Tentative Topics

Topics that have been decided upon and needs to be scheduled:

• …
• …

Preselected Topics

Topics that have been pre-selected by steering group:

• …
• …

System Analysis Topics to be covered

• Facility & Interface Analysis
  • Procedures: HWC, HWC-'Machine Check Out', BC-I, BC-II, BC-III
  • Beam parameters, FAIR performance model and optimisation, Machine & Beam Modes
• Beam Instrumentation & Diagnostics – System Integration
  • Intensity (DCCTs, FBCT), trajectory & orbit (BPMs), Q/Q', optics (LOCO & phase-advance), longitudinal & transverse emittance (WCM, screens, IPM, etc.), beam loss (BLMs), Δp/p, long. bunch shape, abort gap monitoring, long. Tomography, aperture model, ...
• Accelerator Hardware – System Integration
  • Power converter, magnets, RF, injection/extraction kicker, tune kicker/AC-dipole, beam dump, collimation/absorbers, cryogenics, vacuum, radiation monitoring, magnet model, k-modulation, ...
• Control System
  • Archiving, analog signal acquisition, test-beds, timing, bunch-to-bucket transfer, cyber security & role-based-access, middleware, RT & Feedbacks, daemons, semi-automated procedures, …
  • dry-runs
• Components
  • Post-mortem, safe-beam settings management, machine protection ↔ interlocks, beam quality checks
• Applications
  • Sequencer, GUIs, fixed-displays

Suitable Topics that can be paired

• Beam-Instrumentation (focus on HW)
  • Overview and strategy (M. Schwickert → scheduled for 2nd meeting)
    • MP relevance, OP robustness/reliability, nice-to-have
  • Group I: Intensity monitoring across transfer lines & rings
  • Group II: Orbit/Trajectory & Q/Q'
  • Group III: Beam Loss & Vacuum
  • Group IV: longitudinal diagnostics (bunch shape/length, splitting/merging, abort gap monitoring, tomography, …)
  • Group V: emittance diagnostics and preservation (after optics)
• Beam Control (focus on use-case):
  • Trajectory and Orbit Control (?)
  • Tune and Chromaticity Diagnostics & Control (?)
  • RF capture and (later) RF gymnastics
  • Transfer line & ring optics measurement & control (?)
  • Longitudinal emittance measurement
  • Transverse emittance measurement
  • Transverse and longitudinal feedbacks (RF: ???)

Other Topics to be Sorted:

Critical systems that need to be defined as soon as convenient

• Data archiving paradigm, requirements & specs ↔ post-mortem (CO)
  • Storage by cycle, as 'function of time' or both (e.g. snapshots of accelerator states after injection, start ramp and before extraction)
  • Data extraction: online tool to make simple 1st-order correlation, other extraction options (C/C++, Java, Matlab, Mathematica, … ?)
  • How to ensure complete coverage: tree structure to be defined globally but individual variables (leafs) need to be defined by system experts (↔ human readable naming convention)
• Remote acquisition of analog signals (BI/CO: kHz ↔ MHz ↔ GHz range, needs to be sorted out by Q1-2017)
  • “online scopes” management framework (fixed signals vs. ad-hoc measurements)
  • Mandatory analog input protection: low-noise amplifiers needed for ions but may be destroyed by high-intensity proton signals ↔ passive protection + active settings driven and feedback if things go unexpected
• Test-beds for each and every accelerator equipment
  • Equipment need to provide (simulated, stored, etc) data with the same interface as the operational (future) device in the machine
  • Mandatory for quality assurance and long-term maintenance
  • provides data for high level simulation software (machine simulator)
    
  • Allows development of tools prior to/without the availability of the underlying equipment
    • Important for pre-commissioning and during operation (for safety reasons)
• LSA providing test function for system acceptance tests (not beam-hierarchy driven)
• LSA providing accelerator simulation feature for operator training and software tests (machine simulator)
• LSA howto operate the UNILAC using LSA
  
• Context-based monitoring of
  • electrical power network & power converter infrastructure
  • Cryogenics & vacuum
  • other facilities: water, personnel safety radiation monitors, ...
• Controls and accelerator infrastructure monitoring
  • controls and timing network (latencies, instantaneous/avg. bandwidth load)
  • FE CPU/temperature loads,
• Tools for check-out test analysis (passed, in-progress, fault)
• Tools for availability analysis → interface with logbook?
• Going into and out of machine access (electrical lock-out, soft-power-down of equipment, etc.)
  
• Bunch-to-bucket transfer paradigm – proof of concept? (use-case, specification, …)
• Video/image distribution and analysis (↔ IPMs, transfer line screens)
  • bandwidth, latency control, post-processing infrastructure, …

Crucial, missing tools:

• Performance indicators:
  • Overall transmission performance (short-, medium- and long-term)
  • Total up-time, beam-delivered-on-target
• Beam parameter control
  • (Semi-)Automated Transfer-line Steering – priority for SIS18 restart
  • Closed-Orbit Control (circulating beam) – priority for SIS18 restart
  • Q/Q' and Coupling Control
  • TL & ring optics measurements and control
• Transverse and Longitudinal emittance monitoring?
  • emittance preservation across UNILAC → SIS18 → SIS100
  • ...
    

-- RalphSteinhagen - 12 May 2015