1. SRS Readout electronics
Hans Muller, CERN PH
16/04/2012

2. SRS idea provide a common readout backend with standard DAQ SW
- choose the frontend ( ASIC, hybrid) that fits your detector
provide a common readout backend with standard DAQ SW
start from minimal systems - > scale to large systems if needed
16/04/2012

3. SRS chip-link: HDMI cheap, v
SRS chip-link: HDMI cheap, v. high quality , 3Gbit/s, power, works very well
ADC
FEC
16 hybrids/FEC
2048 channels
Extension up to 30 m
16/04/2012

4. SRS hybrids on Detector
16/04/2012

5. SRS Minicrate a portable solution for up to 4k channels`
1 x FEC -ADC card Combo `
16/04/2012
ATX –SRS power adapters
+12,+5,+4V2,+3V3,+1V8,-5,-12

6. Eurocrate a scalable solution for up 16 k channels/crate
HP version up 4 FECs, 1 ATX, incl. power for 64 hybrids
FP version up 8 FECs, 2 ATX, incl. power for 128 hybrids
ATX power adapter
CTF Trigger and Clock
Fanout in SRS slot 9
8 x ADC card
from backside
8 x FEC card
from frontside
16/04/2012

7. 3U-extension cards for SRS
Projects for 3U SRS cards:
- Programmable HV for MPGDs, CERN
- UV pulse generator for MPGDs, CERN Lanzhou
- Trigger pickup shaper/threshold card
- Timepix adapter, Univ. Bonn
requires 3U subrack in Eurocrate
16/04/2012

8. SRS Rack environment DTC links (CAT6) Connect 40 FECs to 1 SRU
Max 92 k channels / Rack
16/04/2012

9. Scalable Readout Unit (SRU)
DTC links
For readout of 40 FECs
40 x DTC links
4 x LVDS trigger
TTCrx optical
4 x NIM in
4 x NIM out
4 x SFP+
2 GB DDR
Virtex 6
2011 DTC link development with SRU
for ALICE EMCaL
16/04/2012

10. CTF module for Clock and trigger
-CLOCK: distributes clock to all FEC cards, 40 MHz or external LVDS clock
-TRIGGER: distributes trigger to all FEC cards, external NIM, auto-10Hz, manual
16/04/2012

11. Online, Control and Monitoring via GBE link
Minicrate 1 FEC -> direct to Laptop
1 Gbit UDP over Ethernet
9 kB Jumbo packets
Eurocrate with several FECs
-> Network switch -> Laptop
Network plug
-Detector Monitoring
-Data Analysis
-Slow Controls
16/04/2012

12. Online software for SRS
SRS-Labview
DATE , MMDAQ , RCDAQ ( Linux based )
Root Analysis: Event statistics, distributions, cuts and fits
Online Monitoring: pulse-shape, x-y plots, pedestals, noise
16/04/2012

13. SRS User Status 4/2012* CERN experiments HEP experiments
ATLAS CSC upgrade MMegas ( 8kch APV-SRS systems, 1st SRS testbeams, MMDAQ developer )
ATLAS CSC upgrade MMegas, (VMM1 readout chip developer, SRS Adapter by Arizona Univ, MMDAQ )
ALICE EMCaL + FOCAL, SRU-based backend ( 50 kHz upgrade via SRS, DATE, new: Focal readout via SRS-Beetle ?)
ALICE TPC upgrade, SRS readout electronics with DATE backend ?
NA62 ref. tracker with Micro-Megas (1kCH-SRS Minicrate, MMDAQ )
CMS high Eta GEM collaboration ( VFAT hybrid and VFAT SRS adapter, in prep. )
Totem upgrade R&D , SRS VFAT readout, DATE ?
HEP experiments
NEXT Coll., dual Beta decay, SiPM, PM ( Collaboration on SRS HW & FW, FEC cards, DATE )
BNL GEM detector readout ( 2kCH. APV Minicrate, PHENIX SRDAQ porting to SRS )
Jeff. Lab Virginia Univ. GEM prototyping, ( Minicrate , Offline Data evaluation via AMORE + DATE)
SRS Minicrate up 4k ch.
Applications with Cosmic Tomography
FIT Florida, Muon Tompography for homeland security, GEMs ( 1st 16K SRS application, DATE )
Geoscienes CRNS- Waterquality in Rocks, MMegas ( 5kCh SRS Crate , DATE , Labview)
R&D with MPGD’s ( small systems )
Bonn/Mainz Univ, Timepix readout ( SRS- Timepix adapter card )
Helsinki HIP, GEM-MMega ( SRS evaluation, Trigger pickup box via CSP )
MEXICO UNAM, THGEM 2x ( SRS Minicrate, DATE )
C.E. Saclay, Micromegas ( 2k Ch SRS Minicrate , MMDAQ)
WIS Israel, THGEM 3x ( Minicrate, Beetle hybrid, SRS- Labview Beta tester
INFN Naples (Minicrate, Labview for SRS developer, CTF card , Zero-supression code
SRS crate 16k ch.
Teams waiting for commercial SRS delivery (orders via CERN store )
RD51 lab, Radcore, WIS, USTC, SAHA, INFN Bari, INFN Napoles, Stony Brook, Freiburg Univ
Yale Univ, J-Parc-RIKEN, East Carol. Univ., Jeff-Lab, Tsinghua Univ, Univ Texas,
* in red: SRS developers in green: to be confirmed in blue: USER

