International Review on the e-lens concept readiness for integration into the HL-LHC baseline

Session

Status of design

19 Oct 2017, 08:30

6/2-024 - BE Auditorium Meyrin (CERN)

1. Introduction and recapitulation from the last review (2016)

Oliver Bruning (CERN)

19/10/2017, 08:30

2. Q&A

19/10/2017, 08:40

3. Functional specifications and parameter requirements

Stefano Redaelli (CERN)

19/10/2017, 08:45

The present target specifications for the LHC electron lenses for enhanced beam collimation are reviewed. After a brief presentation of the basic working principle of hollow e-lenses, which illustrates how they will be used to improve the beam collimation through an active control of beam tails, the key parameters defined in the conceptual design report are presented. Uncertainties on these...

4. Q&A

19/10/2017, 09:10

5. Summary of reference design(s) [FNAL and RHIC designs] and CERN reference baseline overview

Diego Perini (CERN)

19/10/2017, 09:15

This presentation will describe the hardware of the Hollow Electron Lenses for HL-LHC.
In the first part the main design choices and the differences with respect to other existing HELs will be explained.
In the second part the most important components: magnetic system, cryostats, feeding systems, gun, collector, and support structures will be shortly described.

6. Q&A

19/10/2017, 09:40

7. Electron-lens experience at Tevatron and RHIC

Giulio Stancari (Fermilab)

19/10/2017, 09:45

The design and operational aspects of the Tevatron and RHIC electron lenses are reviewed, with comments on diagnostics, reliability, maintenance and infrastucture.

8. Q&A

19/10/2017, 10:10

9. Layout and integration boundary conditions in IR4

Maria Amparo Gonzalez De La Aleja Cabana (Universidad Politecnica de Madrid (ES))

19/10/2017, 10:30

This talk will provide a general overview of how the Hollow Electron lenses and its ancillaries will be integrated in the LHC tunnel, point 4. In particular the position of the HEL on the beam respect to the nearby components, the possible location of the control power and protection systems and the correlated connection will be discussed. The requirements for the HEL, coming from alignment of...

10. Q&A

19/10/2017, 10:55

11. Existing technical infrastructure boundaries (cryogenics)

Serge Claudet (CERN)

19/10/2017, 11:00

Presentation of LHC Cryogenics at P4, cooling interfaces available for users, timeline for any new project to be considered including HEL.

12. Q&A

19/10/2017, 11:10

13. Additional ancillaries for the operation of the HEL

Adriana Rossi (CERN)

19/10/2017, 11:15

This talk will describe the basic operations with the Hollow Electron Lens, and its ancillaries will be integrated in the LHC tunnel, point 4. In particular the electronics, power converters, interlocks.

14. Q&A

19/10/2017, 11:25

15. Proposed beam instrumentation for the hollow electron lens

Rhodri Jones (CERN)

19/10/2017, 11:30

This talk will focus on the beam instrumentation requirements for control of the hollow electron beam and its accurate alignment with the proton beam.
A set of proposed diagnostic systems to meet these requirements will be presented, taking as input previous experience from similar electron lenses at both FNAL and BNL. This includes beam position monitors, beam current monitors, a novel beam...

16. Q&A

19/10/2017, 11:55

17. Operational aspects and machine protection considerations (benign devices can be made transparent and turned off, ...)

Roderik Bruce (CERN)

19/10/2017, 12:00

18. Q&A

19/10/2017, 12:25