Transcript Слайд 1 - Nuclotron

Status and progress of the
Nuclotron-M project
MAC meeting
20 May 2009
G.V. Trubnikov
for Accelerator Division
1 stage: Nuclotron-M
Leaders: A.D. Kovalenko, G.V. Trubnikov
Deputy leaders: V.I. Volkov
Institute theme 02-00-1065-2007/2009
The goal – to reach by 2010 Nuclotron parameters necessary for
the NICA complex: accelerated heavy ions A~200, beam
intensity ~ 109 A/cycle (0.2-0.4 Hz) at energy ~ 3.5 GeV/u for U92+
The resolution of the section of Basic Facilities of JINR STC and TC from 18.12.2007:
«We propose the criteria of the project completion is the following: acceleration and
extraction of ion beam with А~100 (for example Хе) at the energy about 5 GeV/u and
intensity 107 p/sec…»
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Development of new injection complex
Modernization of RF system
Upgrade of diagnostics and beam control systems
Modernization of the vacuum system
Modernization of the electric- and cryo- supply systems
Development of the minimum required infrastructure
Approved staged development plan for realization
http://nucloserv.jinr.ru/nica_webpage/Nica_files/plan/PLANS/Plans.html
Всего ~ 150 позиций…
Heavy Ion Sources KRION-2, KRION-6Т (team of E.Donets)
It was performed 4 runs (one month each) in 2008 on the existing ion source KRION-2 (solenoid field 3T) with
the following results:
• Developed, manufactured and experimentally tested new electron gun with increased cathode diameter (1.2mm);
automatic system for regulation of the emitter current during one electron pulse; diagnostic system for the string
dynamics formation and ion trapping; new scheme of the cell for ion (the following gases: CН4, N2, O2 и Ar)
pulsed injection into the electron string for ion-ion cooling; new electron beam external modulator at 8 keV;
• It was provided series of experiments aimed to get highly-charged Xe ions at the continuous Xe-gas injection
into electron string. Ions of Xe36+ at electron energy Einj=3.7kV were obtained. It was found out that continuous
injection of Xe gas follows to the instabilities and cathode poisoning. It was realized that pulsed injection of the
Xe for the experiments is required and it is planned to use new tested cell (above mentioned), but unfortunately it
will be impossible to use ion cooling.
• It is planned to perform 4 experimental runs at the existing KRION-2 in 2009 in order to prepare KRION-2 for
operation in the Nuclotron run (autumn 2009) with ions Xe44+ (A=129, Z/A=0,341). – 2 already done, 3rd – will
start end of May
Progress with new ion source KRION-6T in 2008:
•All calculations and modeling works for the magnetic system and electron optics were successfully
performed; prototypes of the electron gun and electron reflector for KRION-6T were designed, constructed
and successfully tested at KRION-2; prototype of the external modulator aimed to operate at 16-18 kV
was constructed and successfully tested at 9 kV.
•Designed and manufactured elements of the electron drift tube and ion trap for the structure at 4,2K
•Designed and manufactured all main elements of the automatic spooling machine tool for manufacture of
superconducting solenoid coil, special software for the spooling process was created.
Designed, manufactured and tested all elements of the vacuum vessel for KRION-6T (the most important
and difficult – complex vacuum flanges). Vacuum system of the source is assembled and ready for the
vacuum tests. Developed and constructed non-oil vacuum pumping system for the KRION-6T, all
necessary elements are purchased and manufactured.
Assembled vacuum system and cryogenic vessel of the new source KRION-6T;
New automatic machine tool for solenoid coil spooling.
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Injector (LU-20) modernization
It is planned in 2009:
- dismounting of the linac vessel and
geodethy of all 59 drift tubes;
- new power supplies for correctors; done !
- commissioning of the operational
variant of the new synchronization
system for all linac control channels; done !
- exchange of some vacuum chamber
parts of the injection channel (new
fast vacuum shutters); - done !
- 2-3 dedicated runs at LU-20 – 1 had
been done!
Nuclotron vacuum system modernization
(Dr. H.Hodjibagiyan)
2 stages are planned in the frames of Nuclotron-M project: 1st - necessary
modernization for Nuclotron readyness, 2nd stage - modernization for NICA;
We assume that 1st stage of the Nuclotron vacuum system modernization is
completed in the sense of equipment installation (2 orders of magnitude improvement).
The realization of the 2nd stage has been started and now the main works are concentrated
in development of the automatic control system for the Nuclotron vacuum equipment for:
- remote switching ON/OFF and control by all vacuum equipment;
- measurement, delivery of information and visualization of the vacuum system
parameters;
- equipment protection during emergencies.
These works had been performed in close collaboration with Czech companies (Vacuum
Praha, FOTON) using modern electronic component. Works were started from design stage in
July’08 and had been completed in April’09 by commissioning of the system, budget of works
is about 100k$ - done!
Some modernization of the vacuum chamber parts had been performed.
The new pick-up station in the cryostat assembly is under completion – the design was
started in July’08, LHEP workshops manufactured all elements and assembled pick-up station.
