1. ATLAS Detector Controls
Upgrade Plans for
ATLAS Detector Controls
S. Schlenker, CERN, Switzerland
for the ATLAS DCS Community

3. ATLAS DCS is part of JCOP!
DCS Upgrades …
Field-Bus
Network
+Optical Links
Main architecture design will be kept.
LS2
New system integrations NewSmallWheels, FastTrackTrigger Electronics, …
BE electronics: VME  PCIe, ATCA
LS3
New all-silicon InnerTracKer
Muons and calorimeters: FE electronics replacements
ELMB replacement
ATLAS DCS is part of JCOP!

4. DCS related Middleware
Front-End
New Paradigm for On-Detector DCS Data
Acquire DCS data via FE electronics and ship via optical links
CAN BUS
Power Supply
ELMB
CAVERN
COUNTING
ROOM
Operator Interface
~ hundreds m
Rack Server
CANopen
OPC Server
CAN
Interface
WinCC OA +
Trigger
~ hundreds m
Common
FE Interfaces
Network
DAQ
Optical links
DCS related Middleware
GBT-based
DCS
Common ownership
Network
Interface
Middleware
Operator Interface
COUNTING
ROOM
CAVERN
WinCC OA Back-End

5. Front-End Main LS3+ Challenge: DCS Data from Common FE Electronics
Radiation levels rise by factor of 10 and more
DCS Data from Common FE Electronics
Common solutions: atm only GBT-SA?
Dedicated ASICs, which also produce DCS data as e.g. for ITK
Optical links: GBT-based ...
Fieldbus interfaced (ELMB or similar)
Clear need for getting data via (FE electronics-)independent path:
Supervision needed during times when FE electronics OFF or DCS data acquisition in FE electronics not available
Do not want to depend on shared optical transmission and its infrastructure for very critical DCS data (e.g. temps)
Common solution:
Fieldbus? CAN bus – reliable, long range, suitable for environment, have experience, Ethernet – widely used, bus solutions need hw additions (e.g. EtherCat)
I/O concentrator: ELMB++ – proposed for phase II, more features and rad-tolerant, options still under discussion, need input!  FE&middleware mini-WS
2 GBT-SCA
GBTX
VTRX
DC-DC

6. Back-End Hardware DAQ-related DCS Data Providers
Optical receivers:
Receive FE data in counting room via e.g. GBT
Not „owned“ by DCS, need to ship DCS data to DCS server on arrival via network, must be independent of DAQ!  FELIX, custom FE receivers (?)
Critical: data availability and integrity, choose path with max independence
Off-detector electronics:
Other DCS data produced by off-detector electronics (e.g. calibration related)
Control/monitoring of off-detector components themselves (crates, boards)
DCS Hardware Components
DCS BE platform: COTS rack server
Field buses: CAN with Ethernet or USB CAN gateways, USB for low cost devices, Ethernet should become main fieldbus
COTS power supplies: JCOP deliverables! Wiener, Iseg and CAEN solutions, new common solutions from PH/ESE?

7. Back-End Software FE-Interface Software Back-End Software
Aim for OPC Unified Architecture being the main middleware interface for DCS:
see FE&middleware mini-workshop
Count on JCOP to provide OPC UA servers for all supported hardware (power supplies, VME crates, xTCA?)
Using OPC UA for CanOpen since 09/2013 in production – very stable
Initiated and developed OPC UA server generation framework  quasar, in collaboration with EN/ICE
IPbus OPC UA server released recently to interface BE electronics
Planning to implement OPC UA server for GBT-SCA (via FELIX), make it common development with other JCOP collaborators?
Aiming for embedded OPC UA running on off-detector electronics to avoid system specific integration protocols/solutions
Back-End Software
WinCC OA (= former PVSS) currently considered as only backbone SCADA solution also for Phase II
Modernization efforts? Counting on python as new additional scripting language
Adaption/creation of framework components needed to follow upgrade needs and evolution...

8. ATCA Integration Framework for WinCCOA Integration: fwATCA
Initial development by ATLAS Tile (R. Reed) and central DCS, FSM additions by CSC DCS (P. Moschovakos, K. Ntekas)
Communication with shelf via SNMP: no communication software development needed
Automatically discovers shelf contents and integrates it into WinCCOA application
Used in already in production
Requirements on ATCA shelf and boards
Requires ATCA shelf with Pigeon Point shelf manager mezzanine (widely used)
Board integration:
Board IPM Controller must implement ATCA standard for shelf manager integration in order to make e.g. sensors visible
Should be foreseen in board design and tested early!
 Use CERN IPMC when available

9. Sub-Detector Upgrades
S. Kerstens, P. Phillips
ITK
Pixel and Strips separated
Common interlocks and environment monitoring  ELMB successor?
FE data: FELIX? Not clear
BE-electronics: not clear yet
Powering: from counting rooms, no FE-PS, Pixels: most likely serial power scheme for with dedicated control ASIC, Strips: local DC-DC solution
LAr Calorimeter
Replace on-detector power supplies with point-of- load system using DC-DC converters
HV system remains ISEG based, uniformized
ELMB successor considered to be used on- detector (radiation requirements: TID = 580 Gy, NIEL = 9.2*1012 neq/cm2, SEE = 2.4*1012 h/cm2)
FE and BE electronics will be completely exchanged in Phase II  ATCA shelves, Phase I: 3 ATCA shelves
S. Chekulaev, L. Hervas

10. T. Alexopoulos, S. Zimmermann
Sub-Detector Upgrades
F. Martins, I. Pogrebnyak
Tile Calorimeter
Replace on-detector power supplies
HV system remains custom (HV micro)
ELMB successor considered to be used on-detector (radiation requirements: TID = 50.6 Gy, NIEL = 1.3*1012 neq/cm2, SEE = 2.7*1011 h/cm2)
FE and BE electronics will be completely exchanged in Phase II  ? ATCA shelves
FE data from FPGA GBT receiver to DCS via IPbus
Muon New Small Wheels
Installation already in Phase I (LS2)
Two different technologies: microMeGas (MM) and sTGC
Common temp and B-field monitoring
Powering: CAEN for sTGC, MM to be decided
FE data: various temperatures via GBT-SCA (~7k), +separate temp sensors and B-field read out via ELMBs
BE-electronics: GBT+FELIX
T. Alexopoulos, S. Zimmermann

11. TriggerDAQ & Common Infrastructure
Trigger Systems
Four systems: L1Calo, FastTracKtrigger (FTK), L1Muons, L1Topo
Few VME crates still planned
Total number of foreseen ATCA shelves:
Board monitoring either via shelf managers and IPMC (ideally CERN) or IPbus directly
Pursuing partially custom developments: using Arduinos for fan tray control and special power supplies (powerONE PS, Wiener PS)
P. Thompson
Counting Room Rack Control
Maybe need complete redesign of standard rack control and monitoring:
PLC based Twido and switchboard control/monitoring
ELMB based turbine monitoring

12. Conclusions DCS upgrades for ATLAS start in LS2, bulk in LS3
New front-end electronics solutions change DCS data path drastically
New powering schemes will require new common equipment and developments for power control
Off-detector electronics: move from VME to ATCA and PCIe solutions
Aiming for use of OPC UA for all types of integrations
Hoping for intensified collaboration effort within JCOP and especially increased support from EN/ICE and other support groups!
Coherency: design changes are merged with device logic