MPP Workshop 2019

Session

Session 4 - Injectors

8 May 2019, 14:00

Hexagonal (Chateau de Bossey)

Description

Chair persons: F. Tecker & V. Kain

62. Machine protection challenges in the SPS

Kevin Shing Bruce Li (CERN)

08/05/2019, 14:00

• Machine protection in the SPS overview – LHC extractions, SPS ring
• LS2 upgrades:
• SBDS, injection interlocking
• Absorbers + SMP
• WIC: HIL loop
• BI interlocking plus additional requirements for SMP
• Status and requirements for slow extraction
  Handling MDs and non-standard operation in the SPS
  UA9, COLDEX, crab cavities

63. Linac 4 - experience and open points

David Nisbet (CERN)

08/05/2019, 14:40

• Lessons learnt for MP  hole in vacuum pipe, diamond BLMs broken, stripping foil broken, other beam incidents …
• Report on LINAC4 review
• BIS configuration – check with PSB talk, as one common BIS architecture. New specification
• Experience with settings management
• Outstanding issues
• Source interlock (RF  HV).
• Use of timing to select beams. Interface to External Conditions and SIS

64. SIS, external conditions and timing system

Grzegorz Kruk (CERN)

08/05/2019, 15:40

New SPS GMT monitoring to be put in place in SPS after LS2
- External conditions – SIS – Timing
- What is in place for the different injectors
- Upgrade of EC foreseen for LS2, problems interfacing FGC
- Longer term plans for SIS and external conditions development. Should these two be merged in the long-term future (next to a hardware BIS)?

65. PS and machine protection

Klaus Hanke (CERN)

08/05/2019, 16:10

• Experience with protection
• Protection strategy mid and long-term
• External conditions & SIS
• External conditions upgrade LS2 by BE-ICS  check against talk Greg/Miguel below for overlap
• No safe beam flag in PSB and PS, manage interlocks per beam type / external conditions
• What about BIS in the long-term future? PS dump, connection to PSB extraction BIC
• PS SEM grids and...

66. Booster interlocking and operational scenarios

Bettina Mikulec (CERN)

08/05/2019, 16:40

• Booster interlocking
• Upgrade of switching magnet power supply BHZxxx which leads to dump
• External conditions, SIS, BIS and 4-ring flexibility
• Procedures for masking BIS and making changes to timing to get beam for <4 rings. Automate? Software, reminders?
• Fault diagnostic – BIS diagnostics by cycle. BIS GUI OP and history buffers.
• Operability?

67. Conclusions - wrap up

Daniel Wollmann (CERN)

08/05/2019, 17:10

61. SPS HW changes for LIU beams

Verena Kain (CERN)