CERN Accelerating science

Injection Sequencer

Need something to drive the injection process. Make requests for beam to the injectors via the CBCM.

We will need an INJECTION SEQUENCE to be configured before the injection process is started. Set-up offline, this will drive the pre-loading of equipment settings and timing. And some of the checks to be performed before injection begins. It will then be used to sequence the requested injection sequence.

• Should eventually allow fully automatic invocation of given injection sequence
• Manual step through
• Manual abort
• Repeat step after abort
• Continue sequence after abort
• Configurable, savable, selectable injection sequences
• Injection sequence should be invokable from the main sequencer or from a dedicated GUI
• Need to establish processes for monitoring of injection efficiency into the LHC. The injection sequencer should accept input from these processes and halt the injection if thresholds are exceeded e.g. beam losses, beam lifetime etc.
• Accept input from Software Interlocks and halt sequence if machine conditions go unsafe [possibly also covered by CBCM].
• Load beam intensity dependent settings to BDI as required. Check that everything that needs to be loaded is loaded before starting injection.

For example:

Details of injecton request mechanics