Transcript Status of detector R&D

Electronics, trigger and data
acquisition systems for the
INO ICAL detector
B.Satyanarayana
Tata Institute of Fundamental Research
For INO collaboration
ICAL detector concept
50 Kton magnetised ICAL
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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We are here …
RPC’s pulse characteristics and ICAL’s requirements
understood to a large extent; more will be known from the
prototype detector
Time to formulate competitive schemes for electronics, data
acquisition, trigger, control, monitor, on-line software,
databases and other systems
Feasibility R&D studies on front-ends, timing elements, trigger
architectures, on-line data handling schemes should be
concurrently taken up
Segmentation, power budgets, integration issues etc. must be
addressed
Trade-offs between using available solutions and customised
design and developments for ICAL to be debated
Design tools, infrastructure, fab facilities
Needs national and international collaboration and team work
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Sub-systems
Front-ends
Latch and timing
Pipelines and Fiber
DAQ system, backend
Trigger system
Central clock
Slow control and monitoring
Computer, networking data storage
Voice, video communications
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Fast preamp ASIC
Rise Time: ~1ns
Power consumption: ~100mW
Power supply: 3.3V
Technology: 0.35
Dynamic range: 50-350fF
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Comparator ASIC
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Example for front-ends: NINO
Francis Anghinolfi et al
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Other examples for front-ends
Front-end for ATLAS Muon RPC system
Front-end for CMS Muon Barrel RPC system
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Placement of front-end electronics
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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J. Christiansen, CERN
HPTDC architecture
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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HPTDC specifications
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Yasuo Arai (KEK)
AMT chip for ATLAS Muon RPC
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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AMT chip performance
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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ALICE TOF timing system
Good example of a
large scale integration
of timing system using
industrial support
(CAEN)
VME64X backplane
2400 high resolution
(25pS) channels per
crate
Crate equipped with
other control, trigger,
communication and LV
supply modules
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Cables & services routing
RPC
Signal cables from RPCs
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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DAQ & services’ sub-stations
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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A scheme
Keep latching strip patterns on central clock
Relative timing between previous central clock
and trigger digitised
Latch data ignored if the no trigger is received
Strip logic signals sent out to the trigger
system in parallel
Programmable trigger system
Data pipelines to accommodate trigger latency
VME backends work as data collectors
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Low and high voltage systems
Proven commercial systems with standard
interfaces, control and monitoring do exist
Motivation for building customised solutions is
the availability of excellent building blocks
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For example DC-DC chips for HV systems
Good expertise in this area exists in the
collaboration
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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A promising DC-HVDC chip
Can this be good cheaper alternative to commercial solution?
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Other considerations
UPS and captive power backup
Thermal management, especially the on
detector electronics
Communication medium between ICAL and
Masinagudi, and to the rest of the world,
constraints
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Experts committee
Formed after the national level INO Electronics
meeting held in TIFR in September 2007
Current members
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B.P.Ajith Kumar, IUAC
V.B.Chandratre, BARC (Co-convener)
B.Satyanarayana, TIFR (Co-convener)
Swapan Sen, SIN
Member from KEK, Electronics group (TBA)
Charge of the committee
To suggest us the best possible data acquisition system for
the INO-ICAL detector using Resistive plate chambers
(RPCs) and magnetised iron.
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Design team members
INO collaborating institutes must pledge
design team members on full or serious basis
Need to train some of the younger members
with expert institutions/members
Distributed tools and software so that
engineers can work on defined segments of
jobs at their home institutions
Particularly useful to begin with, when new
engineers will be working on well defined
primitives
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Industries’ role
What should be INO’s modus operandi for
involving industries?
Jobs like chip fabrication of course will be
handled by industries (govt. or pvt.)
Can we out source some design jobs as well?
Industries are very eager and quite willing to!
Interacted with CAEN, NI, Datapatterns …
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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Presentations to follow
V.B.Chandratre
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ASIC/VLSI development capabilities, tools,
infrastructure, fab facilities
P.Nagaraj
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VME based data acquisition
B.Satyanarayana, TIFR, Mumbai
INO collaboration meeting, BARC, April 13-14, 2008
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