UA9 telescope first ideas

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UA9 telescope first ideas Rome
12/3/2010 Mark Raymond m.raymond_at_imperial.ac.
uk
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CMS LHC Si strip readout system
CMS FED (9U VME)
APVMUX
APV
analog opto-hybrid
100m
lasers
inner barrel sensor
96
12
laser driver
x15,000
analog optical receivers
analogue readout
APV25 0.25 mm CMOS FE chip APV outputs analog
samples _at_ 20 Ms/s APVMUX multiplexes 2 APVs onto
1 line _at_ 40 MHz Laser Driver modulates laser
current to drive optical link _at_ 40 Ms/s /
fibre O/E conversion on FED and digitization
_at_ 9 bits (effective)
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APV25
128 channel chip for AC coupled sensors slow 50
nsec. CR-RC front end amplifier 192 cell deep
pipeline (allows up to 4 msec latency locations
to buffer data awaiting readout) peak/deconvoluti
on pipeline readout modes peak mode -gt 1 sample
-gt normal CR-RC pulse shape deconvolution -gt 3
consecutive samples combined to give single
bunch crossing resolution
Decon.
Peak
noise 270 38 e/pF (peak) 430 61 e/pF
(deconvolution)
note only discrete 25nsec samples of above
shapes are available in asynch. test beam choose
timing to get close to top of peak mode pulse
shape
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APV readout
trigger
FED
VME 10 MB/s
readout analog opto-link
Slink to CMS DAQ
APV provides a timeslice of information from all
128 input channels following external trigger
(trigger must be timed-in correctly)
no zero-suppression (sparsification) on detector
pedestal, CM subtraction and zero suppression on
FED raw data also available for setup,
performance monitoring and fault diagnosis can
read out raw data at low rate VME - lt 1
kHz can read out sparsified data faster VME
10 kHz (to be verified some uncertainty
here) Slink faster 100 kHz but needs
incorporation (and customized use) of other CMS
components (probably not possible this year)
20 Ms/s readout -gt 7 ms
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off-detector FED functionality
opto-electric conversion 10 bit 40 MHz
digitization pedestal and CM subtraction hit
finding (sparsification) formatting and
transmission of data up to higher DAQ
level check of APV synchronization all
tracker synchronous, so all pipeline
addresses of all APVs should be the same
FED checks received APV pipe address
matches with expected value (APV logic
emulated at trigger level)
9U VME
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UA9 telescope readout system
APVMUX
CMS FED (9U VME)
APV
analog opto-hybrid
100m
lasers
inner barrel sensor
96
12
laser driver
PA
make use of most components but different sensors
no PA readout fibre ribbons plug straight into
FED
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telescope sensor module
ceramic piece (same thickness as hybrid)
ceramic hybrid
D0 sensor 60 um pitch ( intermediate strip) 8
um resolution
AOH
Al support plate with cutout beneath sensor
peltier
heatsink
fan
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XY plane
sensor
AOH
crossover area 4 x 4 cm2
interface circuitry optical fibre adaptors power
supply conditioning peltier cooling control ..
power
slow control
fast control (40 MHz ck, trigger)
fibre ribbon readout
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XY plane box (light tight)
250 mm
250 mm
50 mm
baseplate (dimensions not critical)
adjustable feet for levelling
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XY plane
XY plane
XY plane
XY plane
few 10s m
m
m
LV/HV power supplies not included here
note will need trigger to initiate APV
readout (who will provide?)
I2C 1 bus per plane actively split inside plane
module also opto-isolated Ck/T1 1 shielded pair
per plane CK/T1 combination at VME end (separate
module) 1 fibre ribbon (50 utilised) per plane
VI2C
SeqSi
TTCex
TTCvi
crate controller
9U/6U VME
FED
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software
first thoughts - not my area of expertise will
need setup lots of programmable parameters in
CMS readout system bias levels, modes of
operation, timing offsets (synchronize to beam
trigger), run control well behaved
start/stop look after data storage,
format? prompt data analysis online (provide
feedback to setup) beam profile, signal amplitude
histos, . offline what is required?
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I2C link
5V
5V
5V
5V
2.5V
2.5V
10s m
buffer
opto- isolate
I2C de-mux
level shift
buffer
1st APV/opto hybrid
VI2C
level shift
2nd APV/opto hybrid
VME (1 channel)
ancilliary I2C circuits
separate VME buffer module (4 chan can also
incorporate Ck/T1 opto-buffering)
within front end XY plane enclosure
level shift
resets
Ck/T1 link
10s m
Ck
Ck/T1 combine
1st APV/opto hybrid
SeqSi
opto-buffer
opto-receiver
2nd APV/opto hybrid
T1
fibre-optic
1st APV/opto hybrid
opto-buffer
opto-receiver
2nd APV/opto hybrid
1st APV/opto hybrid
opto-buffer
opto-receiver
2nd APV/opto hybrid
1st APV/opto hybrid
opto-buffer
opto-receiver
2nd APV/opto hybrid
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Optical rail system
up to 2 m
50 mm
80 mm
X48 system from www.newport.com assume this will
sit on stable table (provided by someone
else) feet allow some adjustment for
levelling will still need some other mechanism
for overall height