LHC Performance Workshop - Chamonix 2010

Session

Session 1 - Preconditions for Operating at 5 TeV in 2010

S01

25 Jan 2010, 08:30

Chamonix

Presentation materials

more information

AS_MZ_01-Discussion.doc

AS_MZ_01-Discussion.pdf

AS_MZ_01-Discussion.ps

paper

AS_MZ_01.doc

AS_MZ_01.ps

0. Scope and results of hardware commissioning to 3.5 TeV and lessons learnt

Matteo Solfaroli

25/01/2010, 08:30

After the incident of the 19th September the LHC has been initially re-commissioned to operate at 1.18TeV. Compared with the previous year, the 2009 commissioning campaign took much less time to prepare the machine for operation. This was mainly possible thanks to the reduced energy level and the increased working time. While the preparation of the machine for operation to 3.5 TeV will require...

1. Enhanced QPS – Commissioning and performance at 3.5TeV, outlook towards 5 TeV

Reiner Denz

25/01/2010, 08:50

During the shutdown of the LHC in 2009 the protection system for superconducting elements in the LHC QPS has been submitted to a substantial upgrade. The newly introduced layers of the QPS allow the monitoring and protection of the electrical interconnections between superconducting magnets with very high precision and extend the capability of the system to the timely detection of so-called...

2. Do the splices limit us to reach 5TeV. Plans for 2010 run

Michael Koratzinos

25/01/2010, 09:15

The talk will start by reviewing the landscape: the results of the warm copper stabilizer measurements, the results of the splice measurements at cold and the allowed space for these variables as a function of LHC energy. It emerges that the limiting factor for operating safely at higher energies is our knowledge of copper stabilizer resistances. The available methods at our disposal for...

3. Lessons learnt from beam commissioning and early beam operation of the Beam Loss Monitors (+ outlook to 5TeV)

Barbara Holzer

25/01/2010, 09:40

Results from the 2008 and 2009 operation of the LHC BLM system are presented with respect to the reliability and availability of the system. Have the design goals been attained? Where are known limitations? Can they be overcome? If so, how and by when? Among others, the precision of the beam abort threshold levels with respect to the magnet quench levels will be discussed. Threshold levels at...

5. How to safely reach higher energies and intensities? Settings and commissioning of Machine Protection Systems for 5TeV operation (BIC, SMP, LBDS, BPM, BCT, PIC …)

Jorg Wenninger

25/01/2010, 10:35

The LHC Machine Protection System has been commissioned in November and December 2009 for low intensity and low energy beam operation. During this period interlocks were activated step by step and masking of channels was used regularly to improve the commissioning efficiency. As intensity and energy are increased this flexibility will be lost as the machine has to be protected at all times. It...

6. What else needs to be done to reach 5 TeV and beyond? Consolidation and commissioning of essential magnet powering systems

Walter Venturini

25/01/2010, 11:00

In this contribution the engineering changes introduced after the September 19 incident will be revisited, in the light of a 5 TeV physics run, and beyond. Some of these measures needs consideration as they were adapted, or commissioned for the initial low energy run. Also, the non conformities that need to be closed in order to run at 5 TeV will be discussed along with an estimate of the...

58. HWC 2010 and beyond – R.Schmidt - 15 min

Rudiger Schmidt

25/01/2010, 11:25

For the years to come, extensive re-commissioning of the superconducting circuits is expected. In order to reduce the time and resources required for the re-commissioning, ideas how to improve the efficiency are discussed. Some of the steps during the re-commissioning can be optimised, reducing the number of interfaces between different teams. The different software tools can be improved and...