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Emulsion Readout - Present and Future-. Toshiyuki Nakano 2008.1.24 Emulsion Workshop, Nagoya, Japan. 10 m m. 100 mm. 125 mm. Nuclear Emulsion Film. ・ Very high spatial resolution. ・ Possible to record MIP’s tracks. “OPERA film” is uniform, refreshable and mass producible. - PowerPoint PPT Presentation
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Emulsion Readout-Present and Future-
Toshiyuki Nakano2008.1.24
Emulsion Workshop, Nagoya, Japan
Nuclear Emulsion Film・ Very high spatial resolution. ・ Possible to record MIP’s tracks
“OPERA film” is uniform, refreshable and mass producible. ~100,000m2 are used in OPERA
Protection coat : 1m
Emulsion : 44m
Film base : 205m( TAC )
Emulsion:44m
乾板断面図(電顕写真)
Cross section
125mm
100mm
10m
Digitizing Nuclear Emulsion Films
Film base 200-800 m
MicroscopeZ -axis
Objective lens : 50x ~3m DOF (effective)
Resolution : 512x512 pixelsFOV : 160x160m2
Eff. Pixel size : ~0.3m
Emulsion ( backside)Typ. 45-100 m
Nucle
ar e
mul
sion
film
Imagesensor
Imagesensor
Emulsion (topside)typ. 45-100 m
160mGrain Density ~15 (/45m), FOG>3000 grain(/view)
4×1012pixel information in 1 film (in 100×100cm2, double side coat)
• Take 16 tomographic images by microscope optics.• Shift images to aim at specific angle tracks• Sum up 16 images to examine coincidence.• Find signal of tracks.
Repeats in angle space
Invented by K.Niwa in 1974
Early Track Selector
in 1985
Established by S.Aoki
Ref . The Fully Automated Emulsion Analysis System. S. Aoki et al.Published in Nucl.Instrum.Meth.B51:466-472,1990.
TS 0.0025 cm2/h
NTS~0.08 cm2/h
UTS 1 cm2/h
0.003
0.082
1
72
0.001
0.01
0.1
1
10
100
TS(TTL) NTS(CPLD) UTS(FPGA) SUTS(FPGA)
Evolution of the Scanning Power
Our code name (device technology)CHORUS DONUT OPERA
Speed in cm2/h
The 1st SUTS (20cm2/h)
Follow Shot Optics
No step and repeat image taking
• Use Ultra High Speed Camera– Up to 3k frames per second. Max Max
90views/sec 90views/sec ~~ 60cm60cm22/h (@50x)/h (@50x)
• Image taking by follow shot– No step and repeat operationNo step and repeat operation can avoid
a mechanical bottleneck.– FOV displacement and Blur are
canceled by moving objective lens
• Optimizing Field of View– 120m×90m -> 140m×140m or
more
Overcome the Bottle necks of the image acquisition
Optics Driven by PiezoD~16.4mm, W~13g
Sub-pixel Accuracy
High resonant frequency (fres>2kHz)
Real-time Image Filtering and Packing ProcessorArrange readout segments
to linesFIR filtersRing frame
buffersSpatial filter and
Pixel Packing
LVDS Camera Interface
LVDS Output Interface
Camera In
Processing speed :
>80cm2/h/board
SUTS Track recognition board
Internal Band width ~40Gbyte/s/FPGA
×11
LVDS ( 3+1 ) 2
240Mbyte/sec(2.5 msec/view)
32bit Bi-directional FIFO
Host interface
SLAVE FPGAs Calculating Overlayed
Image0.125msec/view/angle/FPGA
Power PC 405 2Control and Clustering
S-UTS Track Recognition Block diagram (revised)
Block SRAMHigh band width and
Fine Granularity21.6GByte/sec or more
PPC
PPC
SRAM
PPC
PPC
SRAM
PPC
SRAM
PPC
PPC
SRAM
PPC
PPC
SRAM
Rocket IO 204Gbyte/sec
From CameraImage-Pre-Processor
Local Control BUS
PPC
PPC
SRAM
PPC
SRAM
MASTER FPGAReordering Packed Image
Controlling Slaves
S-UTS data flow
Raw data
Data Base
