1. Status and results of Novosibirsk accelerator complex
Budker Institute of Nuclear Physics
Status and results of Novosibirsk accelerator complex
Pavel Logachev, ICPPA’17

2. Particle Physics at Budker INP
A few generations of the colliders and detectors
Collider E, Gev Detectors Operation
VEP-1 (e-e-) detectors
VEPP detectors
VEPP detectors
(booster and Nucl. Phys)
VEPP OLYA, MD
VEPP-2M OLYA, TOF,ND
CMD, SND, CMD-2
VEPP-4M KEDR
VEPP SND, CMD
Tau-Charm ? 2

3. BINP’s colliders: 2E=0.3-11.0 GeV (5 quarks of 6!) 2Е=2.0-5.0 GeV

4. VEPP-2M Collider Complex
operated ;
Lmax=4x1030cm–2sec–1 at E0=510 MeV; Total integrated luminosity 80 pb–1.
Some results:
- Development of the resonant depolarization technique for precise measurements of
particles masses (from 1975)
- Detailed study of K, , , and - mesons (precise measurements of parameters, rare
decays and etc)

5. Results of e+e– annihilation cross section measurements by SND and CMD-2 detectors at VEPP-2M presicion now is ~1% and will be improved to ~0.3% at VEPP-2000!
These measurements are necessary for determination of g-2 and  5

6. +(g-2/EDM experiment at JPARC) e+e-  hadrons measurements !
g-2 measurements 
Theory
BNL
Expected precision
at Fermilab
4 times better!
+(g-2/EDM experiment at JPARC)
New challenge for
e+e-  hadrons measurements !
Fermilab

7. Injection Complex and beam transfer lines
Injection Complex VEPP-5 providing both BINP colliders VEPP4M and VEPP-2000 with the electron and positron beams
Achieved Parameters (2016):
Energy: MeV
Storage rate 12.5 Hz: 4.0·1010/s (70 mA/s)
Storage rate 12.5 Hz:
4.0·109/s (7 mA/s)
Max. beam current e- : mА, 4.2·1010 particles
Max. beam current e+ : mA, 2.9·1010 particles
Beamline to VEPP-4M m
Conversion
System
Beamline to VEPP-2000
250 m
VEPP-4M
BEP
Injection Complex and beam transfer lines

8. VEPP-2000 e+e- collider @ Novosibirsk
VEPP-2000 complex
K-500 beam transfer channel
BINP Injection complex
Design 1 GeV
Circumference
24.39 m
Number of bunches
1×1
Betatron tunes
4.1/2.1
Beam-beam parameter
0.1
Beam energy range
160  1000 MeV
Number of particles
11011 IP
8.5 cm
Luminosity
11032 cm-2s-1
Final focusing 13T solenoids
Commissioned in 2009 with old injection chain.
Data collection
Upgrade (new injection complex, booster top energy increase).
Injection chain commissioning 2016, regular operation 2017.

9. VEPP-2000 re-commissioning
Stacking rate 2× MeV
(×10 in comparison to old system)
K-500 transfer channel and scintillator screen
I, mA
Beam VEPP-2000
e+ e test “warm” VEPP-2000
20/21

10. Round Colliding Beams @ VEPP-2000
World record beam-beam parameter value achieved:
 ~ 0.12/IP
Averaged luminosity (CMD-3 data, )
Limited e+
production rate
Target luminosity integral: 10 times higher, 1fb-1 (now achievable with new injector)

11. Physics at VEPP-2000 Study of hadronic cross sections
e+e– →2h, 3h, 4h …, h= ,K,,…
Precision measurement of
R=(e+e– → hadrons)/ (e+e–→+–)
Study of light vector mesons excitations: ’, ’’, ’, ’,..
Comparison of the energy dependence of e+e– → hadr. (I=1) cross sections with spectral functions in t -decays
Measurement of the nucleons electromagnetic form factors and search for NN- resonances
Study of e+e– -annihilation into hadrons at low energy by radiative return (ISR)
Two-photon physics
High order QED processes
At least 10 years of very interesting physics in future !

