Transcript Case for INDIGO

LIGO-India
An Indo-US joint mega-project concept proposal
by
IndIGO
(Indian Initiative in Gravitational-wave Observations)
Version: TS Jun 9, 2011
GW Astronomy with Intl. Network of GW Observatories
1. Detection confidence 2. Source direction 3. Polarization info.
GEO: 0.6km
LIGO-LHO: 2km, 4km
VIRGO: 3km
TAMA: 0.3km
LIGO-LLO: 4km
LIGO-Australia?
LIGO-India ?
Laser Interferometer GW Observatory
40 kg
Fused silica
mirrors
(USA)
Optics & controls
(USA)
180 W
(Germany)
Fig from LIGO-AUS report?
Era of Advanced LIGO detectors: 2015
If retained get better res picture
Gravitational wave Astronomy :
Synergy with other major Astronomy projects:
• SKA: Radio : Pulsars timing,
• X-ray satellite (AstroSAT)
• Gamma ray observatory
•Thirty meter telescope: gamma ray follow-up,…
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Courtesy: B. Schultz, GWIC Roadmap Document 2010
INDIGO: the goals
•
Major experimental science science initiative in GW astronomy
 LIGO-India (Letter from LIGO Labs)
– Advanced LIGO hardware for 1 detector shipped to India.
– India provides suitable site and infrastructure to house the GW observatory
– Site, two 4km armlength high vacuum tubes in L config.
– Indian cost ~Rs 1000Cr
 Earlier plan: Partnership in LIGO-Australia (a diminishing possibility)
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Advanced LIGO hardware for 1 detector shipped to Australia at the Gingin site, near Perth. NSF approval
Australia and International partners find funds (equiv to half the detector cost ~$200M) within a year.
Indian partnership at 15% with full data rights.
• Consolidated IndIGO membership of LIGO Science Collab.
+ propose creating a Tier-2 data centre for LSC in IUCAA + IUSSTF IndoUS joint
Centre at IUCAA with Caltech (funded)
• Provide a common umbrella to initiate and expand GW related
experimental activity and training new manpower
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3m prototype detector in TIFR (funded). Unnikrishnan
Laser expt. RRCAT, IIT M, IIT K | High Vaccum & controls at IPR, BARC, ISRO, ….
UG summer internship at Natn. & Intl GW labs & observatories.
Postgrad IndIGO schools, specialized courses,…
Multi-Institutional
Consortium
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IUCAA
TIFR
RRI
RRCAT
IPR
CMI
Delhi University
IISER Kolkata
IISER Trivandrum
IIT Chennai
IIT Kanpur
Jamia Milia
The IndIGO Consortium
IndIGO Council
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Bala Iyer
Sanjeev Dhurandhar
C. S. Unnikrishnan
Tarun Souradeep
( Chair)
(Science)
(Experiment)
(Spokesperson)
Data Analysis & Theory
Instrumentation & Experiment
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C. S. Unnikrishnan
Rana Adhikari
Sendhil Raja
Anil Prabhakar,
Pradeep Kumar,
Suresh Doravari
Ajai Kumar
Ranjan Gupta
Jiwan Mittal
S Shukla
Raja Rao
G Rajalakshmi
Biplab Bhawal
TIFR, Mumbai
Caltech, USA
RRCAT, Indore
EE, IIT M
EE, IIT K
Caltech, USA
IPR, Gandhinagar
IUCAA, Pune
RRCAT, Indore
RRCAT, Indore
ex RRCAT consultant
TIFR, Mumbai
Independent(Google)
RRI, Bangalore
IUCAA, Pune
TIFR, Mumbai
IUCAA, Pune
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Sanjeev Dhurandhar
IUCAA
Bala Iyer
RRI
Sukanta Bose,
Wash. U., USA
B. S. Sathyaprakash
Cardiff University, UK
Anand Sengupta
Delhi University
Archana Pai
IISER, Trivandrum
Sanjit Mitra
JPL, Caltech  IUCAA
K G Arun
Chennai Math. Inst., Chennai
P Ajith
Caltech , USA
Rajesh Nayak
IISER, Kolkata
A. Gopakumar
TIFR, Mumbai
Soumya Mohanty UTB, Brownsville , USA
Badri Krishnan
Max Planck AEI, Germany
Tarun Souradeep IUCAA
T R Seshadri
Delhi University
Patrick Dasgupta
Delhi University
Sanjay Jhingan
Jamila Milia, Delhi
L. Sriramkumar,
Phys., IIT M
Bhim P. Sarma
Tezpur Univ .
