Transcript Design and Simulation Studies of Resistive Plate Chambers

Design and Simulation Studies of
Resistive Plate Chambers
(Ph.D Progress Seminar)
Satyanarayana Bheesette
Roll number: 04412701
Supervisors
Prof Raghava Varma, IIT Bombay
Prof Naba Mondal, TIFR, Mumbai
Department of Physics
Indian Institute of Technology Bombay
August 2008
Plan of the this presentation
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Long-term stability tests of RPCs
Development of honeycomb pickup panels
Development and study of electrode coatings
Calibration and precision studies of the gas system
Design and construction of prototype detector magnet
Design and construction of prototype detector stack
Electronics, trigger, DAQ and monitoring systems
Analysis of ICAL prototype detector stack data
Study of RPC cluster size
Summary and conclusions
Presentations and papers
Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
2
Next topic …
 Long term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
3
Long-term stability tests of RPCs
• Two small area RPCs made of
Japanese glass
• Operated in avalanche mode
• No sign of any aging after
continuous operation for 2.5
years
• Long-term tests stopped end of
last year
• Wealth of data collected;
conclusions made
• Tried another large area RPC
in streamer mode this year
• Chamber died after a few
weeks of operation
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
4
Next topic …
• Long-term stability tests of RPCs
 Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
5
Honeycomb pickup panel
Terminations on the non-readout end
Machined pickup strips on honeycomb panel
Preamp connections on the readout end
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Measurement of characteristic impedance
Recipe: Tune terminating impedance for each strip width until
the reflected signal for injected charge pulse disappear.
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Pulse profiles while measuring Z0
48 W
Open
100 W
51 W
100 W
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
8
Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
 Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
9
Electrode coating technique
Graphite paint prepared using colloidal grade graphite
powder(3.4gm), lacquer(25gm) and thinner(40ml) is sprayed
on the glass electrodes using an automobile spray gun. A
uniform, stable graphite coat of desired surface resistivity
(100-200KW/) can be obtained by this method.
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Specifications of the new spray paint
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Prototype of automatic painting machine
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Screen printing parameter optimisation
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Study on effect of thinner on the resistivity
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Technique of screen printing on glass
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
 Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
16
New gas system features
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16 pneumatically controlled outputs
Molecular sieve based input filter columns
Nippon Tylan made model FC-760 MFCs
Parker made fine filters on the mixed gas
On-line moister readout on mixed gas
Output flow control by SS 0.3mm capillaries
Bleeder bubblers for RPC protection
Facility to add controlled moister into the mixture
Computer interface for control and monitoring
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Front-view of the new gas system
August 23, 2008
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Ph.D Progress Seminar, IIT Bombay
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Precision calibration of the gas system
August 23, 2008
Argon
Iso-butane
R134a
SF6
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Ph.D Progress Seminar, IIT Bombay
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Cross-calibration of the gas system
• Calibration done using water displacement method
• Calibrated against the MFC monitor voltage
• Cross-calibration procedure
– Glass/hard plastic tube with precise inner diameter chosen.
Placed on a perfectly horizontal surface.
– Water droplet introduced through an opening on one end of the
tube
– Gas connected to this end
– Gas moves the water droplet forward α gas flow
– Distance, time intervals measured
– Gas volume computed and compared with displayed value
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
 Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
21
Magnet iron installation
T and C Sections of the magnet
August 23, 2008
B.Satyanarayana
Assembled magnet
Ph.D Progress Seminar, IIT Bombay
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B-H curve for prototype magnet
Steel sample size: 68cm  43.5 cm  4.8 cm
Number of turns in coil: 25
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
 Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
24
Schematic of the prototype detector stack
August 23, 2008
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Ph.D Progress Seminar, IIT Bombay
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Prototype detector stack and the DAQ
August 23, 2008
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Ph.D Progress Seminar, IIT Bombay
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Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
 Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
27
Schematic of prototype detector DAQ
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Ph.D Progress Seminar, IIT Bombay
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Preamp for prototype detector
• Built as a cascade of
BMC1595/BMC1597 and
BMC1513 HMCs,
developed at BARC,
Electronics Division
• Overall gain of about 80.
