LHC Beam Operation Workshop - Evian 7-9 December 2010

Session

Session 2: Driving the LHC

8 Dec 2010, 09:00

Hilton, Evian

Description

Chair: Gianluigi Arduini; Scientific Secretary: Mirko Pojer

Presentation materials

Discussion Summary

Summary_Session2_Evian.docx

Summary_Session2_Evian.pdf

0. How to improve turn-around

S. Redaelli

08/12/2010, 09:00

Where did we lose time (injection, ramp, squeeze, etc.). What can we do to minimize that (in the LHC and injectors)? Critical review of the operational procedures Squeeze: what can be improved? shall we still consider the option of a combined ramp and (partial?) squeeze? What are the implications of that: setting-up time, controls, reliability, machine protection. Impact on collimation, feedbacks

1. Software and control issues

D. Jacquet

08/12/2010, 09:25

The software applications and fixed displays in the control room are the unique windows to the LHC, the interface used to give it orders, diagnose its state of health and control its behaviour. The better tools we have to communicate, the more efficient is the operation team to detect and cure problems, and also run the accelerator in an efficient way. Despite the impressive number of well...

33. Can we improve the magnetic model/cycle and its effects?

E. Todesco

08/12/2010, 09:50

We recall the precycling strategy defined for operation and we give an overview of how it has been applied in the 2010 run: in how many cases the previous physics run has been used as a precycle, in how many cases we precycled the magnets, and how we did it w.r.t. specifications. 2010 run was characterized in some periods by non-nominal conditions such as lower ramp rate (2 A/s) in the main...

2. What do we need to understand and optimize the LHC?

O. Bruning

08/12/2010, 10:15

Can we monitor all the parameters relevant for machine performance (e.g. in terms of luminosity)? What can help us in pin-pointing the source of “non-confomities” (e.g. is it in the LHC, is it in the injectors”) What is missing? Do we have the tools required for data analysis and performance analysis? Fill-to-fill comparison, comparison with expectations Can data mining and correlation...