semiconductor technology associates siliconus maximus sdw2005 scientific detector workshop june 19...
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Semiconductor Technology Associates
Siliconus Maximus
SDW2005 Scientific Detector Workshop
June 19 – 25, 2005Taormina, Italy
Richard A BredthauerSemiconductor Technology Associates, Inc.
27122 Paseo Espada, Suite 1004San Juan Capistrano, CA 92675
949-4811595 [email protected]
andMichael Lesser
UA Imaging Technology Laboratory325 S. Euclid Ave., Suite 117
Tucson AZ 85721-0330520-621-4236
Semiconductor Technology Associates
CCD Growth
• Relentless growth to larger and larger devices with more and more pixels.
• Applications to Digital still photography and astronomy
CMOS IMAGER
Semiconductor Technology Associates
Guider Minimus
• STA1220A
• 2560x256 15 micron dual output
• ~ 3 electrons noise
• Guider for Carnegie and CFHT
Semiconductor Technology Associates
KEPLER
• Space based planet finder
– Prototype development
– E2V did production
• 4-phase, 3-edge buttable CCD imager
• 2200 (Serial) X 1024 (Parallel) 27-micron square pixels,
• Split serial readout register at the bottom.
Semiconductor Technology Associates
FAME
• Space based imager
• 3-phase, 3-edge buttable CCD imager
• 2048 (Serial) X 4096 (Parallel) 15-micron square pixels,
• Split serial injection register at the top
• Split serial readout register at the bottom.
Semiconductor Technology Associates
Orthogonal Transfer Array
• Enables charge transfer in arbitrary directions
• Capable of performing tip-tilt directly within the CCD
• Collaborative program to PanSTARRS with CFHT and Lincoln Labs
• Source of OTAs for WIYN ODI program
Semiconductor Technology Associates
Orthogonal Transfer Array
• 3840x3952 Array of 8 x 8 cells of 480x494 pixels
• 12 micron pixels
• Control lines for each cell
• Single readout for each column of 8 cells
• Second iteration this summer
Semiconductor Technology Associates
STA0500A
• Custom lot run for UA astronomy
• 4kx4k 15 m pixels
• Two device per wafer
• Low noise amps
• Several other custom devices on wafers
• Two lots completed
Semiconductor Technology Associates
STA0500A Measured Backside Performance
• 2.8 electrons noise @ 50 kHz
• HCTE and VCTE > 0.999998
• Full well >80,000 electrons MPP mode
• 4 amplifiers
– 1,2, & 4 channel full frame readout
• Dark current 10 e/pix/hour @ -100C
Semiconductor Technology Associates
UA Foundry Wafer
•2 4kx4k CCDs
• 4 2688x512 CCDs
• 4 1200x800 CCDs
• 512x1024 FT guiders
• 128x128 AO devices
Semiconductor Technology Associates
STA0500A CTE
SN3556 HCTE
SN3557 VCTE
CTE > 0.999998
Semiconductor Technology Associates
Typical STA0500 Yield
• 44% unshorted from 24 wafers
• Grading:
– A/B – 15 (astronomy grade)
– C – 3 (engineering or special applications)
– D/F – 5 (typically unusable)
• Standard package is 3.0” Kovar tub
• Available both frontside and backside
Semiconductor Technology Associates
QE @ -115 C – Blue Optimized
SN3668
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
300 400 500 600 700 800 900 1000 1100
Wavelength (nm)
Mea
sure
d Q
E
University of ArizonaRoy A. Tucker Temp = -115C
Semiconductor Technology Associates
QE @ -100 C – Broad Band
SN3671
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
300 400 500 600 700 800 900 1000 1100
Wavelength (nm)
Mea
sure
d Q
E
University of ArizonaRoy A. Tucker
Temp = -100C
Semiconductor Technology Associates
Magellan Imagery
• Received from ITL and imaging in Chile in a record 2 weeks
• LDSS III Spectrograph
Semiconductor Technology Associates
Other Large Area Arrays
• 4kx8k Frame Store
• 8 micron pixels
• 16 outputs
• 2k x 2k
• 27 micron pixels
• 4 outputs
Semiconductor Technology Associates
Maximus• Full 6” wafer imager
• 10k x 10k pixels
• Greater than 100,000,000 pixels per frame
• Multiple low noise outputs– 10 second full frame readout
• Backside thinned for max QE
• Brontosaurus of CCD imagers
Semiconductor Technology Associates
Hypothetical cost analysis6.4 gigapixel science grade array
• 80,000 x 80,000 pixels• 400 4kx4k 15 micron CCD imagers
– $50,000 each – Total cost of $20,000,0000
• 64 10kx10k 9 micron CCD imagers– $250,000 each– Total cost of $16,000,0000
• 100 8kx8k 15 micron CCD imagers– $220,000 each– Total cost of $22,000,0000
Semiconductor Technology Associates
Space Based Universe
• Corollary to Ground Based universe
• Can stir the public imagination
• CASSINI Mission
– Last multibillion dollar NASAspace mission > $3 Billion US
• Spectacularly successful accomplishment
Semiconductor Technology Associates
CCD Results
• Outstanding imagery of the surface of Titan
• Equivalent 1 cm resolution from 1 billion km will require a 10,000 km telescope mirror
• 8x the diameter of Earth
Semiconductor Technology Associates
Space Science
• DISR CCD was also used for the 1996 Mars Pathfinder Mission
• Comprehensive data for years of scientific analysis and a greater understanding of our solar system and universe.
Semiconductor Technology Associates
FINE