ICALEPCS2011 - List of Authors (Alessio, F.)

Paper

Title

Page

The LHCb Experiment Control System: on the Path to Full Automation

20

C. Gaspar, F. Alessio, L.G. Cardoso, M. Frank, J.C. Garnier, R. Jacobsson, B. Jost, N. Neufeld, R. Schwemmer, E. van Herwijnen
CERN, Geneva, Switzerland
O. Callot
LAL, Orsay, France
B. Franek
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom

LHCb is a large experiment at the LHC accelerator. The experiment control system is in charge of the configuration, control and monitoring of the different sub-detectors and of all areas of the online system: the Detector Control System (DCS), sub-detector's voltages, cooling, temperatures, etc.; the Data Acquisition System (DAQ), and the Run-Control; the High Level Trigger (HLT), a farm of around 1500 PCs running trigger algorithms; etc. The building blocks of the control system are based on the PVSS SCADA System complemented by a control Framework developed in common for the 4 LHC experiments. This framework includes an "expert system" like tool called SMI++ which we use for the system automation. The full control system runs distributed over around 160 PCs and is logically organised in a hierarchical structure, each level being capable of supervising and synchronizing the objects below. The experiment's operations are now almost completely automated driven by a top-level object called Big-Brother which pilots all the experiment's standard procedures and the most common error-recovery procedures. Some examples of automated procedures are: powering the detector, acting on the Run-Control (Start/Stop Run, etc.) and moving the vertex detector in/out of the beam, all driven by the state of the accelerator or recovering from errors in the HLT farm. The architecture, tools and mechanisms used for the implementation as well as some operational examples will be shown.

Slides MOBAUST06 [1.451 MB]

WEPMU024

The Radiation Monitoring System for the LHCb Inner Tracker

1115

O. Okhrimenko, V. Iakovenko, V.M. Pugatch
NASU/INR, Kiev, Ukraine
F. Alessio, G. Corti
CERN, Geneva, Switzerland

The performance of the LHCb Radiation Monitoring System (RMS) [1], designed to monitor radiation load on the Inner Tracker [2] silicon micro-strip detectors, is presented. The RMS comprises Metal Foil Detectors (MFD) read-out by sensitive Charge Integrators [3]. MFD is a radiation hard detector operating at high charged particle fluxes. RMS is used to monitor radiation load as well as relative luminosity of the LHCb experiment. The results obtained by the RMS during LHC operation in 2010-2011 are compared to the Monte-Carlo simulation.
[1] V. Pugatch et al., Ukr. J. Phys 54(4), 418 (2009).
[2] LHCb Collaboration, JINST S08005 (2008).
[3] V. Pugatch et al., LHCb Note 2007-062.

Poster WEPMU024 [3.870 MB]

Paper	Title	Page
MOBAUST06	The LHCb Experiment Control System: on the Path to Full Automation	20
	C. Gaspar, F. Alessio, L.G. Cardoso, M. Frank, J.C. Garnier, R. Jacobsson, B. Jost, N. Neufeld, R. Schwemmer, E. van Herwijnen CERN, Geneva, Switzerland O. Callot LAL, Orsay, France B. Franek STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
	LHCb is a large experiment at the LHC accelerator. The experiment control system is in charge of the configuration, control and monitoring of the different sub-detectors and of all areas of the online system: the Detector Control System (DCS), sub-detector's voltages, cooling, temperatures, etc.; the Data Acquisition System (DAQ), and the Run-Control; the High Level Trigger (HLT), a farm of around 1500 PCs running trigger algorithms; etc. The building blocks of the control system are based on the PVSS SCADA System complemented by a control Framework developed in common for the 4 LHC experiments. This framework includes an "expert system" like tool called SMI++ which we use for the system automation. The full control system runs distributed over around 160 PCs and is logically organised in a hierarchical structure, each level being capable of supervising and synchronizing the objects below. The experiment's operations are now almost completely automated driven by a top-level object called Big-Brother which pilots all the experiment's standard procedures and the most common error-recovery procedures. Some examples of automated procedures are: powering the detector, acting on the Run-Control (Start/Stop Run, etc.) and moving the vertex detector in/out of the beam, all driven by the state of the accelerator or recovering from errors in the HLT farm. The architecture, tools and mechanisms used for the implementation as well as some operational examples will be shown.
	Slides MOBAUST06 [1.451 MB]

WEPMU024	The Radiation Monitoring System for the LHCb Inner Tracker	1115
	O. Okhrimenko, V. Iakovenko, V.M. Pugatch NASU/INR, Kiev, Ukraine F. Alessio, G. Corti CERN, Geneva, Switzerland
	The performance of the LHCb Radiation Monitoring System (RMS) [1], designed to monitor radiation load on the Inner Tracker [2] silicon micro-strip detectors, is presented. The RMS comprises Metal Foil Detectors (MFD) read-out by sensitive Charge Integrators [3]. MFD is a radiation hard detector operating at high charged particle fluxes. RMS is used to monitor radiation load as well as relative luminosity of the LHCb experiment. The results obtained by the RMS during LHC operation in 2010-2011 are compared to the Monte-Carlo simulation. [1] V. Pugatch et al., Ukr. J. Phys 54(4), 418 (2009). [2] LHCb Collaboration, JINST S08005 (2008). [3] V. Pugatch et al., LHCb Note 2007-062.
	Poster WEPMU024 [3.870 MB]