IndIGO structure
Committees:
International Advisory Committee
Rana Adhikari (LIGO, Caltech, USA)
David Blair (AIGO, UWA, Australia)
Adalberto Giazotto (Virgo, Italy)
P.D. Gupta (Director, RRCAT, India)
James Hough (GEO, GWIC Chair; Glasgow, UK)
Kazuaki Kuroda (LCGT, Japan)
Harald Lueck (GEO, Germany)
Nary Man (Virgo, France)
Jay Marx (LIGO, Director, USA)
David McClelland (AIGO, ANU, Australia)
Jesper Munch (Chair, ACIGA, Australia)
B.S. Sathyaprakash (GEO, Cardiff Univ, UK)
Bernard F. Schutz (GEO, Director AEI, Germany)
Jean-Yves Vinet (Virgo, France)
Stan Whitcomb (LIGO, Caltech, USA)
Courtesy: Unnikrishnan
National Steering Committee:
Kailash Rustagi (IIT, Mumbai) [Chair]
Bala Iyer (RRI) [Coordinator]
Sanjeev Dhurandhar (IUCAA) [Co-Coordinator]
D.D. Bhawalkar
P.D. Gupta (RRCAT)
J.V. Narlikar (IUCAA)
Ajit Kembhavi (IUCAA)
G. Srinivasan
LIGO-India: Why is it a good idea?
for India
• Have a 20 year legacy and wide recognition in the Intl. GW community.
(Would not make it to the GWIC report, otherwise!)
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AIGO/LIGO/EGO strong interest in fostering Indian community
– GWIC invitation to IndIGO join as member (Jul 2011)
• Jump start direct participation in GW observations/astronomy
– going beyond analysis methodology & theoretical prediction --- to full fledged
participation in experiment, data acquisition, analysis and astronomy results.
• For once, may be perfect time to a launch into a promising field (GW
astronomy) well before it has obviously blossomed.
• Provides an exciting challenge at an International forefront of
experimental science. Can tap and siphon back the extremely good
UG students trained in India. (Sole cause of `brain drain’).
– 1st yr summer intern 2010  MIT for PhD
– Indian experimental scientist  Postdoc at LIGO training for Adv. LIGO subsystem
• Indian experimental expertise related to GW observatories will thrive
and attain high levels due to LIGO-India.
– Sendhil Raja, RRCAT, Anil Prabhakar, EE, IIT Madras, Pradeep Kumar, EE, IITK
Photonics
– Vacuum expertise with RRCAT (Shukla) , IPR (Ajai Kumar)
LIGO-India: Why is it a good idea?
… for the World
• Strategic geographical relocation for GW astronomy
– sky coverage gain:
– distance:
– duty cycle:
• Potentially large science community in future
– Indian demographics: youth dominated – need challenges
– excellent UG education system already produces large number of trained
in India find frontline research opportunity at home.
• Large data analysis trained manpower and facilities exist (and
being created.
GWIC: Gravitational Wave International Committee
Courtesy: B. Schultz: GWIC Roadmap Document
Indo-Aus.Meeting, Delhi, Feb
2011
LIGO-India: the concept …
• LIGO Lab approached with concept proposal for
joint mega-project --- strategic geographical
relocation of
• Advanced LIGO interferometer detector funded and
ready to be shipped by US
• Indian contribution in infrastructure :
 site
 vacuum system
Related Controls
Data centre
 trained manpower for installation,
commissioning and running for 10 years
LIGO-India: … the Opportunity
• Part of a fundamental scientific discovery : direct
detection of gravitational radiation
• Part of “historic” launch of a new window of Astronomy
•LIGO-India: Southernmost, hence, Unique role in the
Intl. GW observatory network.
• Full detector at about half the cost is the naïve
calculation.
Adv. LIGO detector system is worth 15 years of challenging R &D – price tag?
• Indian Labs & Industry
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LIGO-India: … the opportunity
Strategic Geographical relocation
- the science gain
Sky coverage
: Synthesized
Network
beam
(antenna power)
LIGO-India: … the opportunity
Strategic Geographical relocation
- the science gain
Sky coverage: ‘reach’ /sensitivity in different directions
LIGO-India: … the opportunity
Strategic Geographical relocation
Source localization error
5-15 degrees to
~degree !!!
Ellipses version as in LIGO-Aus proposal ?
LIGO-India: … the opportunity
Strategic Geographical relocation
Polarization info
Sky coverage ?
LIGO-India: … the opportunity
Strategic Geographical relocation
Figure?
