Cargando…

LHC Collimators Low Level Control System

The low level control system (LLCS) of the LHC collimators is responsible for accurate synchronization of 500 axes of motion at microsecond level. Stepping motors are used in open loop ensuring a high level of repeatability of the position. In addition, a position survey system based on Resolver and...

Descripción completa

Detalles Bibliográficos
Autores principales: Masi, A, Losito, R
Lenguaje:eng
Publicado: 2008
Materias:
Acceso en línea:https://dx.doi.org/10.1109/TNS.2007.914206
http://cds.cern.ch/record/1110972
_version_ 1780914290489819136
author Masi, A
Losito, R
author_facet Masi, A
Losito, R
author_sort Masi, A
collection CERN
description The low level control system (LLCS) of the LHC collimators is responsible for accurate synchronization of 500 axes of motion at microsecond level. Stepping motors are used in open loop ensuring a high level of repeatability of the position. In addition, a position survey system based on Resolver and LVDT sensors and operating at approximately 100 Hz, verifies in real-time the position of each axis with some tens of micrometers accuracy with respect to the expected position. The LLCS is characterized by several challenging requirements such as high reliability, redundancy, strict timing constraints and compactness of the low level hardware because of the limited space available in the racks underground. The National Instruments PXI platform has been proposed and evaluated as real-time low level hardware. In this paper the architecture of the LHC collimators LLCS is presented. The solution adopted for implementing motion control and positioning sensors reading on the PXI platform are detailed.
id cern-1110972
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2008
record_format invenio
spelling cern-11109722019-09-30T06:29:59Zdoi:10.1109/TNS.2007.914206http://cds.cern.ch/record/1110972engMasi, ALosito, RLHC Collimators Low Level Control SystemAccelerators and Storage RingsEngineeringThe low level control system (LLCS) of the LHC collimators is responsible for accurate synchronization of 500 axes of motion at microsecond level. Stepping motors are used in open loop ensuring a high level of repeatability of the position. In addition, a position survey system based on Resolver and LVDT sensors and operating at approximately 100 Hz, verifies in real-time the position of each axis with some tens of micrometers accuracy with respect to the expected position. The LLCS is characterized by several challenging requirements such as high reliability, redundancy, strict timing constraints and compactness of the low level hardware because of the limited space available in the racks underground. The National Instruments PXI platform has been proposed and evaluated as real-time low level hardware. In this paper the architecture of the LHC collimators LLCS is presented. The solution adopted for implementing motion control and positioning sensors reading on the PXI platform are detailed.oai:cds.cern.ch:11109722008
spellingShingle Accelerators and Storage Rings
Engineering
Masi, A
Losito, R
LHC Collimators Low Level Control System
title LHC Collimators Low Level Control System
title_full LHC Collimators Low Level Control System
title_fullStr LHC Collimators Low Level Control System
title_full_unstemmed LHC Collimators Low Level Control System
title_short LHC Collimators Low Level Control System
title_sort lhc collimators low level control system
topic Accelerators and Storage Rings
Engineering
url https://dx.doi.org/10.1109/TNS.2007.914206
http://cds.cern.ch/record/1110972
work_keys_str_mv AT masia lhccollimatorslowlevelcontrolsystem
AT lositor lhccollimatorslowlevelcontrolsystem