Now we are starting the process of pick-up and fast shutters cryogenic measurements and after
end of tests those assemblies will be installed in the cryo-and RF-test-bench. – almost done!
The kit of 8 ionic pumps installed at Nuclotron in 1990-s were dismounted and transferred
in December’08 to Czech company Vacuum Praha for full modernization – done, on the way
back to Dubna.
Модернизация вакуумной системы (второй этап) – 8 апреля 2009г.
RF system modernization (O.Brovko)
The following scope of works was performed since end of 2008:
Completed all hardware works on the reconstruction of cable lines for the measurement of beam
orbit. Software will be ready by the beginning of the next run - ready in the middle of February’09;
- 3 existing pick-up stations (#2, 11 and 16) were totally revised and experimentally tested at room
and He temperatures and now are ready for the run at machine;
- special shielding for the 2nd RF station (RFS#4) and plugs of HV cables to this station were
manufactured and installed in a tunnel. This allows to decrease noise from RF on the beam signal
by factor of 10-15;
Works on the creation of new control system of RF and B (magnetic field) synchronization with
new digital synthesizer and accuracy of 0,01 Gauss are in the final stage and its prototype will be
tested in the coming run.
Beam slow extraction system at maximum energy
(V.I.Volkov)
Works on design of new high voltage power supply for the electro-static septum in the
LHEP design bureau were completed in autumn 2008, before simulation and modeling
works were performed. Prototype of such system was constructed and successfully tested
up to 190 kV (existing septum power supply allows to increase voltage up to 110 kV – it
corresponds to 2,3 GeV/n extracted beam).
Now all the elements of new power supply had been manufactured at LHEP workshops and
this system is under assembly.
We plan to install it to the slow extraction sector during the coming run in order to provide
experiments on beam extraction at energy 4 GeV/n.
Old one (existing in the tunnel)
New one (final tests before run)
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Modernization of the automation system for control, beam diagnostics
and monitoring of parameters of the accelerator complex. (V.Volkov)
- New Control System for the Main Magnet Power Supplies - Contract with Slovakia;
- New diagnostics commissioning;
- Full modernization of the inflector system (beam injection) with reserve kit of it for
non-stop operation;
- New kit of beam-bump power supplies commissioning;
- Full scale renewal of the Nuclotron server - Contract with Romania (50k$) - installing
- Commissioning of new power supply for beam orbit correctors, commissioning of 24
supplies in Autumn 2009, commissioning of 24 units more in the middle of 2010large Contract with Slovakian Institutes (175 kEuro for 2 years);
- R&D works on design, construction and installation of new elliptical pick-ups – R&D
- continuation of the beam orbit measurement and correction (with Bulgaria, Slovakia).
New Magnet Power Control
System (MPCS) assembled.
Final tests
Glassman power supplies kit
for beam bump in the b.1
Improvement of the power supplies, shielding and energy evacuation systems
of the lattice magnets and lenses (V.Karpinsky)
Run 39:
Very important stage – increase of the
magnetic field in magnets and lenses from
0.9 up to 1.4-1.5T using special prototype
of the energy evacuation system
Next stage – field increase from 1.4 up to
1.9 - 2T in the end of 2009 (using
exploitation EES)
Transfer point at b.1B
ESS kits (may 2008)
A lot of other works:
- Successfully designed, developed and tested
prototype of the power supply for current
increment in the F-lenses - done
- new system for magnet field control - done
- beam-bump power supply - done
- electric shield of the compressor cascade done
- modernization of main power supply 19TV and
20 TV (6kA, 300V) – in progress
- ....
New power scheme
Team of creators (December 2008). EES at b.1А
New commutation schemes
Improvement of the cryogenic supply system (prof. N.Agapov, V.Batin)
Completed Contract with KRIOGENMASH plant aimed on the total
modernization of the oil-cleaner unit for liquid Helium at KGU-1600 plant complicated 13-tonn system with cryogenic and high-pressure ingredients. The
budget of works is 110k$ and this work was successfully completed during JulyDecember 2008
Improvement of the cryogenic supply system (prof. N.Agapov, V.Batin)
Very large scope of works in collaboration with HELIIMASH Company and is
referred to the full scale modernization of other elements and units of the LHEP Heliquefier complex: large volume of welding and mechanical works, dismounting and
reconstruction of 12 grease (oil) separators and absorbers, re-filling those blocks with
new adsorbent powder, flushing and refining all those vessels, training and testing of
these vessels, refining of all He pipelines with special modern technology using
Freon gas. The total budget of these works is about 400k$. They were started in
August 2008, end – May 2009.
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“Wet” turboexpander (frequency 300000 turns/min)
- 6 units were fixed by now
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Personnel of JINR and HELIIMASH during
dismountig works at KGU-1600
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Extracted beam transport channels and their radiation shielding
(P.Rukoyatkin, A.Alfeev, A.Kochurov)
- Extracted beam profilometers (first half of extraction channel) were re-designed and reconstructed;
diagnostic system for the extracted beam intensity measurement was revised and reconstructed;
- Large volume of work was performed in the field of control and measurement of the coil current in
magnets and lenses of beam transportation channel. Before we had only tools for manual
measurement of magnet parameters.