Network: HIJLV
Mean horizon distance:
Detection Volume:
Volume Filling factor:
Triple Detection Rate(80%):
Triple Detection Rate(95%):
Sky Coverage:
Directional Precision:
GMRT
1.57
12.0
73%
8.62
11.1
100%
2.93
Bangalore
1.63
12.0
66%
8.64
11.1
100%
3.00
LIGO-India: … the opportunity
LIGO-India : Technology gain
Relative valuation ?
• 180 W pre-stablized Nd:YAG laser
• Input condition optics, including electro-optic modulators, Faraday isolators, a
suspended mode-cleaner (12-m long mode-defining cavity), and suspended modematching telescope optics.
• five "BSC chamber" seismic isolation systems (two stage, six degree of freedom,
active isolation stages capable of ~200 kg payloads)
• six "HAM Chamber" seismic isolation systems (one stage, six degree of freedom,
active isolation stages capable of ~200 kg payloads)
• eleven Hydraulic External Pre-Isolation systems (mount external to chamber for
longer range and lower frequency isolation and actuation
• 10 interferometer core optics (test masses, folding mirrors, beam splitter, recycling
mirrors)
LIGO-India: … the opportunity
LIGO-India : Technology gain
Relative valuation ?
* Five quadruple stage large optics suspensions systems
* Triple stage suspensions for remaining suspended optics
* Baffles and beam dumps for controlling scattering and stray radiation
* Optical distortion monitors and thermal control/compensation system for large optics
* Photo-detectors, conditioning electronics, actuation electronics and conditioning
* Data conditioning and acquisition system, software for data acquisition
* Supervisory control and monitoring system, software for all control systems
* Installation tooling and fixturing
LIGO-India: … the challenges
Organizational
 National level mega-project
 Identify a lead institution and agency
 Project leader
Train manpower for installation & commissioning
 Generate & sustain manpower running for 10 years.
 Site
 short lead time
 International competetion
Technical
 vacuum system
 Related Controls
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 Data centre
LIGO-India: … the challenges
Trained Manpower for installation & commissioning
Requirements:
From LIGO requirements doc
Plans & Preliminary exploration:
Sendhil doc
Indo-US centre for Gravitational
Physics and Astronomy
APPROVED for funding (Dec 2010)
• Centre of Indo-US Science and Technology Forum (IUSSTF)
• Exchange program to fund mutual visits and
facilitate interaction.
• Nodal centres: IUCAA , India & Caltech, US.
• Institutions:
Indian: IUCAA, TIFR, IISER, DU, CMI - PI: Tarun Souradeep
US:
Caltech, WSU
- PI: Rana Adhikari
LIGO-India: … the challenges
Generate manpower for sustenance of the Intl. observatory
Requirements:
Plans & Preliminary exploration:
• Summer internships in Intl labs underway
• IndIGO schools
Proposals:
Post graduate school specialization course
LIGO-India: … the challenges
Large scale ultra-high Vacuum enclosure
Requirements:
Preliminary exploration:
Indian Site
LIGO-India: … the challenges
Requirements:
Low seismicity
Low human generated noise
Air connectivity,
Acad institution, labs, industry
Preliminary exploration:
IISc new campus & adjoining campuses near Chitra Durga
•1hr from Intl airport
• low seismicity
•National science facilities complex plans
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LIGO-India: … the challenges
Short lead time
Requirements:
Preliminary exploration:
LIGO-India: … the challenges
Internation competition
Issues:
Preliminary assessment:
The IndIGO data analysis centre
 Tier -2 centre with data archival and
computational facilities
•LIGO Sites at Hanford,
Livingston
•Data acquisition systems
 Inter-institutional proposal for facility
•LIGO Labs at Caltech
 Propose for a high-throughput
Computation and GW Data Archival
Centre.
•LIGO Lab at MIT, LSC institutions
like UWM, Syracuse etc
•IndIGO Data Analysis Centre
 Will provide fundamental infrastructure
for consolidating GW data analysis
expertise in India.
Courtesy: Anand Sengupta
Objectives of the data centre
Archival
Indian Researchers and
Students
TIER3 centres at
Univ & IISERS
LSC
LIGO Data Grid
Tier 2
Data Centre
at IUCAA
Community
development
Analysis
Other
science
groups
Web Services
Collaboration
tools
LIGO Data Grid as a role model for the proposed
IndIGO Data Analysis Centre.
