Transcript Warm Greetings from RRCAT SCRF Cavity Related R&D in RRCAT, Indore, India Satish Chandra Joshi Raja Ramanna Centre for Advanced Technology, Indore, INDIA S C Joshi.

Warm Greetings from RRCAT
SCRF Cavity Related R&D in
RRCAT, Indore, India
Satish Chandra Joshi
Raja Ramanna Centre for Advanced Technology, Indore,
INDIA
S C Joshi at KEK Dec 17, 2007
(Other Team members (partial list): S B Roy, PK
Kush , J Dwivedi, P Shrivastava, S Krishnagopal ,
TA Puntambekar, P Khare, AM Puntambekar…)
RRCAT, Indore and other Collaborative Institutes.
S C Joshi at KEK Dec 17, 2007
Major Accelerator
Centres of India
IUAC
Bhubaneshwar
IOP
Major Accelerator Centres in India
• Raja Ramanna Centre for Advanced Technology,
Indore
(Indus-1 & Indus-2 SRS, 10 MeV Industrial Linac, DC Accelerator etc.)
• Variable Energy Cyclotron Centre, Kolkata
(224 cm Variable Energy Cyclotron, K-500 SC Cyclotron Accelerator, RIB facility
etc.)
• Bhabha Atomic Research Centre , Mumbai
(7 MV FOTIA, 10 MeV e- Linac for Radiation Processing etc.)
• Inter University Accelerator Centre, N Delhi
(15 MV Palletron & SC Linac Modules for energy augmentation etc.)
• Tata Institute of Fundamental Research, Mumbai
(14 MV Palletron, SC 150 MHz QWR based Linac Booster for energy gain)
• Institute of Physics, Bhubaneshwar
(3 MV Tandem Palletron Accelerator mostly for Materials Science)
S C Joshi at KEK Dec 17, 2007
Centre for Advanced Technology, Indore
Accelerator Programs in RRCAT
 Operation of Synchrotron Radiation Source Indus-1
 Indus-1 Utilization
 2.5 GeV Synchrotron Radiation Source Indus-2
(beam storage experiments are now in progress)
 Medical & Industrial Accelerator Development
 100 MeV Proton LINAC Development (Proposed)
 Prototype subsystem development for 1 GeV Rapid
Cycling Proton Synchrotron for SNS (Proposed)
 RRCAT-CERN Collaboration
 Assistance to University Centers for Accelerator
 Mangalore University
Microtron
S C Joshi at KEK Dec 17, 2007
SCHEMATIC VIEW OF INDUS COMPLEX
Booster Synchrotron
(700 MeV)
(Started in 1995)
Microtron
TL-1
(20 MeV)
(Started in 1992)
TL-2
TL-3
Indus-1
(450 MeV, 100 mA)
Indus-2, 2.5 GeV SR
(Working since 1999)
(Trials to store the beam began)
December 2005
Hallmark of Our SRS Program is
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Intense focus on indigenous development &
qualifying sub systems through home efforts.
These include the magnets & their power
supplies, vacuum chambers, ion pumps &
gauges, beam diagnostic accessories, RF
driver and control systems etc.
Vendor development for many high quality
components for these accelerators.
Status:Indus-2, TL-3 Fully
Integrated;~70
mA accumulated.
S C Joshi
at KEK Dec 17, 2007
Injection @550MeV, beam energy ramped up to 2.4 GeV.