• Rise and fall times are about
3nS and 6nS
• Noise band within ±7mV
August 23, 2008
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Ph.D Progress Seminar, IIT Bombay
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Gain characteristics of preamplifier
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Ph.D Progress Seminar, IIT Bombay
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16-channel analog front-end
• Functions
– To digitize the preamp signals
– To form the pre-trigger (Level0) logic
– Signal shaping
• Features
– Based on the AD96687 ultrafast comparator
– Common adjustable threshold
going up to 500mV
– VTh now at -20mV
– ECL output for low I/O delay
and fast rise times
August 23, 2008
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Ph.D Progress Seminar, IIT Bombay
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32-channel digital front-end
• Functions
– Latch RPC strip status on trigger
– Transfer latched data serially through a
daisy chain to the readout module
– Time-multiplex strip signals for noise
rate monitoring
– Generate Level-1 trigger signals
• Features
– Latch, shift register, multiplexer are
implemented in CPLD XC95288
– Trigger logic is built into a CPLD
XC9536; flexible
– Data transfer rates of up to 10MHz
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Control and data router
• To route the control
signals and shift clock
from controller to the
individual FEP modules
• To route the latch data
from all the FEPs to the
readout module
• To route strip signals from
FEPs to the scalers for
noise rate monitoring
August 23, 2008
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Ph.D Progress Seminar, IIT Bombay
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Trigger and TDC router
• To route the m-Fold signals
from each RPC plane to the
final trigger module
• To route TDC stop signals
(1-Fold) from each plane to
the TDC module
• All signals are in LVDS
logic, except TDC stop
signals which are in ECL
logic for achieving better
timing resolution
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Data and monitor control module
• On FTO, triggers all the FEPs to
latch the strip signals
• Initiates serial data transfer to the
readout module
• Manages the noise rate monitoring
of strip signals, by generating
periodic interrupts and selecting
channels to be monitored
sequentially
• CAMAC interface for parameter
configuration (like data transfer
speed, size, monitoring period) as
well as diagnostic procedures
August 23, 2008
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Ph.D Progress Seminar, IIT Bombay
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Data and monitor readout Module
• Supports two serial
connections for event data
recording of X and Y planes
and 8 channels for noise rate
monitoring
• Serial Data converted into
16-bit parallel data and
stored temporarily in 4k
FIFO buffer
• Source of LAM for external
trigger source
• CAMAC interface for data
readout to Computer
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
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Final trigger module
• Receives m-fold layer triggers and
generates m  n fold final trigger
• Final trigger out (FTO) invokes LAM
and is Logic Trigger Out (LTO)
vetoed by gated LAM
• Inputs can be selectively masked
• The rates of different m  n
combinations counted by embedded
16-bit scalers
• Rate monitoring of LTO signal using
the built in 24-bit scaler
• Logic inputs and m  n signals are
latched on an FTO and can be read
via CAMAC commands
• Implementing using FPGA adds to
circuit simplicity and flexibility
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
37
Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
 Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
38
Typical cosmic ray muon event
August 23, 2008
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Ph.D Progress Seminar, IIT Bombay
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Efficiency time profile of an RPC
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RPC absolute time resolution plots
August 23, 2008
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RPC relative time resolution plots
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Ph.D Progress Seminar, IIT Bombay
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RPC-wise timing parameters
RPC Id
AB06
JB00
IB01
JB01
JB03
IB02
AB02
AB01
AB03
AB04
AB07
AB08
HV(KV)
09.8
09.6
09.8
09.6
09.8
09.8
09.8
09.8
09.8
09.8
09.8
09.8
August 23, 2008
Mean(nS)
49.53
46.00
42.31
42.55
43.75
38.49
42.77
35.30
45.82
41.66
40.61
41.56
Sigma(nS)
2.06
2.32
2.15
2.28
2.26
2.31
2.53
2.16
3.23
2.42
2.47
2.80
B.Satyanarayana
RelMean(nS)
RelSigma(nS)
-7.64
1.41
-4.47
1.67
-0.64
1.63
-0.87
1.58
-2.18
1.44
3.27
1.38
-1.21
1.51
