LIU SPS SCRAPING SYSTEM
TECHNICAL DESIGN REPORT
Version: 01
Last Modified: 28 January 2013
Prepared by:
O. Mete (TE-ABT-BTP)
Checked by:
O. Aberle (EN-STI-TCD)
W. Bartmann (TE-ABT-BTP)
H. Bartosik (BE-ABP-LIS)
J. Bauche (TE-MSC-MNC)
F. Cerutti (EN-STI-EET)
K. Cornelis (BE-OP-SPS)
L. Drøsdal (BE-OP-LHC)
F. Galeazzi (EN-MEF-INT)
G. Le Godec (TE-EPC-MPC)
L. Jensen (BE-BI-SW)
V. Kain (BE-OP-LHC)
R. Losito (EN-STI)
F. Maciariello (EN-STI-TCD)
A. Mereghetti (EN-STI-EET)
Y. Papaphilippou (BE-ABP-LIS)
H. Vincke (DGS-RP-AS)
J. Wenninger (BE-OP-LHC)
Approved by:
B. Goddard (TE-ABT-BTP)
M. Meddahi (TE-ABT-BTP)
1. Executive Summary
2. Motivation
2.1. Beam Loss Induced Magnet Quench in the LHC
2.2. Tail Formation and Beam Cleaning in the SPS
2.3. Beam Cleaning in the Frame of the LHC Injectors Upgrade (LIU) Project
3. Concept of Beam Scraping with a Fixed Mask
4. Review of Possible Scraping Locations in the SPS
5. New LIU-SPS Scraping System
5.1. Layout
5.2. System Integration
5.3. Orbit and Aperture Studies
5.4. New Vertical Bumper Design
5.5. Power Converters
5.6. Operational Modes: Cleaning, Diagnostics, Intensity Reduction
5.7. Failure Cases and Machine Protection Requirements
6. Material Studies for the Scraper Block
6.1. Tracking and Energy Deposition Studies
6.2. Thermal and Structural Specifications
7. Dose Rates and Radiation Protection
7.1. Present levels
7.2. Extrapolated Scenario for the LIU Beam
8. Experimental demonstration of the concept: Results of the
Dedicated SPS MDs
9. Conclusions
10. Bibliography
11. Appendix: Different scraping concepts
11.1.
11.2.
Scraping with a crystal
Scraping with a hollow e- beam
https://edms.cern.ch/document/1277725/1
1. Executive Summary (O. Mete)
2. Motivation
2.1. Beam Loss Induced Magnet Quench in the LHC
2.2. Tail Formation and Beam Cleaning in the SPS
2.3. Beam Cleaning in the Frame of the LHC Injectors Upgrade (LIU) Project
3. Concept of Beam Scraping with a Fixed Mask
4. Review of Possible Scraping Locations in the SPS
5. New LIU-SPS Scraping System
5.1. Layout
5.2. System Integration
5.3. Orbit and Aperture Studies
5.4. New Vertical Bumper Design (J. Bauche)
5.5. Power Converters (G. Le Godec)
5.6. Operational Modes: Cleaning, Diagnostics, Intensity Reduction
(L. Drosdal, K. Cornelis, O. Mete)
5.7. Failure Cases and Machine Protection Requirements
6. Material Studies for the Scraper Block
6.1. Tracking and Energy Deposition Studies (A. Mereghetti)
6.2. Thermal and Structural Specifications (F. Maciariello)
7. Dose Rates and Radiation Protection (H. Vincke)
7.1. Present levels
7.2. Extrapolated Scenario for the LIU Beam
8. Experimental demonstration of the concept: Results of the
Dedicated SPS MDs
9. Conclusions (O. Mete)
10. Bibliography
11. Appendix: Different scraping concepts
11.1.
11.2.
Scraping with a crystal (S. Montesano)
Scraping with a hollow e- beam (S. Redaelli)
Completed sections are highlighted.
Deadline for contributions: Wednesday, 17 April.