Transcript 0830_-_dudarev_-_Report_LCWS11

STATUS OF ILC ACTIVITIES AT JINR
J.Budagov, A.Dudarev, M.Lyablin, G.Shirkov, G.Trubnikov, A.Sissakian
JINR, Dubna, Russia
Presented by A.Dudarev
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MILESTONES OF ILC ACTIVITY AT JINR
Nov 2005 JINR Program Advisory Committee for Particle Physics
Proposal for ILC sitting near Dubna
Jan 2006 JINR Scientific Council
Recommended participation in ILC siting
Mar 2006 Committee of Plenipotentiaries
Approved the SC recommendation
Nov 2006 GDE, Valencia
Dubna site was approved as candidate
Apr 2007 Moscow region Governor
Supported JINR ILC initiative
Jun 2008 Dubna
European GDE and ILCS Conference
Dec 2008 GSPI (Project Institute)
Preliminary field engineering-geological studies along supposed ILC route
2010 – 2011 Moscow State University of Civil Engineering (MSUCE)
Graduate works on the ILC siting near Dubna
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JINR PARTICIPATION IN THE ILC TECHNICAL ACTIVITIES
JINR physicists contribute in several fields of activity in ILC:
• beam diagnostics
• photo injector prototyping
• advanced laser system for electron source
• new ideas and R&Ds in cryomodule conceptual design
• high precision large distance laser metrology
• ILC conventional facility and siting
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ADVANTAGES OF THE DUBNA SITE
• JINR as a basic scientific and organizational structure with international intergovernmental
organization.
• Prevalent legal practice makes it possible to get the land of the ILC location to permanent free use
just as it has been done for JINR, according to the agreement between JINR and the RF
government.
• The proposed territory is extremely thinly populated and free of industrial structures, rivers and
roads.
• The area is absolutely steady seismically and has stable geological characteristics.
• A flat relief and geological conditions allow to place ILC on a small depth (about 20 m) in the dry
drift clay and to perform construction of tunnels, experimental halls and other underground objects
with the least expenses, including cut-and-cover.
• Sources of the electric power of sufficient capacity: transmission line of 500 kV, the Konakovo
electric power station and the Udomlia atomic power plant.
• The developed system of transport and communication services, good highways and railways,
water-way (the Volga river basin).
• Presence of a modern network and information infrastructure, including one of the largest center in
Europe the “Dubna” Satellite Communication Center.
• A special the economic zone in Dubna provides preferential terms for development and
manufacture of high technology technical production.
• A powerful scientific and technical potential of Dubna makes it possible to involve additionally
specialists from world scientific centers into the international collective of highly-qualified scientific
manpower
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Detail of the geological cut for the Dubna sample site
together with soil boring profiles
• drilling of 3 wells in depth of 36.047.0 m with full core extraction;
• selection of 40 monoliths of soil, 16
samples of disturbed soil for
laboratory analysis;
• selection of 10 probes of ground
water for chemical analysis;
• gamma-ray logging, thermometry,
vertical seismic profiling, surface
seismic survey
• 35 points of vertical electric
sounding;
The obtained data (geological
structure and hydro-geological
conditions, geotechnical soil
properties, etc.) are favorable for
placing the linear collider in the
investigated territory. The results
contained in the GSPI Soil Boring
Report supports the positioning of a
site that is compatible with the
current ILC criteria in the Dubna
area and supports a near surface
design solution.
A. V. Kurnaev et. al. Report on the Results of the Preliminary Geological Engineering Surveys Along the
Supposed Route of the International Linear Collider (ILC) in Taldom Area of the Moscow Region, GSPI, Moscow
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Dubna Site Investigation
Initiated by JINR and supported by GDE
An Evaluation of a Proposed Site for the International
Linear Collider near Dubna,Moscow Region, Russia
JINR: Yu.Budagov, Yu.Denisov, A.Dudarev, G.Shirkov, G.Trubnikov
GSPI: V.Kozhanov, V.Sokolov
GDE: W.Bialowons, V.Kuchler, T.Lackowski, M.Ross, N.Walker
IDENTIFICATION OF OPTIMAL ILC LOCATION
FOR DUBNA SAMPLE SITE
Main goal of the work – to restrict size of the
area for further possible geological survey.