700 MeV Booster Synchrotron
Indus-1 Hall, Beam-lines, TL-2 & TL-3
(Indus-1 is a 450 MeV 100 mA Storage Ring)
Towards
Indus-2
TL-3
TL-2
Indus-1 Beam-lines : Monochromators
used & wave lengths covered (in A)
1. Reflectivity – TGM (40 – 100A)
2. Photo physics – SN (500 – 2000A)
3. Angle resolved PES – TGM (40 – 1000A)
4. High resolution VUV Bl – RC (700 – 2000A)
5. Angle integrated PES – TGM (60 – 1600A)
6. Photoabsorption (PASS) – PGM (17 – 225A) $
$
Under construction
S C Joshi at KEK Dec 17, 2007
Assembly of Indus-2 Ring in the Tunnel
RF Cavities installed in Indus-2 Ring
Long Straight Section LS-6 Assembly
Transport Line-3 Joining on to Indus-2
S C Joshi at KEK Dec 17, 2007
Beam-lines being built/designed/planned
Range (KeV)
Groups
5 – 25
RRAT
2 – 20
RRCAT
10 – 70
BARC
(Installed)
5 – 20
BARC
Grazing incidence mag scattering (#)
5 – 15
SINP, Kolkatta
PES (With high resolution at ~6keV) (#)
.8 - 15
BARC
Small angle X-ray scattering (SAXS)
8 - 16
BARC + IGCAR
Protein Crystallography
6 – 25
BARC + UGC-DAE-CSR
White-beam lithography
1 – 10
RRCAT
MCD/PES on bending magnet
0.03 – 4
UGC-DAE-CSR
Medical imaging beam-line
10 – 35
BARC + UGC-DAE-CSR
IR-beam-line
2 – 100 m
BARC
Undulator-MCD
0.1 – 1.5
RRCAT
X-ray beam diagnostics
6.2
RRCAT
Visible beam diagnostics
Visible
RRCAT
Being built
XRD powder diffraction
(Installed)
XRF-microprobe
Energy Dispersive – XRD
EXAFS
(#)
Being designed
Planned
S C Joshi at KEK Dec 17, 2007
(# Action towards beam line installation in experimental hall has started )
Major Events in 2006 (III)
Prototype Front-end of
Indus-2 Beam-line Built
First front end on XRD
BL Indus-2 installed
Experimental operation @ 2 GeV
S C Joshi at KEK Dec 17, 2007
Major Events in 2006 (IV)-XRD BL Progresses
First x-ray diffraction record with SR from
Indus-2 using XRD BL12 on Sept 28, 2006;
Indus-2 beam energy was 2 GeV & current ~4
mA. DCM was aligned to get monochromatic
SR out but calibration was still on. Collecting
and focusing mirrors were not yet in place.
S C Joshi at KEK Dec 17, 2007
Major Events in 2006 (VI)- EXAFS BL Installed
S C Joshi at KEK Dec 17, 2007
Major Events in 2007 (I)- Work on PES BL Started
Main parameters
Energy range
:
Resolution
: ~ 10-4
Overall Pressure :
Crystals
0.85 keV to 15 keV,
< 5x10-10 mbar
: (1) Si (111), 2d = 6.271 Å ,
(2) Beryl (1010), 2d = 15.954 Å
Spot on Sample :~ 250 m x 250 m
Salient Features:
• Home built DCM, slit assemblies &
HSA for electron-energy analysis.
• All subsystems computer controlled.
• Sample temperature 10 - 1100 K.
• Insitu thin film preparation facility.
• Pre-characterization by LEED/ AUGER
• Arrangement for depth profiling.
• Software developed for data acquisition
S C Joshi at KEK Dec
17,analysis.
2007
and
International Collaborative Program on ILC/X-FEL
at
Raja Ramanna Centre for Advanced Technology, Indore,
India
The ILC R&D activities at RRCAT form part of bigger program
of Indian DAE Institutes. It encompasses
1. Indian participation in accelerator design for ILC.
2. Superconducting Materials R & D for SRF Acceleration related
research.
3. Superconducting Radio Frequency (SCRF) Acceleration Science
and Technology, including setting up test facilities that would
be useful for High Current Proton Driver.
4. General Accelerator Science and Technologies, including
conventional and Free Electron Lasers.
Partner institutes:
(Indian DAE): RRCAT, BARC, VECC, TIFR; (Others) IUAC & DU.
S CUSA
Joshi at
Dec 17,Japan
2007
(Overseas) FNAL, SLAC,
&KEK
KEK,
Areas of Collaboration:
Superconducting RF Cavities and Cryomodules for ILC/X-FEL.
