silicon lab bonn physikalisches institut universität bonn
Post on 01-Jan-2016
30 Views
Preview:
DESCRIPTION
TRANSCRIPT
H. Krüger, EUDET Brainstorming, 3/4.11.2005 1 SI LABSilizium Labor Bonn
Silicon Lab Bonn
Physikalisches InstitutUniversität Bonn
• DEPFET Test System
• Test Beam @ DESY
H. Krüger, EUDET Brainstorming, 3/4.11.2005 2 SI LABSilizium Labor Bonn
DEPFET Prototype System
• DEPFET sensors– 64 x 128 pixels, 36,5 x 28 µm2
– (Q1 2007: 512 x 512 pixels, 33 x 24 µm2)
• Event rate– old system: 10 Hz (various limitations)– new system: ~1 kHz (w/o zero supp.),
data transfer limited (20 Mbyte/s, USB 2.0)– with zero suppression: ~100 kHz (theor.),
row clock rate limited (10 MHz)
• DAQ– USB 2.0 interface to Win2k/XP PC– independent processes for slow control,
file writing and online-monitoring– inter-process communication via
‘shared memory’ buffers
H. Krüger, EUDET Brainstorming, 3/4.11.2005 3 SI LABSilizium Labor Bonn
Read-out System Hardware
Hybrid
DEPFETMatrix
128 x 64
FPGA
CURO II
SW SW
ADCADC
SRAM
TIATIA
Ctrl
Analog Signal
Hit Add
Ctrl
S3A Board
USB Board
USB µC
EPROM
PowerSupplies
USB 2.0
PC Win 2000/XP
DAQ SW (C++)
USB DLL
USB driver
Trigger Logic
Tri
gg
er /
Bu
sy
DEPFET DUT
S3A Board• Mixed signal board• Dual 65 MHz ADCs • FPGA + 256k SRAM• USB 2.0 interface card
Hybrid • DEPFET matrix• 2 Switcher + Curo• 2 transimpedance
amplifiers
H. Krüger, EUDET Brainstorming, 3/4.11.2005 4 SI LABSilizium Labor Bonn
BAT Bonn ATLAS Telescope
• four planes of double sided strip detectors
– 640 x 640 ch.– 50µ pitch
• analog r/o– VA1 / VA2 chips– S/N ~40-70
• spatial resolution: 4-5 µm• on-module zero suppression• event rate: max. 8 kHz• PCI interface card• DAQ SW for Win2k/XP
H. Krüger, EUDET Brainstorming, 3/4.11.2005 5 SI LABSilizium Labor Bonn
Test Beam Setup with BAT and DEPFET
trigger
TLUTLU
Trigger to modules
BAT modules
Blue Board Bus (BBB)
Win XP
PCI interface
USB interface
Busy from modules
BAT modulesDEPFETTrigger Logic Unit
H. Krüger, EUDET Brainstorming, 3/4.11.2005 6 SI LABSilizium Labor Bonn
Test Beam DAQ Structure
• See talk by Peter Fischer
H. Krüger, EUDET Brainstorming, 3/4.11.2005 7 SI LABSilizium Labor Bonn
Results from DEPFET TB @ DESY August 2005
• noise ~230 e• S/N ~140
(450 µm thick detector)
• purity 96.3%• efficiency 99.3%
5σ seed cut
H. Krüger, EUDET Brainstorming, 3/4.11.2005 8 SI LABSilizium Labor Bonn
Results from DEPFET TB @ DESY August 2005
Limitations:• low frame rate ~10Hz
limited by (old) test setup and
low electron flux @ 6 GeV
• spatial residuals ~10 µm(expected 2-4 µm @ S/N 144)
dominated by multiple scattering @ 6 Gev e-
beam
H. Krüger, EUDET Brainstorming, 3/4.11.2005 9 SI LABSilizium Labor Bonn
Wish List
• Beam– highest possible energy (> 6 GeV)– moderate to high flux (adjustable)– variable bunch structures ?
• Telescope– resolution < 2 µm, area min. 1 x 2 cm2
– low (almost no) material– minimum (adjustable) distance between telescope modules – high event rate (~ O(kHz))
• Mechanics & Cooling– positioning system for DUT (x, y, theta), < 1 µm x-y resolution– cooling: yes, but common schema feasible?
• Trigger– different scintillator sizes to adapt to DUT active area– configurable trigger interface to connect to DUT (Trigger,
Busy, BOR)– event by event r/o or buffered r/o
H. Krüger, EUDET Brainstorming, 3/4.11.2005 10 SI LABSilizium Labor Bonn
Wish List cont.
• Telescope DAQ and integration issues…
H. Krüger, EUDET Brainstorming, 3/4.11.2005 11 SI LABSilizium Labor Bonn
Integration of Telescope and DUT on HW Level
file
• sensors and FE electronic
• first level interconnect
• digitalization & sparsification with common DAQ HW (adopted for DUT)
• COTS interface (Gbit-Ethernet, USB, S-LINK, cPCI, VME…)
• common DAQ control, slow control, file writer (PC, SBC…)
telescope
DUT
DAQ HW
proprietary bus
DAQ ctrl
standard bus interface
computer
interface
Trigger
H. Krüger, EUDET Brainstorming, 3/4.11.2005 12 SI LABSilizium Labor Bonn
Integration of Telescope and DUT on SW Level
file
• sensors and FE electronic
• first level interconnect
• digitalization & sparsification with dedicated DAQ HW
• COTS interface (Gbit-Ethernet, USB, S-LINK, cPCI, VME…) can be different
• still common DAQ control, slow control and file writer but different interfaces
telescope
DUT
DAQ HW
DAQ ctrl
standard bus interfaces
computer
intfc intfc
Trigger
H. Krüger, EUDET Brainstorming, 3/4.11.2005 13 SI LABSilizium Labor Bonn
Integration of Telescope and DUT on Data Level
file
• sensors and FE electronic
• first level interconnect
• digitalization & sparsification with dedicated DAQ HW
• COTS interface (Gbit-Ethernet, USB, S-LINK, cPCI, VME…) can be different
• independent DAQ control, common file writer, running on one or two machines with inter-process communication (shared memory buffers, TCP/IP)
telescope
DUT
DAQ HW
tel. ctrl
standard bus interfaces
computer
intfc
Trigger
DUT ctrl
intfc
IPC
H. Krüger, EUDET Brainstorming, 3/4.11.2005 14 SI LABSilizium Labor Bonn
Discussion
• common omni purpose DAQ (standardized, well documented and maintained, cheap…) would be the ultimate goal
• but: most of the users already have their DAQ (or at least lab test-setups)
• they should not be forced to re-design their setup if they want to use TB@DESY
• integration on SW level is difficult or impossible due to different operating systems
• integration on ‘data-level’ seems to me most flexible, users can stick to their known DAQ
• needs definition and implementation of IPC (via TCP/IP or shared memory buffers), control protocol and common data format
+ four LEMO cables for trigger, busy, reset and “something else”
top related