Main requirements for optimal location:
• minimal populated territory;
• engineering infrastructure of the territory
(roads, power sources, etc.);
• results of preliminary geological survey
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COLLABORATION WITH MOSCOW STATE
UNIVERSITY OF CIVIL ENGINEERING (MSUCE)
At present Moscow State University of Civil Engineering is a modern
scientific and educational centre implementing innovative technologies of
management and education.
The University is a national leader in the sphere of construction education
heading the Educational and Methodological Association of Russian High
Schools for Construction Education and the International Association of Higher
Construction Institutions uniting 142 universities of Russia and the CIS
countries.
This year 2 degree works dedicated to the ILC construction were
successfully completed:
• R.Nikonorov
Underground detectors hall for the International Linear Collider near Dubna
• A.Kosykh
Tunnels for the International Linear Collider near Dubna
Supervisors: Prof. M.Zertsalov (Head of Underground Engineering Department),
Prof. P.Lavdanskiy (Head of Nuclear Facility Construction Department)
Consultant: Prof. V.Almazov (Department of the Reinforced Concrete Structures)
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DIPLOMA WORKS STRUCTURE
1. Engineering geology (based on the GSPI results).
2. Architectural part (based on ILC RDR).
3. Mode of deformation calculation.
4. Technology of the underground structure
construction.
5. Arrangement and management of civil
engineering.
6. Environmental protection.
7. Life safety.
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LASER METROLOGY
V.Batusov, Yu.Budagov, M.Lyablin, A.Sissakian et al., Phys.Part.Nucl.Lett. 2007, v. 1, p. 150-156
JINR Preprints P13-2009-45, P13-2009-186
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Rel.Units
Duant photodiod signal(mV)
The main task of this R&D is to obtain an extended stable laser beam to be used as a
coordinate line for the high precision large distance metrology.
Earlier we detected a new phenomenon – laser ray space location stabilization inside
a tube with atmospheric air. Studies of the observed effect demonstrated its increase by
the order of magnitude, when the ends of the tube are covered with optical windows.
This observation indicates a possibility to stabilize the optical parameters of air by
standing acoustic wave. The sound produced by the standing wave is heard directly.
To confirm this new idea, we executed a direct measurement which gave positive
results. The left Figure demonstrates a standing acoustic wave and the right one shows
observations of the stable standing wave (Fourier analysis) with the main mode
frequency of about 2.5 Hz.
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DECREASING OF THE LASER RAY SCATTERING
We continued our measurements and obtained direct data on the laser ray
position stabilization in the closed tube.
The left Figure shows a σ(rms) in the beam location and the right figure – the
decrease of σ(rms) as an effect of the tube presence.
This figure demonstrates a
unique laser beam space
uncertainty σT(L) reached when
the beam was passing inside the
tube with the ends covered by
glass windows
This figure shows an
impressive gain R=σB(L)/σT(L) in
beam position precision σT(L) in
comparison to the σB(L) for the
case without the tube
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Now we suggest that the laser ray should be
used as an extended fiducial line for high
precision alignment of the detectors
(cryomodules) at very large distances.
This idea is based on the effects (we found)
of laser ray scattering decrease inside the tube
containing the standing acoustic wave.
The rights and methods of this discovery are
protected by the Russian Federation State
Patent № 2401986 20 Oct. 2010
A.Sissakian, Yu.Budagov, M.Lyablin, V.Batusov
«Laser beam formation device»
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FUTURE PLANS
To investigate the physics origin of possible interference of a
laser ray with the acoustic waves in the tube:
- laser beam space spread after passing in the vacuum tube;
- laser beam propagation inside a tube without standing waves;
- laser beam propagation inside a tube with resonance excitation
of the standing acoustic wave.
The planned experiments should answer the question of a
degree of the standing wave influence on the laser ray stability
after the beams passing through the tube.
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SUMMARY
The JINR is carrying out active work to develop international
cooperation in the ILC project.
JINR has successfully organized wide cooperation in Russia in order to
perform experimental and theoretical investigations on the project with
Russian research centers (BINP of Siberian Brunch of RAS, Institute for
Applied Physics, GSPI, MSUCE, Physical Institute of RAS etc.), JINR
Member States and other countries Institutions.
THANK YOU FOR ATTENTION