confirmed!) Joint Institute of Nuclear Research, Dubna, Russia  P. Knowles, M. Rebetez, A. Weis Departement de Physique, Université de Fribourg, Fribourg, Switzerland  C. Plonka Institut Laue-Langevin, Grenoble, France  G. Quéméner, D. Rebreyend, M. Tur Laboratoire de Physique Subatomique et de Cosmologie, Grenoble, France  M. Daum, R. Henneck, S. Heule 3, M. Kasprzak 4, K. Kirch, A. Pichlmaier Paul Scherrer Institut, Villigen, Switzerland also at: 1 Institute Laue-Langevin, 2 Paul Scherrer Institut, 3 University of Zürich, 4 SMI Vienna