- By February 2009 the new automatic system (industrial PC, 32-channel block, active filter
modules, cable lines, complex software) for measurement and control of coil current will be
commissioned and used by operation personnel (accelerator and experimental physicists)
during the run. It will help to have detailed information about unstable work of magnetic optic
elements.
- 32 neutron detectors in experimental halls (1 and 205) were totally graduated and metrological
attestation was performed for all them
Development and creation of a high-intensity polarized deuteron source
(V.Fimushkin)
We continue collaboration works with INR (Troitsk) on the development of the new high-intensity
polarized deuteron source, and signed an addendum for work prolongation in 2009. We plan to complete
TDR documentation in this year and start construction of some elements at INR.
Simulation, modeling and design of different elements of the future source is in active phase at
LHEP.
Experimental hall for the future test bench with that source is prepared at LHEP building 203A,
preparation electrical and water-cooling works were performed.
It is purchased part of necessary vacuum equipment (turbomolecular pumps) for the SPD
realization in 2009 – delivery in August 2009
We continue geodetical measurements in the Nuclotron tunnel
(which we started 1 year ago) in order to monitor alignment of
the ring optic elements.
- Large scope of infrastructure
(fixing and construction works)
was performed since June 2008
- Water cooling and energetic
systems are under
modernization (collaboration
with Bulgaria on automatization
of water systems, reconstruction
of power station, etc)
Total budget is about 150 k$
New water pump (self-filtering)
system – installed in autumn 2009.
Successfully tested and
commissioned in April 2009.
Run № 39
• Start - Spring 2009 (300-400 hours)
(actually it was started – run with beam at LU-20, fullscale CHP (cryogenic) test. Circulating beam is
expecting.
• Main task - successful technological commission and
launch of complex system after large-scale
reconstruction
• Program:
– Preparation, tuning, tests ~ 200 hours.
– Physics shifts ~ 100-200 hours.
– Deutrons
Run № 40
• Start: Nov 2009 (400-900 hours).
• Main accelerator task – achievement of project field
(1.8-1.9 T), generation and acceleration of heavy ions
with maximal possible (!) intensity, probably beam
extraction with possible efficiency.
• Program:
– Preparation, methodical shifts ~ 200-300 hours;
– Physics experiments ~ 200-700 hours;
– Particles - Xe, deutrons
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Key moments and expected results on the current stage of the project
It is planned to provide the next run at Nuclotron in Spring 2009 when all
reconstructed systems will be installed in accordance with technological
requirements. Main goal for the run is commissioning of developed and
installed systems – stable operation of Nuclotron complex with new Control
System for the Main Magnet Power Supplies (MPSC); machine operation will
be tested with new evacuation system at magnetic field 1.4-1.5T; very
important is to perform full-scale tests of the reconstructed cryogenic
system. Accelerator and methodical shifts will have the first priority, run
duration will depend on the dates of start. It is planned also to commission
new diagnostics (automatic measurement of the beam orbit, new pick-up
station) – this is perspective task and it has to be actively developed in
parallel with modernization of technological systems. If some hours will be
given for physicists – it is planned to have accelerate deuteron beams.
Сообщения ОИЯИ, Р9-2009-38
«Ход реализации проекта Нуклотрон-М
(по итогам сеансов 37, 38)»
Объединенный институт ядерных исследований, Дубна:
Агапов Н.Н., Алфеев А.В., Андреев В.А., Базанов А.М., Батин В.И., Блинов Н.А.,
Бровко О.И., Бутенко А.В., Василишин Б.В., Волков В.И., Говоров А.И,
Донец Е.Д., Донец Е.Е., Донец Д.Е., Елисеев А.В., Иванов Е.В., Иссинский И.Б.,
Карпинский В.Н., Кекелидзе В.Д., Кириченко А.Е., Коваленко А.Д., Козлов О.С.,
Мешков И.Н., Михайлов В.А., Мончинский В.А., Никитаев П.И., Осипенков А.Л.,
Романов С.В., Рукояткин П.А., Сальников В.В., Селезнев В.В., Семин Н.В.,
Сидорин А.О., Сисакян А.Н., Слепнев В.М., Смирнова З.И., Сорин А.С.,
Трубников Г.В., Фатеев А.А., Фимушкин В.В., Ходжибагиян Г.Г., Царенков А.П.,
Шабунов А.В, Шутов В.Б.
Институт ядерных исследований и ядерной энергетики БАН, София, Болгария:
Ангелов А., Ангелов В., Гешков И., Динев Д., Цаков И., Стаменов Й.,
INOE 2000, Бухарест, Румыния:
Савастру Д., Сорин М.
Институт Проблем Измерений САН, Братислава, Словакия:
Ондриш Л.,
Карлов Университет, Чехия:
Фингер М.
Руководители проекта: Г.В.Трубников, А.Д.Коваленко
Заместитель руководителя проекта: В.И.Волков
Thank you for your attention