150~300MB/s
2~10MB/s
High Speed Camera 3,000 frame/s
Front end image processorZero suppression, pixel packing
Track recognition
Alignment and Connect tracks
2~10MB/s~0.1MB/s
Physics Analysis
1.3GB/s
Temporary storage
PCPC
10cm
12.5cm
Outputs of S-UTS ~ 140 Million tracks
Pos. reprod. : ( 15 mrad )Ang. reprod. : ( 0.6 micron )
Vector Information : POS,ANG,DARK
Efficiency @50views/sec, ×35 objective lens
SUTS-372cm2/h
Micro track angle resolution
Reproducibility of Base Track Angle
3.7mrad/2 2.1mrad/2
Reproduciblity of Base Angle Measurements
0
5
0 0.1 0.2 0.3 0.4 0.5Slope rad( )
σmr
ad(
)
35magX35magY50magX50magY
Limited by processing power
Simulated by scanning twice and combining
Recoverable Efficiency @50views/sec, ×28 objective lens
SUTS-3121cm2/h
Under tuning
35×
28×
Micro track angle resolution
SUTS-3
Prospects for improvements of SUTS• Enlarging FOV
- 28x is under tuning. 121cm2/h will be possible.• Shorten repetition time
- 50views/s w 35x, 60view/s w 50x. Imager accept up to 90views/s.
• Bidirectional scanning to increase effective speed.
- 8 sec/line to scan, 3 sec to return back to the next line. 55cm2/h : 72cm2/h ~76%
A factor of 2-3 improvement is expected
2040
72
121
217
0
50
100
150
200
250
30v/ s,50x 60v/ s,50x 50v/ s,35x 50v/ s,28x 90v/ s,28x
Evolution of the SUTSSpeed in cm2/h
VERSION of SUTS
In practical use
In tuning phase
Concept to the next evolution of emulsion scanning.
The EX-F1 will be available from March 2008 priced at $999.99.
Pricing varies depending upon specifications and options ordered, but ranges between $3.5M and $4M
+
1 film/min
IC-Stepper (Lithographic system)
Resolution 350nm or betterNA 0.63Exposure light source i-line (365nm)Reduction ratio 1:5Exposure field 22mm square to 17.9 (H) 25.2 (V)mmAlignment accuracy 40nm or better
It is possible, by stepping only 56 times, to cover entire sheet with enough resolution.
Giga Pixel Imaging SystemRequirements• Total number of pixels should be ten to the ninth power
– To cover 20mm20mm in 0.5m pitch, it needs 40k40k pixels.
• The frame rate should be 12fps in average.– Pixel rate becomes ~20Gpixels/sec
It is possible by employing a mosaic imager
Giga Pixel Imaging System (2)IMX017CQE (SONY) is a good candidate of this purpose
• Pixel size 2.5m• Resolution 2880×2160• Frame rate 60fps• Pixel rate 373Mpixel/s
is priced at $999.99
Speed and Coverage of Mosaic Imager
20mm
Effective FOV 21.55×20.9 mm2×0.28 (1450×1100m2×80)Effective pixel size 0.5mRepetition time 1.5 sec /16depth/fullarea (4 steps/view)Max. scan speed 12000cm2/h (150cm2/h×80)
Possibility of track recognition part
• An SUTS processor can perform ~100cm2/h Its is possible, with ~120 boards, to process emulsion images taken by this optics.
• According to Moore’s law, we can expected much better computing technology, which is lower cost, smaller profile and low power consumption.
SUTS processor is based on 0.13um process. Since 0.065um process is popular now, ¼ foot print and 2 times faster speed a unit will be possible.
It’s NOT a problem.
Summary
• A scanning speed of ~72cm2/h has been achieved in practical use. 121cm2/h version is under tuning phase.
• It is possible, with the popular technologies, to achieve a scanning speed up to 1 film per minute.