semiconductor technology associates siliconus maximus sdw2005 scientific detector workshop june 19...

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 r.bredthauer@sta-inc.net

andMichael Lesser

UA Imaging Technology Laboratory325 S. Euclid Ave., Suite 117

Tucson AZ 85721-0330520-621-4236

lesser@itl.arizona.edu

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

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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