bruno belbute, october 2006 presentation rehearsal for the follow-up meeting of the protocol between...
TRANSCRIPT
Bruno Belbute, October 2006
Presentation Rehearsal for the Follow-up meeting of the
Protocol between AdI and CERN
Bruno Belbute, October 2006 2
Overview❚ AdI stands for “Agência de Inovação” (I
believe it can be translated as “Innovation Agency”).
❚ AdI has a protocol with CERN that allows young portuguese graduates to profit from advanced scientific or technological FORMATION at CERN on the scheme of on-the-job-training.
❚ It is on behalf of that protocol that I’m here.❚ I was asked to make a 10 min presentation
about the developed work this year, to be presented next October 25 to representatives of AdI coming at CERN.
❚ My presentation follows…
Bruno Belbute, October 2006
Follow-up meeting of the Administrative Protocol between AdI, S.A. and CERN for the on-the-job training of
Portuguese technical graduates
SFRH / BEST / 15135 /2004
Bruno Belbute, October 2006 4
Overview❚ CERN
❙ European Organization for Nuclear Research❚ LHC
❙ Large Hadron Collider❚ LHCb
❙ Large Hadron Collider beauty❙ Aimed at measuring the parameters of CP violation in the
interactions of b-hadrons (heavy particles containing a bottom quark).
❚ LHCb Computing Group❙ Provides support for all software development,
management of the computing infrastructure, building of common components, choice of architectural designs and standards on the LHCb experiment.
❙ Design of the LHCb’s Experiment Control System.
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Experiment Control System
❚ECS stands for Experiment Control System.
❚ECS will be in charge of the configuration, monitoring and operation of all experimental equipment.
❚ECS is a hierarchical system built as a tree of interconnected control nodes.
❚ECS makes use of the concept of Finite State Machines (FSM).
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Experiment Control System
❚Based on the PVSS II SCADA system toolkit.
❚The monitoring and control of the experiment’s infrastructure is one of the sub-systems of ECS and comprises:❙Control of the power distribution to the
racks and crates housing the electronics.❙Monitoring of environment parameters like
temperature, humidity, etc.
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ECS Scope
Detector Channels
Front End Electronics
Readout Network
High Level Trigger
Storage
L0
Experi
men
t C
on
trol S
yst
em
DAQ
DCS Devices (HV, LV, GAS, Temperatures, etc.)
External Systems (LHC, Technical Services, Safety, etc)
TFC
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ECS Generic Architecture
...
To Devices (HW or SW)
Com
mands
Sta
tus
&
Ala
rms
ECS
DCS DAQ
DetDcs1
DetDcsN
SubSys1
SubSys2
Dev1
Dev2
Dev3
DetDaq1
SubSysN
DevN
LHCT.S.
...GAS
Infrastructure
Con
trol U
nit
sD
evic
e
Un
its ...
...
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Control Nodes❚At the higher levels we have control nodes
called Control Units (CU) on which an operator can connect to take the control on the associated sub tree of the system.
❚At the very lower level we have the control nodes called Devices Units (DU) connected to real hardware components they supervise.
❚A FSM toolkit was developed in order to allow the definition of the behaviour of the control nodes, this toolkit also provides a general FSM panel that allows to see the FSM tree bellow a specified Control Unit.
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Developed Work❚ My task was to include three types of
hardware under the LHCb's ECS, namely:❙ High Voltage Caen Power Supplies❙ Low Voltage Caen Power Supplies❙ Wiener Marathon Power Supplies
❚ Two different components were released:❙ High Voltage Component (High Voltage Caen Power
Supplies)❙ Low Voltage Component (Low Voltage Caen Power Supplies
and Wiener Marathon Power Supplies)
❚ A Finite State Machine and an operation/visualization set of panels was defined and implemented according to the group's ECS guidelines.
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High Voltage Component
OFF
READY
RAMP_OFF
RAMP_READY
RAMP_SB1
RAMP_SB2
STANDBY1
STANDBY2
ERROR
RECOVER
❚ A transition to and from ERROR can occur from any and to any state. Those transitions are not indicated for readability reasons.
❚ The commands Go_OFF, Go_READY, Go_STANDBY1 and Go_STANDBY2 are not indicated for readability reasons.