14. SRS cost (MPGD Detectors) Sales via CERN store, Commercial production
Small systems
1 Minicrate 2 hybrids (256 channels) start from 4.5 kEu
Large systems
Example: 82k channel SRS system ( 1 Rack, 5 crates, 1 SRU )
640 hybrids ~ 65 k hybrids %
5 Crates full power ~ 6 k electronics + cables %
SRU in Alu box ~ 3 k
FEC + ADC cards ~ 83 k
320 cables (HDMI+Flat) ~ 6 k Total 163 kEu
Channel cost (82 k) ~ 1.98 Eu/ch
16/04/2012

15. Project*: re-map SRS in ATCA
1.) higher channel integration => reduce cost/channel for large systems
2.) certified crate standard ) replace DTC cables by backplane
HDMI connectors
RTM option:
Clock and trigger
interface like CTF +
direct ethernet to DAQ
Equivalent of SRS ADC card
* with eicSys and ELMA Germany
16/04/2012

16. ATCA implementation draft ATCA blade = FEC equivalent
SRS FEC card:
Virtex 5, DDR2
1 Gbit SFP
16/04/2012

17. SADC adapter mezzanine =equivalent of ADC adapter
SRS ADC card
8 HDMI ports
16 x ADC MHz
16/04/2012

18. ATCA Blade with SADC adapter = equivalent of SRS combo (FEC+ADC)
24 HDMI ports
= 48 hybrids 128 ch.
= 6144 channnels
SRS FEC + ADC
max 8 HDMI ports
per Combo
16/04/2012

19. SRS-ATCA blades stack
SLOT 1
Connected via fabric link
to slot 2..14
11 Slots @ channels ~ 67 k channels in one ATCA Crate
16/04/2012

20. ATCA equivalent SRS Eurocrate
SRS Crate
67 k channel/crate
16/04/2012

21. ATCS equivalent for SRS Minicrate
16/04/2012

22. Conclusions
SRS : a (first?) complete & open solution for the readout of MPGD detectors
Chiplink concept proven: so far 3 types of SRS frontend hybrids
Portable Minicrates for the Desktop and Laboratory
SRS developers contribute on all fronts to make the system complete
Eurocrates for scalable systems up to very large size Rack-based systems
SRU box for the readout of 40 FEC cards to one link (10 GBE)
Up-scaling of small systems : keep the crate-based electronics, same SW
Tens of SRS systems already deployed in various Labs
2012 SRS demand ( ¼ Million Eu ) exceeds by large the first production
First semi-commercial production of SRS in expected with impatience
CERN-store adopted sales and logistics of SRS “as is”
Fully commercial SRS pardigm under negotiation
Commercial ATCA crate standard very promising for “new look and feel ” of SRS
Novel ideas for SRS cards with MPGD-specific functionality (trigger, HV, UV pulsing)
Sponsors, Developers, manpower, more Ideas, Welcome
16/04/2012

23. Backup
16/04/2012

24. SRS readout architecture as is now
COMMON
DAQ/Online/Offline
Control,Trigger
Networks 1/10/48 Gbit
Readout Units
DTC links: CAT6
Data/Trigger/Control
FEC cards
chip-link adapters
SPECIFIC
Chip links
Frontend ASICS/Detectors
16/04/2012