6.33
1.71
-4.55
1.99
Reference RPC
0.96
1.35
0.31
1.82
Ph.D Progress Seminar, IIT Bombay
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RPC strip hit summary
RPC Id = AB08
No strips hit
Strips 15 +
Strips 16 +
Strips 15 +
Strips 15 +
Strips 15 x
Strips 16 x
Strips 15 x
Strips 15 x
Strips 15~ x
Strips 15 x
August 23, 2008
HV = 09.8KV
16
17
17
16
16
17
17
16
16~
16~
+ 17
x 17
x 17
x 17~
B.Satyanarayana
:
:
:
:
:
:
:
:
:
:
:
35
408
619
425
619
0
214
0
0
211
0
[ 5.4]
[62.4]
[94.6]
[65.0]
[94.6]
[ 0.0]
[32.7]
[ 0.0]
[ 0.0]
[32.3]
[ 0.0]
Ph.D Progress Seminar, IIT Bombay
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Strip hit map of an RPC in a run
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
45
RPC strip rate time profiles
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
46
Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
 Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
47
RPC strip cluster size analysis
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
RPC
Size
AB01
1.1
AB02
2.3
AB03
2.2
AB04
2.3
AB06
4.0
AB07
2.4
AB08
1.9
IB01
2.2
IB02
1.1
JB00
1.6
JB01
3.0
JB03
1.1
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Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
 Summary and conclusions
• Presentations and papers
• Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
49
Next topic …
•
•
•
•
•
•
•
•
•
•
•
•
Long-term stability tests of RPCs
Development of honeycomb pickup panels
Development and study of electrode coatings
Calibration and precision studies of the gas system
Design and construction of prototype detector magnet
Design and construction of prototype detector stack
Electronics, trigger, DAQ and monitoring systems
Analysis of ICAL prototype detector stack data
Study of RPC cluster size
Summary and conclusions
Presentations and papers
Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
50
Presentations and papers
1.
2.
3.
4.
5.
6.
7.
8.
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11.
12.
13.
14.
Development of glass Resistive Plate Chambers for INO experiment, Proceedings of RPC2007, Nuclear Instruments
and Methods A, In press
INO prototype detector and data acquisition system, Proceedings of RPC2007, Nuclear Instruments and Methods A,
In press
Development of conductive coated polyester film as RPC electrodes using screen printing, Proceedings of RPC2007,
Nuclear Instruments and Methods A, In press
On-line gas mixing and multi-channel distribution system, Proceedings of RPC2007, Nuclear Instruments and
Methods A, In press
RPC exhaust gas recovery by open loop method, Proceedings of RPC2007, Nuclear Instruments and Methods A, In
press
Development of glass Resistive Plate Chambers for INO, Proceedings of International Conference on High Energy
Physics, University of Philadelphia, July 29 - August 5, 2008
Development and characterisation of large area glass Resistive Plate Chambers for the ICAL detector at INO,
Proceedings of Nuclear Physics Symposium, Sambalpur University, December 11-15, 2007
Electronics and data acquisition system for prototype INO-ICAL detector, Proceedings of Nuclear Physics
Symposium, Sambalpur University, December 11-15, 2007
Development of Resistive Plate Chambers for INO ICAL detector, Invited talk at University of Roma Tor Vergata,
November 2, 2007
Electronics for the INO ICAL detector, Presentation at KEK, Japan, November 27, 2007
Commissioning of ICAL prototype detector electronics, Presentation at INO Collaboration meeting, BARC, April 1314, 2008
Electronics, trigger and data acquisition systems for the INO ICAL detector, Presentation at INO Collaboration
meeting, BARC, April 13-14, 2008
Possible schemes for INO-ICAL electronics, Presentation at INO Electronics Meeting, TIFR, September 21, 2007
The joy and challenge of doing experimental particle physics, CBS Colloquium, August 12, 2008
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
51
Next topic …
• Long-term stability tests of RPCs
• Development of honeycomb pickup panels
• Development and study of electrode coatings
• Calibration and precision studies of the gas system
• Design and construction of prototype detector magnet
• Design and construction of prototype detector stack
• Electronics, trigger, DAQ and monitoring systems
• Analysis of ICAL prototype detector stack data
• Study of RPC cluster size
• Summary and conclusions
• Presentations and papers
 Acknowledgements
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
52
Acknowledgements
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Prof Raghava Varma, IIT Bombay
Prof Naba Mondal, TIFR, Mumbai
Prof Basant Nandi, IIT Bombay
Prof S.Uma Sankar, IIT Bombay
INO detector development & electronics design
teams’ colleagues
August 23, 2008
B.Satyanarayana
Ph.D Progress Seminar, IIT Bombay
53