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High Voltage Component
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Low Voltage Component
OFF READY
NOT_READY
Switch_OFF
Switch_ON
Switch_OFF Switch_ON
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Low Voltage Component
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Conclusions
❚Learned how to use a SCADA system (namely PVSS II) to communicate with real hardware.
❚Opportunity to know people form all over the world, valuable for personal and professional purposes.
❚Opportunity to work on a international scientific institute.
Bruno Belbute, October 2006
Added Information
Just for the Online Meeting
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More on the Components
❚ In reality FOUR types of hardware where included under the LHCb's ECS, namely:❙ High Voltage Caen Power Supplies❙ Low Voltage Caen Power Supplies❙ Wiener Marathon Power Supplies❙ Wiener Power Supplies
❚ THREE different components were built:❙ High Voltage Component (High Voltage Caen Power Supplies)❙ Low Voltage Component (Low Voltage Caen Power Supplies
and Wiener Marathon Power Supplies)❙ Wiener Component (Wiener Power Supplies) – never released
❚ A Finite State Machine and an operation/visualization set of panels was defined and implemented to each one of those components.
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More on the Components
❚ The HV and LV components use the functionalities provided by the “FSM-ConfDB Interface”.
❚ What is it?❙ The FSM transitions will require the re-configuration of
parts of the ECS. All configuration parameters of the devices integrating the control systems are stored in an external database called Configuration DB.
❙ The main task of the FSM-ConfDB Interface is to ensure the availability of the configuration data in PVSS, used during the FSM transitions, for a given type of run mode, e.g. PHYSICS, COSMICS, etc. This is achieved by synchronizing the contents of the Configuration DB and of the PVSS internal caches used by the FSM at the beginning of the run.
❙ More information on:http://itcobe.web.cern.ch/itcobe/Projects/Framework/
Download/Components/FSMConfDB/welcome.html
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More on the Components
❚Caution:❙System is only prepared to work with recipies on
Cache, no connection or synchronization whit the Configuration Database is provided.
❙For now the Configurator has to be initialized “by hand”.
❚Good news:❙Tools for creating the first time recipies and adding
the Configurators to a FSM tree are provided.
❚Questions:❙Where are this tools and what do they do?❙What is a Configurator?
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More on the Components
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More on the Components
Vertex
HV
1 2 3 4 1 2 3 4 1 2 3 4
ConfDB
❚ All FSMConfDB DU must be initialized (for now by hand).
❚ Builds an internal list of DU in the SMI++ domain to be configured.
❚ Initializes the connection to the ConfDB or Chache.
❚ When a command is given, the FSMConfDB DU applies the recipe to the proper DUs.
LV Cooling
CU DU DU FSM-ConfDB
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More on HV Component
❚It is released, more information on:❙ http://lhcb-online.web.cern.ch/lhcb-online/ecs/lbCaenHV/
default.html
❚There are some more panels I didn’t show yet! Let’s see them all…
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More on HV Component
Bruno Belbute, October 2006 24
More on HV Component
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More on HV Component
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More on LV Component
❚It is released, more information on:❙ http://lhcb-online.web.cern.ch/lhcb-online/ecs/lbLV/default.html
❚It is the only one I know it’s been used by several people in different sub-experiments.
❚Panels and functionality similar to HV Component.
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Wiener Component
❚It has not been released.❚It was meant to be used on the
work I’m doing right now. We'll see that latter.
❚Let’s just have a look at how it looks:
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Wiener Component
❚DCS domain, so the FSM is just like the LV one.
❚It was not made to work with the FSM-Conf DB Interface.
❚It has a similar panel to the HV and LV, with small leds representing the crates.
❚The details panel looks like this:
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Wiener Component
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Current Work
❚The Rack Control Application it was tested with the set of racks on building 4. Some problems found and sent to correction.
❚A tool for constructing automatically the FSM for the Barracks is being implemented.
❚How will it work?
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Current Work
❚It reads the information on Zones (Barracks), Racks and Wiener Crates from the EMDB.
❚It adds all of those to the hardware view of the DEN, it uses those to create the FSM.
❚FSM Objects are being implemented.❚The structure of the FSM is being
thought.
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Current Work
❚As far as I defined until now it will look like this:
CU Barrack
LU Rack
DU Rack
LU Crate
DU Crate
see rack panel
see wiener panel
Bruno Belbute, October 2006
END