12. SND at VEPP-2000 Advantages for VEPP-2000:
1 – beam pipe, 2 – tracking system, 3 – aerogel, 4 – NaI(Tl) crystals, 5 – phototriodes, 6 – muon absorber, 7–9 – muon detector, 10 – focusing solenoid.
Advantages for VEPP-2000:
1- cherenkov counter, n=1.05, 1.13 –
e/pseparation E<450 MeV, p/K
separation E<1 GeV,
2 –drift chamber – better tracking

13. Detector CMD-3 Mu
LXe ДК ZК
TOF
CsI
BGO

14. Some new results from SND and CMD-3
e+e-  pp
e+e-  NN
e+e-  nn _

15. ОБНОВИТЬ e+e-  6π by CMD-3 BaBar CMD-3 Phys.Lett. B723 (2013) 82-89
Phys.Lett. B723 (2013) 82-89 15

16. Center-of-mass energy, GeV
SND results in 2016
Five processes of e+e– →hadrons were studied by SND in 2016: e+e– →π0γ, K+K–, π0π0γ, π+π–π0η, ωπ0η.
Cross sections of the processes e+e– →π+π–π0η and ωπ0η were measured for the first time.
e+e– →ωπ0η
e+e– →π+π–π0η
Center-of-mass energy, GeV

17. VEPP-4M Collider 4. Detector KEDR 2Е=211 GeV L=2х10**30 см-2с-1
ROKK-1M
2Е=211 GeV
L=2х10**30 см-2с-1
L= 8х10**31 см-2с-1

18. Detector KEDR
L= 21 pb-1 was collected: study of - mesons, D-mesons, -lepton,
R-measurements and etc.
– upgrade and repair
next run

19. VEPP-4M and KEDR detector
The luminosity of VEPP-4M is lower than at B-factories
But some advantages:
Large energy region 2Е=211 GeV
Technology of high precision measurement of the beam energy (concentration on high precision particle mass measurement).
Detector KEDR equipped by LKr calorimeter with high energy and space resolution.
High resolution tagging system (two-photon physics).
Physics at VEPP-4M & KEDR is concentrated on high precision measurements
High precision measurements of particle masses:
J/, (2S), (3S), D-mesons, -lepton, (1S) (2S) (3S), Y(4S)
Spectroscopy of cc and bb states
The measurement of R in the energy region 2E=2-7 GeV
Two photon physic: total cross section hadrons ,
study of C-even states

20. High precision measurements at VEPP-4M&KEDR
VEPP-4M energy calibration
Resonance depolarization
Compton backscattering
J/, (2S), (3S), D-mesons, -lepton masses and some other parameters of these particles have been measured with best precision using these methods
Best known
particle masses 

21. Super Charm-Tau Factory
Detector
Existing new injector complex
(in 2013 – operation with positron beam)
е-е+ convertor
Linac 2 GeV
Two rings
Ист.е-
Linac 500 MeV
Ист.е-
Tunnel for 2 GeV Linac is ready
Damping
Ring
Two rings
Crab waist
L = 1×10**35 cm-2s-1,
Variable energy Ecm= 2 – 5 GeV
Longitudinal polarization

22. Super C/tau Factory at Novosibirsk (physics)
► D-Dbar mixing
► CP violation searches in charm decays
► Rare and forbidden charm decays
► Standard Model tests in  leptons decays
► Searches for lepton flavor violation t→mg
► CP/T violation searches in  leptons decays
Requirements: L > 1035 cm-2 s-1, longitudinal polarization, General Purpose with perfect PID

23. Polarization at Super C/tau Factory
If even one beam polarized,  almost 100% longitudinally polarized near the threshold
Michel parameters
CP-violation in -decays
Polarization may increase sensitivity by several times!

24. Artistic view of future Charm-tau factory
Accelerator Complex MEuro
Detector MEuro
Buildings infrastructure – MEuro
BINP has already invested 37 MEuro in the capital
construction and injection complex

25. Super Tau-Charm factory project status and plans
Project was preliminary approved by Russian Government (2011)
CDR –has been completed (2012)
Road map –is ready (6 years for realization)
Very positive statement of ECFA (2012)
Collaboration is growing (now 10 Institutes from
Russia and 9 Institutes from other countries)
Design of the building has been completed (2013)
Conceptual model for computing is ready (2013)
for machine and detector in progress
Injection complex construction in progress
Very positive reply of EU review Committee (2013)
Funding decision and construction ?

26. Conclusion
A few generations of colliders and detectors successfully operated at Budker INP with world-wide recognized contributions to particle physics
VEPP-4M and VEPP-2000 with 3 detectors are in operation at present interesting physics in the coming years
Budker INP successfully collaborates in a few outstanding experiments outside
Super Tau-Charm is the future (but funding approval is necessary!)