ICALEPCS2013 - List of Authors (Jacquet, D.)

Paper

Title

Page

Online Status and Settings Monitoring for the LHC Collimators

836

G. Valentino
University of Malta, Information and Communication Technology, Msida, Malta
R.W. Aßmann, D. Jacquet, S. Redaelli, E. Veyrunes
CERN, Geneva, Switzerland

The Large Hadron Collider is equipped with 100 movable collimators. The LHC collimator control system is responsible for the accurate synchronization of around 400 axes of motion at the microsecond level, and with the precision of a few micrometres. The status and settings of the collimators can be monitored by three displays in the CERN Control Center, each providing a different viewpoint onto the system and a different level of abstraction, such as the positions in mm or beam size units. Any errors and warnings are also displayed. In this paper, the display operation is described, as well as the interaction that occurs when an operator is required to identify and understand an error in the collimator settings.

Poster TUPPC111 [2.260 MB]

THPPC058

LSA - the High Level Application Software of the LHC - and Its Performance During the First Three Years of Operation

1201

D. Jacquet, R. Gorbonosov, G. Kruk
CERN, Geneva, Switzerland

The LSA (LHC software architecture) project was started in 2001 with the aim of developing the high level core software for the control of the LHC accelerator. It has now been deployed widely across the CERN accelerator complex and has been largely successful in meeting its initial aims. The main functionality and architecture of the system is recalled and its use in the commissioning and exploitation of the LHC is elucidated.

Poster THPPC058 [1.291 MB]

THPPC105

The LHC Injection Sequencer

1307

D. Jacquet, J.C. Bau, I. Kozsar
CERN, Geneva, Switzerland

The LHC is the largest accelerator at CERN. The 2 beams of the LHC are colliding in four experiments, each beam can be composed up to 2808 high intensity bunches. The beams are produced at the LINAC, is shaped and accelerated in the LHC injectors to 450GeV. The injected beam contains up to 288 high intensity bunches, corresponding to a stored energy of 2MJ. To build for each LHC ring the complete bunch scheme that ensure a desired number of collision for each experiment, several injections are needed from the SPS to the LHC. The type of beam that is needed and the longitudinal emplacement of each injection have to be defined with care. This process is controlled by the injection sequencer and it orchestrates the beam requests. Predefined filling schemes stored in a database are used to indicate the number of injection, the type of beam and the longitudinal place of each. The injection sequencer sends the corresponding beam requests to the CBCM, the central timing manager which in turn synchronizes the beam production in the injectors. This paper will describe how the injection sequencer is implemented and its interaction with the other systems involved in the injection process.

Poster THPPC105 [0.606 MB]

Paper	Title	Page
TUPPC111	Online Status and Settings Monitoring for the LHC Collimators	836
	G. Valentino University of Malta, Information and Communication Technology, Msida, Malta R.W. Aßmann, D. Jacquet, S. Redaelli, E. Veyrunes CERN, Geneva, Switzerland
	The Large Hadron Collider is equipped with 100 movable collimators. The LHC collimator control system is responsible for the accurate synchronization of around 400 axes of motion at the microsecond level, and with the precision of a few micrometres. The status and settings of the collimators can be monitored by three displays in the CERN Control Center, each providing a different viewpoint onto the system and a different level of abstraction, such as the positions in mm or beam size units. Any errors and warnings are also displayed. In this paper, the display operation is described, as well as the interaction that occurs when an operator is required to identify and understand an error in the collimator settings.
	Poster TUPPC111 [2.260 MB]

THPPC058	LSA - the High Level Application Software of the LHC - and Its Performance During the First Three Years of Operation	1201
	D. Jacquet, R. Gorbonosov, G. Kruk CERN, Geneva, Switzerland
	The LSA (LHC software architecture) project was started in 2001 with the aim of developing the high level core software for the control of the LHC accelerator. It has now been deployed widely across the CERN accelerator complex and has been largely successful in meeting its initial aims. The main functionality and architecture of the system is recalled and its use in the commissioning and exploitation of the LHC is elucidated.
	Poster THPPC058 [1.291 MB]

THPPC105	The LHC Injection Sequencer	1307
	D. Jacquet, J.C. Bau, I. Kozsar CERN, Geneva, Switzerland
	The LHC is the largest accelerator at CERN. The 2 beams of the LHC are colliding in four experiments, each beam can be composed up to 2808 high intensity bunches. The beams are produced at the LINAC, is shaped and accelerated in the LHC injectors to 450GeV. The injected beam contains up to 288 high intensity bunches, corresponding to a stored energy of 2MJ. To build for each LHC ring the complete bunch scheme that ensure a desired number of collision for each experiment, several injections are needed from the SPS to the LHC. The type of beam that is needed and the longitudinal emplacement of each injection have to be defined with care. This process is controlled by the injection sequencer and it orchestrates the beam requests. Predefined filling schemes stored in a database are used to indicate the number of injection, the type of beam and the longitudinal place of each. The injection sequencer sends the corresponding beam requests to the CBCM, the central timing manager which in turn synchronizes the beam production in the injectors. This paper will describe how the injection sequencer is implemented and its interaction with the other systems involved in the injection process.
	Poster THPPC105 [0.606 MB]