1. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC Detector Control System
Introduction
Requirements
Systems description
PVSS prototype
FSM prototype
XDAQ prototype
Conclusions
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

2. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
CMS Experiment Control
I.N.F.N. Naples
Run Controls (RCS):
Configure and operate all local/global data taking sessions, Monitor and protect the measurements and the data flow
Based on the CMS online software framework (XDAQ – RCS) ad commercial products (DBs, SOAP, XML.....)
Detector Controls (DCS):
Setup and monitor the
detectors and the environment
Monitor and protect the apparatus equipment
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

3. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
DCS and Run Control
I.N.F.N. Naples
Central
DCS
Central
RCS
Under discussion:
Data taking – States, Local and Central DAQ/DCS
No beam periods – Central DCS takes control of DCS tree
DCS services
Sub-Detector
Controller
Local DCS node
Local
XDAQ nodes
Interfaces based on SOAP already existing:
RCS – DCS : commands and status ownership
XDAQ – PVSS: data exchange
Electronics
Setup,
etc.
Local
DCS tree for
HV, LV, P, T, etc.
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RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

4. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
What we have with PVSS II and JCOP
I.N.F.N. Naples
Channel DB Manager to define your hardware and software variables, define alarm, connect to hardware..
Panel Editor  to create/modify your panels
Alarm Handling  to generate/monitor alarms
Electronic Logbook  operation logbook
Archiving  to archive your data
In the future it will be correlated to the Oracle CMS database.
State Machine (SMI)  JCOP tool
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

5. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Databases
I.N.F.N. Naples
DCS environmental data is stored in an external Oracle DB
DCS configuration data can be stored/retrieved from DCS Oracle DB
Build interface between Framework and CMS Equipment Management DB:
Already done for Rack Control Application - CMS
General hardware configuration (HV, etc.) – JCOP Delivery
Integration issues with RMCS, XDAQ, DCS, Sub-detector DBs
see the M. Abbrescia talk
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

6. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC DCS structure
I.N.F.N. Naples
ECS
Modular and hierarchical
Partitionable
DCS
DAQ
TRG …. ….
Functionality
(FSM)
Config.
Logging
Alarm
handling
Access
PVSS + FW
HCAL
ECAL MU TK
Pixel
CSC
RPC DT
Detector
Barrel
Endcap
Sub-system HV Cu LV Cu T Cu
Easy to operate
Scalable HV Du LV Du T Du
Device
Physical
device
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

7. RPC DCS schema Central DCS Central RCMS sub-detector controller
I.N.F.N. Naples
Central
DCS
Central
RCMS
sub-detector
controller
condition DB
Detector
Local XDAQ
Local DCS
USC55
Detector
720 ch
60 A3009
20 EASY LV
can-bus
4680 FECs
800 Link Boards
60 Crates
optical
fiber
480 ch
30 distrib.
80 A3512
12 EASY
gas
FEC LV HV
can-bus
cooling
300 sensors
10 ADC
A3801 LV T
can-bus
rack
config DB
treshold/width
setpoints

8. Milestones Front-end HighV LowV Cooling Gas Racks DB COMPONENTS AREA
I.N.F.N. Naples
COMPONENTS
AREA
HW. AVAIL
SW AVAIL
HW INTEGR
SW INTEGR
MANPOWER
Front-end
DCS
1Q03 proto
1Q04 proto
1Q05 proto
2Q06
3Q06
Warsaw
Napoli
HighV
JCOP/DCS
4Q02 proto
4Q03 proto
3Q05 proto
3Q05
1Q06
Paolucci
Polese
LowV
Cooling
JCOP/JCOV ?
GWG
P.Paolucci
Gas
GWG/JCOP
4Q04
4Q05
Racks
JCOP/CMS DB
Abbrescia Paolucci
* In red the new (june05) date. In black the old (jun03)

9. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC DCS Status
I.N.F.N. Naples
The PVSS-DCS prototype has been developed by G. Polese and P. Paolucci and extensively tested at CERN during the JCOP-DCS month dedicated to the RPC (feb 05)
RPC muon System for DCS is developed in the form of a hierarchy where every object is represented as a node of the tree, following CMS structure.
Its architecture has been developed using the framework components.
Naming and color framework conventions are respected !!
Alarm conditions on HV and LV devices have been set and each channel has a summary alarm.
It will be shown in the next slides.
A first XDAQ-DCS for the Front-End is ready from June 2005 (Warsaw)
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

10. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC FSM structure
I.N.F.N. Naples
Each single element of the structure is view as a node of a state machine, build as a hierarchical tree.
The State Machine has been developed and test during Feb 05 with the JCOP/CMS experts.
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

11. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC FSM schema
I.N.F.N. Naples
DCS States: ON, OFF, ERROR
RPC States: ON, OFF, STANDBY, RUMP1STEP, RAMP2STEP, ERROR
STANDBY: HV intermediate voltage, LV OFF;
ON: HV nominal voltage, LV ON;
RAMP1STEP: from OFF to STANDBY; RAMP2STEP: from STANDBY to ON;
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

12. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC FSM schema
I.N.F.N. Naples
DCS Top Node State:
ON, OFF, ERROR ON
OFF
Error
Intermediate Node State:
Wheel
Sector
Chamber
ON, OFF, ERROR, STANDBY
RAMP1STEP, RAMP2STEP ON
OFF
RUP
RDW
Hardware Device Node State:
ON, OFF, RUP, RDW, ERROR and TRIP
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RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

13. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
DCS RPC Top Node
I.N.F.N. Naples
SECTOR SUMMARY ALARM
SECTOR FSM STATUS
We are studying the possibility to use a summary alarm for sectors to integrate into RPC top node. this alarms is an or condition of all sector’s chambers.
HARDWARE VIEW
to access at the same device info but as a different representation
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

14. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC DCS Wheel Node
I.N.F.N. Naples
We ask for a MAJORITY with
multiple requests:
if > 2 sectors in error  wheel error
if > 2 sectors in STB  wheel STB
Panel to load setpoints
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

15. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC DCS Sector Node
I.N.F.N. Naples
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

16. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
RPC DCS Chamber Node
I.N.F.N. Naples
Alarm Summary Status
Note that the Device node (bottom node) has the following states:
ON, OFF, RAMPING_UP
RAMPING_DOWN,
ERROR and TRIP
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

17. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Hardware Devices Note (Leafs)
I.N.F.N. Naples
Set value and Apply for all channel parameters
ACTION:
possibility of mask/unmask and acknowledge each single parameter or all together
LOAD HD
Additional panel to load settings from the hardware
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

18. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Temperature sensor
I.N.F.N. Naples
Our goal is to measure the iron gap temperature with a precision of 1oC in order to:
compensate the HV working point in case of a large gradient of the temperature e/o atmospheric pressure;
study the RPC aging and the current/noise behaviors taking into account this crucial parameter;
Switch off the chamber/sector/wheel in case of “high” temperature.
We have decided to use
the Analog Device
AD592BN transducer,
after having tested
different sensors.
AD592 temperature transducer
High Pre-calibrated Accuracy: 0.5oC +25oC
Excellent Linearity: 0.158C max (0oC to +70oC)
Wide Operating Temperature Range: –25oC to +105oC
Single Supply Operation: +4 V to +30 V
Excellent Repeatability and Stability
High Level Output: 1 mA/K
Two Terminal Monolithic IC: Temperature In/Current Out
Minimal Self-Heating Errors
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

19. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Rack Control
I.N.F.N. Naples
EMDS Interface
FW Device Editor
Rack Monitoring
Rac
3D View (in development)
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

20. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Gas Control Project
I.N.F.N. Naples
Experiment Gas Systems have a common implementation (provided by CERN Gas Group & JCOP)
All the sub-detector Gas Control Systems are supervised by a single PVSS system (redundancy is foreseen)
All gas parameters are made available to Central DCS or Sub-detector DCSs.
Sub-detector panels may display any gas parameters. These panels will not allow any actions. All actions must be performed from the Gas System panels.
Pannels in the Gas System will be developed and maintained by the GCS team. These can be accessed from any DCS station. Actions can be performed by shift operator and/or sub-detector gas expert (different users have different permissions)
A central gas support team, including piquet service, will be provided for all the experiments.
Approved by CMS DCS Board
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

21. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Front End Board I
I.N.F.N. Naples
The front end electronic boards communicate with the Link Board through the I2C bus;
Each Slave LB receives data from up to 6 FEBs  96 strips;
Each Master LB is connected to, not more, than 2 SLB;
MLB transmits data to the control room via optical fiber;
Each LB crate house up to 8 LBs and has 1 Control Board (CCU);
The RPC continuous monitoring (noise rate, occupancy…) will have a refresh rate of 10 sec;
For each strip the events before and after windowing are counted during a defined period of time. That allows plotting of rates and efficiency;
There are two 32-bit counters for each group of 128 channels/strips;
The amount of data to be sent is 2*32*128 = 8 Kb/10s/LB/plot.
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

22. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Link Board Schema
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

23. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Front End Board II
I.N.F.N. Naples
The theoretical throughput of a CCU chain (up to 27 CBs) is 4 MB/s.
The theoretical throughput of a LB box is 4 MB/s / 27 = 152 KB/s.
The theoretical throughput of a Link Board is 152 KB/s / 8 = 19 KB/s.
Required throughput for a continuous monitoring of one RPC is:
128 strips * 2 counters * 32 bits = 8 Kb/10s = 100 Bytes/s.
The I2C communication does not contribute significantly to the total CCU load.
The total bandwidth depends on the number of CB's in single CCU chain (serviced by a single FEC).
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RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

24. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
First examples Clusters Size Distribution
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RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

25. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
DCS RPC FEC (Warsaw)
Prototype of XDAQ application for accessing FEBs is ready
Compatible with XDAQ version 3.1
SOAP interface allowing to:
Read temperature
Read/write VTH
Read/write VMon
Simple Web interface to control those parameters ready.
FEB
FEB
FEB
XDAQ Executive
LinkBox Access Application
I2C
LINK BOX
SOAP PC
CCU/FEC chain
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

26. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
DCS FEC Web Interface
Web application written in Java using JavaServer Faces and Axis
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli

27. RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli
Conclusion
I.N.F.N. Naples
The PVSS and XDAQ prototype are working and they will be tested extensively during the Cosmic Challenge
The temperature readout has to be included in the PVSS proto
The massive control of the FEB has to be tested in XDAQ
Final state machine and other tools (alarm handling, logfile…) will be certainly improved after the Cosmic Challenge test and with new version of JCOP.
Massive configuration and DB interface has to be tested as soon as possible.
The interface between PVSS, XDAQ and RCS has to be developed and tested for middle 2006.
11/16/2018
RPC Manufacturing Review - Pierluigi Paolucci - I.N.F.N. Napoli