Including project re-scoping, collaborations and key milestones for the HL-LHC
General overview of the project covering SPS and HL-LHC, role and scope of each collaboration, planning, strategy and key milestones achieved and future prospects.
Management of collaborations and integration into the CERN planning and documentation
Engineering specifications overview for cavities & cryomodules and strategy to manufacture the cryomodules.
Experience and key lessons learned from SPS-CM
Open issues, spare policy, maintenance and repairability including radiation aspects for HL-LHC
HPRF system architecture in SPS and Lessons learned (RF power, conditioning, linearity, availability)
RF power requirements and interfaces to other WPs
Options for HL-LHC and ongoing studies on SSPA including SM18/SPS testing
Planning and procurement strategy including potential collaborations
Experience from the SPS installation & lessons learned
Interfaces for HL-LHC-WP4 and present status
Short history of the US-LARP contributions to HL-LHC
Issues with conformity
Cavity performance overview (DQW/RFD) - 2015-2017 Cavity+HOMs results & lessons learned (DQW/RFD) - 2017-19
Mitigations and future prospects of the US-LARP cavities including testing at Uppsala and EP at KEK
Status of documentation
Recap of the SPS cavity and cryomodule fabrication, assembly, testing and lessons learned
Variances to RFD "LHC type" and future prospects
Vacuum layout in SPS, installation and lessons learned
Aspects related to carbon coating of the bypass chambers
Experience with beam and insulation vacuum
Outlook for operation in 2021 and beyond
Challenges for SPS installation and commissioning and related schedule constraints
Experience and learning curve for SPS module, results and outlook for 2021 operations
Lessons learned and relevance to HL-LHC
Frequency tuning requirements, concept and results and lessons learned from SPS.
Relevance to HL-LHC and improvements adopted
Open issues for cavity tuning to be addressed
HOM damping requirements and overview of the damping schemes
Measurements on the bare and dressed SPS cavities including distribution of the HOM power between couplers
Measurements with beam and comparison to simulations
Improvements for DQW for HL-LHC
LLRF concept and preparation towards the SPS tests
Implementation in the SPS and commissioning, experience with beam, main issues and foreseen improvements (SEL, firmware, software, automatization of functions etc..)
Amplitude and phase stability, RF noise measurements and future improvements
Future platform for HL-LHC and outlook for 2021 SPS operation
Possible failure scenarios and observations from the SPS tests
Interlocks and future improvements including outlook for 2021 SPS tests
Manufacturing strategy for the RFD cavity, copper trials and present status of the Nb cavities
Issues encountered during the manufacturing and impact on schedule
Technology transfer to partner collaborations and industry
Industrial production of the pre-series DQW cavities with RI
Present status including the re-scoping and changes implemented during the first phase of the contract
Status of the documentation, qualifications, readiness for fabrication and CERN acceptance tests
Impact on the schedule
US-AUP strategy for RFD-DC including scope, RF geometry, treatment, testing planning for prototypes and series cavities
Compliance with engineering specifications and safety requirements including fabrication, documentation, qualification status, issues
Reliability of the existing setups and acceptance criteria agreements with CERN
Experience industrial partner and next key milestones
FPCs, HOM couplers and field antenna design and prototyping
Issues encountered during the SPS phase and mitigation measures including transport considerations
Strategy for RFD and DQW (including RF feedthroughs) both at CERN and Canada/UK
Status of fabrication/doc/qualification/documentation
RFD-HOM couplers and field antenna design and USLARP prototypes
Issues encountered with prototypes and mitigiation measures
Strategy for future prototypes and series (including feedthroughs)
Status of fabrication/doc/qualification/documentation
Recap of the SPS-DQW cryomodule design and the updates towards the HL-LHC modules
Conceptual design and key interfaces (RF, vacuum, cryo, alignment etc..)
Open items to be addressed
Scope of the UK1 and UK2 projects towards the HL-LHC WP4
Experience and participation in the SPS program and lessons learned
Planning of the RFD-prototype and DQW series
Main interfaces and responsibility sharing between UK and CERN and compliance with engineering specifications, safety regulations and acceptance criteria
Scope of the Canadian contribution to HL-LHC-WP4 including fabrication, assembly and testing
Planning of the RFD cryomodules and integration into WP4 master planning
Main interfaces and responsibility sharing between Canada and CERN, acceptance criteria and compliance with engineering specifications.
Boundary conditions and specifications for transport
Key aspects to be addressed specially (Couplers, bellows etc..)
Experience with transport inside CERN and measurements
Overview of the cavity and cryomodule reception at CERN and testing and lessons learned from SPS-CCs
Detailed planning for the RFD-proto, DQW/RFD series in SM18
Readiness of the testing infrastructure for vertical testing of cavities and bunker tests of cryomodules
Preparations ongoing towards the series testing and main bottlenecks
Design update of the integration of CCs in HL-LHC including the displacement and interfaces related to RF, cryogenics, vacuum, alignment and other services
Optimization of the crab zone and cores for future flexibility including swap of H/V if needed
CV, infrastructure, cabling and other open items
Scope of the WP13 contribution to WP4
HL-LHC CC vacuum layout including the counter-rotating beam and all vacuum equipment related to CCs
Main interfaces and responsibility sharing including collaborations from Canada, UK and US-AUP
Cryogenics layout for HL-LHC CCs and improvements from SPS experience
Integration and maintainence of the cryogenic insfrastructure for HL-LHC CCs
Commissioning strategy and cool-down/warmup and operational constraints
Sectorization of the crab cavities w.r.t the IR region
Cavity alignment specifications and concept demonstration in the SPS
Improvement foreseen for HL-LHC and future testing in the SPS
Aspects related to remote alignment cryomodules and periodic alignment of the cavities inside the cryomodules
RF conditioning experience from SPS and estimates for LHC including 8 modules at P1/P5
Compatibility with HW commissioning of magnets
Memory of conditioning and strategy during technical shutdowns
No RF zone ?
Frequency tuning requirements, concept and results and lessons learned from SPS.
Relevance to HL-LHC and improvements adopted
Open issues for cavity tuning to be addressed
First crabbing with proton beam, energy ramp, intensity ramp-up, emittance growth, impedance measurements etc..
Challenges during beam commissioning and mitigations
Outlook for 2021
