Saint-PetersburgSaint-PetersburgPNPI PNPI

WelcomeWelcome

V. F. EzhovPSTP 2011

12-16 September

GatchinaGatchina, , located 45 km south of

St. Petersburg, former residence of Russian

emperors

PNPI research directions:

• physics of elementary particles and fundamental interactions;• physics of atomic nuclei and nuclear reactions;• neutron physics;• solid state physics;• theoretical physics;• physics and engineering of reactors and accelerators;• molecular and radiation biophysics;• radiation medicine;• new techniques and experimental equipment

PNPI base facilities:

• 18 МW research nuclear reactor;• 100 МW research nuclear reactor (to be completed in 2013);• 1 GeV proton accelerator.

PetersburgPetersburgNuclear Physics Nuclear Physics Institute of RASInstitute of RAS

WWR-M reactor

ПИЯФ

PIK reactor

Accelerator

International Neutron Research CentreInternational Neutron Research Centre(Project)(Project)

1 GeV proton accelerator

PIK

PNPI

Polarized neutronsPolarized neutrons• Polarized He-3 target - neutron polarizer• Magnetic resonance – EDM of neutron• Magnetic trap – UCN neutron lifetime

Status of EDMStatus of EDM

experiment in PNPIexperiment in PNPI

Experimental scheme used in PNPI

Modernized PNPI EDM spectrometerPNPI – ILL collaboration

Waited accuracy

Atomic Magnetic moment in inhomogeneos magnetic field.

1922 – Stern and Gerlach

Vladimirskii, V.V. Magnetic Mirrors,

channels and bottles neutrons. Sov. Phys.

JETP 12, 740-746, (1961)

The main problems: 1. Filling and empting. If

one use superconducting system, then he can’t switch on field too fast.

2. Huge setup and small storage volume

=87710 s

Neutron lifetimeNeutron lifetimeLast results

Gravitational trap Magnetic trap

Expected accuracy of new projects

Thank you for Thank you for attentionattention

&&Welcome to PNPIWelcome to PNPI

Cosmology and Particle Physics &Cosmology and Particle Physics &

Neutron Experiments Neutron Experiments • Search for Neutron

Electric Dipole Moment (EDMn)

• Neutron lifetime• Neutron lifetime;

Correlation coefficients in neutron decay; EDMn

• Neutron lifetime• Neutron -

mirrorneutron oscillations

• Neutron diffraction in perfect crystals

• Experiments with ultracold neutrons (UCN)

• CP-violation - dominance of matter over antimatter

• Baryogenesis• Fundamental

interaction - Standard Model, Supersymmetry…

• Stellar Nucleosynthesis• Mirror Universes

• Gravitational vs inertial mass

• New forces & Search for Dark matter candidates