High Intensity Proton Accelerator & other facilities using similar
SRF Technology.
All Solid State Long Pulse Modulator Technology.
1.3 GHZ RF Test Stand with Waveguide Distribution.
Background:
Indian Institutes and FNAL have been collaborating on High Energy
Physics Fixed Target Experiments (E706 and D0) since 1985.
India has contributed to LHC & CMS, ALICE detectors at CERN.
India has “Observer State” status at CERN.
India is contributing to CLIC Test Facility3 & Linac4 at CERN.
S C Joshi at KEK Dec 17, 2007
New Programs Related to ILC / SCRF
Cavity Development at RRCAT
1. Development of SCRF Cavity & Associated
Technology & their Applications.
2. Participation in International Collaboration
S C Joshi at KEK Dec 17, 2007
R&D Methodology for Development of
SCRF Cavity
• Design SC-RF cavity structures + beam physics.
• Fabricate SC-RF cavity structures & also try new
designs.
• Establish facility for Chemical and thermal treatments of
SC-RF cavities .
• Evaluate and characterize superconducting materials.
• Establish Cavity testing & characterization facility
• Study Surface science of superconductors; New
materials for SCRF Cavities.
• Pursue R&D in cryogenics & RF aspects.
S C Joshi at KEK Dec 17, 2007
R&D Activity on SCRF Cavity Structure (Kick-off)
Development of 1.3 GHz TESLA Type single cell cavity
• Structure design
• Die & punch Design for cavity half cell
• Tooling Development for cavity half cell machining
• RF Frequency measurement
• Welding setup for Single Cell Cavity
• Frequency tunning setup for single cell
S C Joshi at KEK Dec 17, 2007
Simulation of Single Cell SCRF Cavity
Electric field along the axis
Electric field along the axis
S C Joshi at
KEKalong
Dec 17,the
2007
Magnetic
field
axis
Magnetic field along the axis
Cool down from 300 -2K
Forming Simulation of Half Cell
S C Joshi at KEK Dec 17, 2007
Forming Tryouts of 1.3 GHz Half Cell in Cu
Forming Die & Punch
Forming of Half Cell in 3 mm Cu Sheet
S C Joshi at KEK Dec 17, 2007
New Additional Facilities Planned to be Set Up at
RRCAT
Put up SCRF cavity fabrication infrastructure (like, Hydraulic Press, Facility
to make parts of Nb cavities, EBW Machine etc.), plus chemical processing
facilities ( eg, EP/BCP/BP, HPR & Annealing Furnaces etc.), assembly &
testing set up. (Clean-room, Test cryostats, RF sources etc.)
Add to cryogenic infrastructure, (Bigger Liquid He Plant, Liquid N2 Plant
and Accessories for Larger Cryogen & Gas Handling Systems etc.)
Augment experimental facilities for superconducting materials research.
Add to presently available (magnetic, electrical & thermal conductivity
measurements) new set ups (UTM, Eddy Current Scanner, SIMS, SEM &
Auger Spectroscope etc.)
Build an infrared source to give coherent radiation at wavelengths down to
~30 microns, using a superconducting post-accelerator.
S C Joshi at KEK Dec 17, 2007
Plan for SCRF Cavity Processing / Clean Room Facility
Proposed Clean Room Facility
S C Joshi at KEK Dec 17, 2007
Class-10
75 sq m
Class-100
125 sq m
Class-1000
80 sq m
Class10,000
250 sq m
Proposed EBW Facility
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Major Specifications
Electron Gun– 15 kW – 70 kV,
Welding chamber 3000 mm (L) x 1000 mm (W) x 1200
mm (H) with two Cryogenic pumps and run out platform.
Y axis, by the Electron Gun, 200 mm travel, CNC
controlled.
X axis, by the worktable, 1300 mm travel, CNC
controlled.
