Documents & Links

Selected collimation topics

Recent review of upgrade plans for the LHC

S. Redaelli LHC collimation upgrade and MP roadmap LHC performance workshop - Chamonix 2014 slides
S. Redaelli et al. Collimation upgrades for HL-LHC LHC performance workshop - Chamonix 2014 paper

Advanced materials for LHC collimation upgrade

A. Bertarelli Novel materials for collimators at LHC and its upgrades High Brightness 2014 workshop - November 10-14, East Lansing, MI slidespaper

Hollow e-lens for LHC collimation

G. Stancari et al. Conceptual design of hollow electron lenses for beam halo control in the Large Hadron Collider CERN-ACC-2014 pdf
G. Stancari et al. Hollow Electron Lens Simulation for the SPS IPAC 2013 pdf

Collimaton tests at CERN HiRadMat facility

M. Cauchi et al. High energy beam impact tests on a LHC tertiary collimator at the CERN high-radiation to materials facility Phys. Rev. STAB - 2014 pdf
A. Bertarelli et al. An Experiment to Test Advanced Materials Impacted by Intense Proton Pulses at CERN HiRadMat Facility Nuclear Instruments and Methods, sect. B - 2013 link

Everything you need to know about tracking studies with collimation

R. Bruce et al. Simulations and measurements of beam loss patterns at the CERN LHC Phys. Rev. STAB - 2014 link

Beam halo measurements at the LHC

G. Valentino et al. Beam diffusion measurements using collimator scans in the LHC Phys. Rev. STAB - 2013 link

Crystal collimation at the LHC

Channelling 2014 workshop - October 2014, 5-10, Capri (Italy)
S. Redaelli Goals and Plans for the Crystal Collimation Test at the Large Hadron Collider pdf

DS collimation anf 11T dipoles for HL-LHC

51stColUSM Meeting (30/01/2015) indico page minutes

A. Lechner Power deposition in DS magnets due to ion collision debris (BFPP1) in IR1/5 pdf
E. Skordis Updated power deposition simulations for DS collimators in IR7 (proton operation) pdf pptx
F. Savary Outcome of the 11T review pdf pptx
D. Duarte Ramos Status of integration design pdf pptx
L. Gentini Status of TCLD design and implications of shorter jaws pdf pptx

HL-LHC

Draft Preliminary Design Report (PDF) - Collimation Chapter - 05-09-2014

Collimation Chapter of the HL PDRpdf docx

HiLumi WP5 deliverable documents

Delivered & validated.

Deliverable D5.1
Deliverable D5.2
Deliverable D5.3

Description of Work Packages, Tasks and Milestones:
Annex 1 "Description of Work"

Summary of HiLumi optics parameters
parameter table

Draft Conceptual Functional Specifications for the HL-LHC collimation upgrade

We collect here the working drafts of the functional specification documents for the collimation upgrades within HL-LHC.

Dispersion suppressor collimators: TCLD collimators around IR2 DOCX PDF official EDMS link (Doc. 1366517)
Dispersion suppressor collimators: TCLD collimators around IR7 DOCX PDF official EDMS link (Doc. 1366519)
Dispersion suppressor collimators: TCLD collimators around IR1/5 DOCX PDF official EDMS link (Doc. 1366520)
Improved secondary collimators in cleaning insertions: TCSPM collimators in IR3/7 DOCX PDF official EDMS link (Doc. 1393878)
Improved tertiary collimators in experiment insertions: TCTPM collimators in IR1/2/5/8 DOCX PDF official EDMS link (Doc. 1393893)
Physics debris collimation: TCL collimators in IR1/5 DOCX PDF official EDMS link (Doc. 1366522)
Physics debris collimation: TCLM masks in IR1/5 DOCX PDF official EDMS link (Doc. 1393868)
Hollow electron lenses for active halo cleaning DOCX PDF official EDMS link (Doc. 1366525)
Crystal collimation MD at the LHC DOCX PDF official EDMS link (Doc. 1366524)
LHC primary collimators in IR3 and IR7 (TCP, TCPP) DOCX PDF official EDMS link (Doc. xxx)
LHC secondary collimators in IR3 and IR7 (TCSG) DOCX PDF official EDMS link (Doc. xxx)
LHC shower absorber collimators in IR3 and IR7 (TCLA) DOCX PDF official EDMS link (Doc. xxx)
LHC passive absorbers collimators in IR3 and IR7 (TCAP) DOCX PDF official EDMS link (Doc. xxx)
LHC secondary collimators with pick-up buttons in IR6 (TCSP) DOCX PDF official EDMS link (Doc. xxx)
LHC terticary collimators with pickup buttons in the experimental regions (TCTP) DOCX PDF official EDMS link (Doc. xxx)

Remarks/comments:

- Crystal collimation is for the moment not in the upgrade baseline. The installation carried out in LS1 for MD studies is not part of these conceptual specifications.

- Other collimator activities to be addressed as system consolidation are not discussed in these documents. Only the upgrades involving new designs is addressed.

- Collimator that might have to be changes in order to withstand the failure scenarios with updated HL/LIU beam parameters are also not discussed for here (e.g., new primary and secondary collimators to be changed in case the 288 bunch loss scenario at injection is no more safe).

SixTrack & Collimation

Everything you need to know about SixTrack and collimation, published in PhysRevSTAB

R. Bruce et al. Simulations and measurements of beam loss patterns at the CERN LHC link

 

Talks and presentations

Articles and presentations in conferences and workshops, in addition to the usual ColUS Meetings

3rd Joint HiLumi LHC-LARP Annual Meeting, Nov. 2013: Daresbury (UK)

Time table and most presentations available here .

S. Redaelli Summary of LHC Collimation session pdf ppt

LHC Collimation Review, May 2013, CERN.

S. Redaelli et al. Introduction to dispersion suppressor collimation pdf pptx
G. Steele et al. DS Heat Load Scenarios in Collision Points and Cleaning Insertions pdf pptx
E. Skordi et al. FLUKA Energy deposition simulations for quench tests pdf pptx

International Particle Accelerator Conference, May 2013, Shanghai (China): IPAC'13

A. Bertarelli et al. First Results of an Experiment on Advanced Collimator Materials at CERN HiRadMat Facility pdf
M. Cauchi et al. High Energy Beam Impact Tests on a LHC Tertiary Collimator at CERN HiRadMat Facility pdf
A. Marsili et al. Simulations of collimation cleaning performance with HL-LHC optics pdf
E. Quaranta et al. SixTrack Simulation of Off-Momentum Cleaning in LHC pdf

2nd Joint HiLumi LHC-LARP Annual Meeting, Nov. 2012: Frascati (Italy)

R. Bruce et al. Collimation after LS1: cleaning and beta* reach pdf pptx
L. S. Esposito et al. Energy deposition studies for TCLs in IR1/5 pdf
A. Marsili et al. Simulations of HL halo loss and IR losses pdf
A. Marsili et al. First collimation results with the baseline 15 cm ATS optics pdf
S. Redaelli et al. LHC Collimation Status and Plans pdf, pptx

Links

HL-LHC

HiLumi Website and work packages:

Accelerator Physics WP2
Collimation WP5
Energy deposition WP10

MERLIN

Another particle tracking code

ICAP 2012 Talk Paper