Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.eso.org/projects/www.eso.org.projects.ngc/General/16072008-jreyes.pdf Дата изменения: Mon Jul 21 00:18:52 2008 Дата индексирования: Sun Apr 10 23:42:16 2016 Кодировка: Поисковые слова: millennium

NGC preamp for CCDs
· · · · · · · · ·
High-impedance JFET input JFET Low-noise Low-noise performance: detector limited Single-end Single-end or differential input (MUSE) Differential output 16 software selectable gains per channel 8 software selectable bandwidths per channel Software input short for calibration 4 channels, expandable design Compact size: 10 x 12 x 4 cm

16 July 2008

Javier Reyes


NGC for Adaptive Optics

16 July 2008

Javier Reyes


NGC AO Scope of Application
· Scientific NGC
Designed to control as many different detectors as possible: e2v, MIT, H1RG, H2RG, HiVisi, Calico...

· NGC for AO
Focus on only one type of detector: LLL (Low Light Level) CCDs, i.e. e2v CCD220/CCD219

· Under the same name, NGC, two different front-end front-end
CCD220

electronics focused on two different applications but with some commonalities at user level.
OP 4

Gain Registers

OP 3 OP 2

Image Area

Image Area Store Area
240x120 24µm

Gain Registers

OP 8

Gain Registers

Store Area

OP 7

240x120 24µm

Gain Registers

OP 6

OP 1

OP 5

16 July 2008

Javier Reyes


The design challenges des ges
· Very fast read-out speed: up to 1500 fps speed: up to · Very low read-out noise. read-out
­ Effective read noise <1e- (goal <0.2e-) read noise

· Very stable high-voltage clocks high-voltage · Low power consumption power consumption · Reduce volume: 19 x 23.5 x 7.5 cm

16 July 2008

Javier Reyes


The system architecture
The same than in scientific NGC

The same than in scientific NGC

SPARTA, not an NGC component
SPARTA: Standard Platform for Adaptive Optics Real Time Applications

16 July 2008

Javier Reyes


The connection topology
NGC AO multi-head scenario multi-head

· At user level, homogeneous ·

interface to scientific and AO NGC tifi NGC WFS head control by NGC LLCU
­ Fiber link at 1310nm link at ­ 2.5 Gb/s line rate 2.5 Gb/s ­ Xilinx Aurora protocol Xilinx

· Image frames delivered to SPARTA frames delivered
­ Fiber link at 850nm Fiber ­ 2.5 Gb/s line rate 2.5 Gb/s ­ 1.4 Gb/s pixel rate 1.4 Gb/s

­ sFPDP protocol
16 July 2008 Javier Reyes


The NGC AO WFS head

Mechanical design by Ralf Conzelmann
16 July 2008 Javier Reyes


The interior of the WFS head

16 July 2008

Javier Reyes


The history of the development
Opticon OCAM camera

Christian Guillaume Jean-Luc Jean-Luc Gach Philippe Balard

First light with prototype camera li ht ith

· Development of front-end of front · ·

electronics to validate CCD220 Development of high-voltage high-voltage phase clock electronics I/F via CameraLink
Javier Reyes

Philippe Feautrier

16 July 2008


The current prototype hardware
ESO NGC control and comm. board and
Technology transfer from Opticon OCAM is key

OCAM development (Marseille/OHP)
Video acq. board Clock board

· · · · · ·

Xilinx Virtex-5 FPGA Virtex-5 8 channels read-out ports read-out 4 optical transceivers Digital sine wave generation Adjustable clock delay Over-illumination Over-illumination protection
16 July 2008 Javier Reyes


The AO WFS head in GRAAL and GALACSI
GRAAL (MUSE) · The NGC WFS is one common LRU is common LRU · About 20 systems to be produced 20 to (15 spares) (15 + spares) · First WFS iin last quarter of 2010 i GALACSI (HAWK-I) (HAWK-I)

16 July 2008

Javier Reyes


External I/F Sparta & VLTI
· Scientific NGC interface to VLTI
­ ­ ­ ­ ­ Xilinx Aurora data link level protocol Aurora data level 1310nm mono mode fiber 2.5Gb/s line rate speed 8b/10 encoding di PMC based
To SPARTA To NGC

· AO NGC
­ Same link as above to LLCU Same ­ SPARTA fiber interface SPARTA · Seriall FPDP protocol Seria · Low latency: 4..6us · 850nm multimode fiber · 3.125 Gb/s line rate speed Head-toHead· 8b/10b encoding
16 July 2008

head link

Javier Reyes

Spare link


Thanks
· ICD NGC AO: VLT-TRE-ICD-14850-4286 · NGC web page: http://www.eso.org/projects/ngc/ page: org/projects/ngc/ · SPARTA-NGC IF: VLT-SPE-ESO-16100-3729 SPARTA-NGC

16 July 2008

Javier Reyes