Proposal for Decisions 2007 Work Baseline M.Jonker for the Cocost* * Collimation Controls Steering Team

Proposal for Decisions and 2007 Work Baseline Objective: Define a clear and non-controversial basis for important work in 2007 and beyond. This is a common proposal and supported by all members of the COCOST.

Proposal Hardware Choices PXI based system should be adopted for the low level system:  It is the best technical solution and also fits all other requirements. ( Lower coast is a convenient side effect). ATB ensures procurement, installation and maintenance of low level hardware and software. The full technical specification is implemented (no reduction of scope for lowering cost):  Fully sufficient precision and response is possible. The full redundancy (as possible from the position sensors) is implemented:  Will result in improved operational efficiency. All final hardware (also at the middle level) will be procured now, freezing basic architecture: –PXI, PLC, PC gateways, optical transmission, …

Proposal Functionality in 2007 Function-driven movements in all controls levels. Simultaneous synchronized movements of motors. Core machine protection is implemented at low level. The connection to machine-critical settings (MCS) and interlock system is implemented throughout the full architecture:  Need a person to write technical specification, define test protocols and validation procedures throughout full collimator controls architecture (fraction of FTE from some controls expert?).  Further review of this important topic in Spring The post-mortem system is implemented at Low Level (MDS, PRS) and supervisory system (CSS). Preparation for the fast BLM-based automatic set-up.

Possible Optimization of System These technical issues are under discussion and do not need decision today. We have working solutions, however, the solutions can be optimized to increase performance, reduce number of components and associated experts for maintenance: –Important and successful features of the current CSS to be integrated with facilities of the Fesa environment (Will be discussed with Fesa support). –Merging of the FESA servers of CSS / LowLevel when most convenient.

Further Tests and Documentation Provide a good infrastructure as a test bed for the Collimation Control system –Building 252, development of low level and CSS –All installed collimators TI & LHC: CSS and CCC application in LSA environment. –LSS5, if recabled and equipped with standard motors and position sensors. Beam related equipment tests (e.g. BLM based optimization tests during MD’s). Organization of documentation, specifications, procedures and sources with read access to all COCOST members.

Updated Collimator Control Milestones Basic command-driven control August 2006:Basic command-driven control of single collimators for SPS test, TT40 test and commissioning of transfer line collimators  Successfully demonstrated in Nov non-standard movable objects February 2007:Review and decision on detailed interface to non-standard movable objects (TCDQ, Roman Pots,…). function-driven, synchronized control March 2007:First tests on function-driven, synchronized control of a collimator ensemble (several 10's of collimators), like required for the LHC. April 2007:Preliminary technical specification of safe collimator controls and review. May 2007:Position and surveillance based on ordinary movement functions (low level). Automatic detection and signaling of lost steps based on resolvers. June 2007:Final technical specification of safe collimator controls. July 2007:Integration with low level of experimental movable devices (Roman Pots). collimator beam-based alignment August 2007:Non-automatic collimator beam-based alignment. Function-driven, synchronized control of a collimation system for commissioning. August 2007:Post Mortem buffers are operational. September 2007:Critical settings based surveillance functions are operational. October 2007:Testing and validation of safe LHC collimator controls. March 2008:First tests on automatic BLM-based collimator set-up. Availability of fast automatic BLM-based collimator set-up July 2008:Availability of fast automatic BLM-based collimator set-up to allow for efficient machine set- up for luminosity of up to (up to 30% of nominal beam intensity).

Manpower and Responsibilities Our understanding: –The present work responsibilities and manpower are kept until successful implementation and hardware & beam commissioning of the baseline control system for collimators. Note: Controls for temperature sensors (PLC) is implemented by CO as agreed in end –Work responsibility also implies the responsibility for commissioning and maintenance of sub-systems (other approaches are considered quite inefficient). –Additional support for the realization of the Machine Protection chain in collimators is required for writing technical specification, definition of test protocols and validation. –Support for extensions of CO environment will be provided were needed. Examples: LSA sanity check (update of lsa settings to reflect real position after beam based alignment or motor lost steps). Has been discussed with Mike Lamont. Fesa enhancements / performance issues. Diagnostics tools.