Courtesy: Anand Sengupta
IndIGO Data Centre@IUCAA
Indian Initiative in Gravitational-wave Observations
 Primary Science: Online Coherent search for GW signal from binary
mergers using data from global detector network
 Role of IndIGO data centre
 Large Tier-2 data/compute centre for archival of g-wave data and analysis
 Bring together data-analysts within the Indian gravity wave community.
 Puts IndIGO on the global map for international collaboration with LIGO
Science Collab. wide facility. Part of LSC participation from IndIGO
 100 Tflops = 8500 cores x 3 GHz/core
Need 8500 cores to carry out a half decent coherent search for gravitational
waves from compact binaries.
(1 Tflop = 250 GHz = 85 cores x 3 GHz / core)
 Storage: 4x100TB per year per interferometer.
 Network: gigabit backbone, National Knowledge Network.
Courtesy: Anand Sengupta, IndIGO
Future GWDA Plans of IndIGO
(as part of LSC)
Project leads: Sanjit Mitra, T. Souradeep, S. Dhurandhar …
 Extend GW radiometer work (Mitra,Dhurandhar, TS,…2009)
Implementation of the cross-correlation search for
periodic sources (Dhurandhar + collab.)
 Burst Sources
• Formulation
• Implementation
Courtesy: S. Dhurandhar
Vetoes for non-Gaussian noise for
coherent detection of inspirals
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Project leads: Anand Sengupta, Archana Pai, M K Harris.
 Non-Gaussian noise plagues the detector data
 Vetoes have been developed in LSC for removal of non-Gaussian noise
in the single detector case
 For coincidence search the veto is obvious but for coherent not so.
 Developing a veto for coherent is crucial – chi squared
 Scope for improving the current chi squared test – Japanese
collaboration
Courtesy:
S. Dhurandhar
8th February
Delhi
Tests of General Relativity using GW
observations
Project leads: K G Arun, Rajesh Nayak and Chandra Kant Mishra,
Bala Iyer
 GWs are unique probes of strong field gravity. Their direct
detection would enable very precise tests of GR in the
dynamical and strong field regime.
 Preparing data analysis algorithms for AdvLIGO in order to
test GR and its alternatives is one of the important and
immediate goals of LSC.
 Plan to take part in the activity to develop parameter
estimation tools based on Bayesian methods.
 Possible collaboration with B S Sathyaprakash (Cardiff
University) & P Ajith (Caltech).
Courtesy: S. Dhurandhar
Summary (& next steps?)
THE END
IndIGO Data Centre@IUCAA
 Need for a IndIGO data centre
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Large Tier-2 data/compute centre for archival of g-wave data and analysis
Bring together data-analysts within the Indian gravity wave community.
Puts IndIGO in the global map for international collaboration
 LSC wide facility would be useful for LSC participation
 Functions of the IndIGO data centre
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Data archival: Tier-2 data centre for archival of LIGO data. This would include data
from LIGO-Australia. LIGO Data-Grid Tools for replication.
Provide Computation Power: Pitch for about 8000 cores
 Compare with AEI (~5000 cores), LIGO-Caltech (~1400 cores), Syracuse cluster
(~2500 cores).
 Main considerations for data centre design
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Network: gigabit backbone, National Knowledge Network. Indian grid!
Dedicated storage network: SAN, disk space
Electrical power, cooling, Air-Conditioning: requirements and design
Layout of rack, cabling
Hardware (blades, GPUs etc.), middleware (Condor, Globus), software (Data
Monitoring Tools, LALApps, Matlab)
Courtesy: Anand Sengupta
Summary: data centre requirements
100 Tflops = 8500 cores x 3 GHz/core
Need 8500 cores to carry out a half decent coherent search
for gravitational waves from compact binaries.
(1 Tflop = 250 GHz = 85 cores x 3 GHz / core)
Storage: 4x100TB per year per interferometer.
Cost ~ 25 crores (Comp. hardware alone)
 3/4 crores startup - to facilitate the close Intl. interactions
required with existing LSC data centres & labs . Large scale LD analysis
tools training required. Summer internships,
meetings/conference/schools,…
 As part of planned HPC data centre at IUCAA ?
Courtesy: Anand Sengupta
LIGO-Australia: Idea and Opportunity
• The NSF approved grand decision to locate one of
the planned LIGO-USA interferometer detector at
Gingin site, W. Australia to maximize science benefits
like baseline, pointing, duty cycle, technology
development and international collaboration.
• The proposal from Australian consortium envisages
IndIGO as one of the partners to realize this amazing
opportunity.
- Indian contribution in hardware (end station
vacuum system, and controls), Data centre,
manpower for installation and commissioning.
Indo-Aus.Meeting, Delhi, Feb
2011