CNC Rotary Manipulator with tail stock
Tilting system, 0° to 90°
General Control System with CNC
S C Joshi at KEK Dec 17, 2007
Engineering Facilities at RRCAT
4 axis - Turn Mill Centre
UP-65 Spinner, Germany
Working Range: 210 x 640 mm,8-Live tools, C-Axis
Positional accuracies < 1 micron, Run-out < 1 micron
CNC- Siemens 840D with AUTO turn
3-Axes coordinate measuring machine
Measuring capacity-600 x 500 x400 mm,
Measuring Accuracies: Linear-1.5+ L/300 micron.,
Vol.-2+L/250
micron.
CNC Controller, Free form Digitizing.
Hydraulic Press
Hydraulic press capacity: 100 T
Main
table size of press: 1000mm x 800mm. Working
height is 710mm.
Die cushion
tonnage:30 tons, stroke: 150 mm
S C Joshi at KEK Dec 17, 2007
Cryogenics Facility at RRCAT
Liquid Helium Plant
Liquid Helium Plant : Make M/s Linde
Model
: TCF 20
Installed capacity : 40 Lit/ hr
Annual production : 70,000 liters
(on user requirement)
Liquid Nitrogen Plant
Liquid Nitrogen:
A) Liquid Nitrogen Plant: Make M/s Linde
Model
: Linit 50
Installed capacity : 40 Lit/ hr
B) Liquid Nitrogen Plant : Make M/s Philips
Installed capacity : 20 Lit/ hr
Annual Consumption touches 60,000 liters
S C Joshi at KEK Dec 17, 2007
4.2 K Cryogenic Test Station
For LHC 2000 magnets tested at 4.2 K in a duration of about 3 years
To meet the requirement Testing facility was developed with
magnet testing Capacity of 100 Magnets/ month
Power Converter
3V-1200 Amp
S C Joshi at KEK Dec 17, 2007
Decapole- Octupole Corrector
Sextupole Corrector
Magnet (MCDO): 636 Nos
Magnet (MCS): 1142 Nos
S C Joshi at KEK Dec 17, 2007
Future Plans for Enhancement of Cryogenics
Facility at RRCAT
• Approx. 200 lit/hr Liq Helium Production/ with
Approx. 5,000 – 10,000 Lit storage
• Development of 2K Cryostats
• Development of SCRF cavities testing faculty
• Approx. 400 lit/hr Liq Nitrogen Production
S C Joshi at KEK Dec 17, 2007
Ongoing R&D on SC Materials Useful for Accelerators:
1. RRCAT Team is studying differently processed Technical- Nb
materials. Idea is to find out what all enhances or degrades SC
properties, to help build cavities with highest gradient.
2. Later try new materials : MgB2 , Nb3Sn, V3Si , MoRe-alloys etc.
Questions being asked:
Is there any definite dependence of Hcritical on,
•the methods of sample preparation, grain size ?
•the surface treatment– EP versus BCP ?
•the annealing temperature and time ?
Experimental tools used:
Magnetometry : SQUID magnetometer and VSM.
Surface studies : SEM.
Thermal properties– thermal conductivity & Sp. Heat.
Joshi at KEK Dec 17, 2007
RF surface resistanceS Cmeasurement:
Future plan.
Experimental Facilities at RRCAT for Superconducting
Materials
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16 Tesla Cryo-magnet with variable temperature insert (Oxford
Instruments, UK) for physical properties measurements.
Thermal properties (specific heat, thermal conductivity, thermoelectric
power) measurements system (PPMS, Quantum Design, USA) in the
temperature range 2-300 K and in the presence of magnetic fields up
to 9 Tesla.
Home made ac-susceptibility measurement system in temperature
range down to 77K. This facility is now extended to 4.2K using a new
helium cryostat.
Temperature dependent electrical conductivity measurements down to
77K using liquid nitrogen cryostat and down to 35K using a locally
made closed cycle refrigerator.
Home made Differential Scanning Calorimeter (DSC) working down to
77K.
Argon arc furnace for synthesis of metallic alloys and intermetallic
compounds
S C Joshi at KEK Dec 17, 2007
S C Joshi at KEK Dec 17, 2007