|
Task description
|
Introduction by …
|
Treated in WG-Session #
|
|
Cavity design
Introduction
|
Frank Gerigk
|
1
|
|
Make recommendation on geometrical beta based on beam dynamics issues, in view of the impact on power dissipation, max. gradient, and required instrumentation
|
|
|
|
Optimize cavity geometry w.r.t. peak fields, multipactor, robustness against Lorentz-force detuning, tunability, HOM spectra, cross-talk between cavities, …
|
|
|
|
HOM coupler
Introduction
|
Joachim Tuckmantel/Hans-Walter Glock
|
1
|
|
Acquire results on HOM impedances, beam instability studies, and interaction between cavities via HOM propagation
|
|
|
|
Define strategy on HOM coupler design, prototyping and testing
|
|
|
|
Design HOM coupler (antenna vs. beam tube absorber), and cooling layout
|
|
|
|
Perform multipactor studies
|
|
|
|
Identify manufacture and conditioning capacities
|
|
|
|
Identify required equipment for HOM coupler tests (do we need room temperature model cavity?)
|
|
|
|
Manufacturing of cavities
Introduction
|
NN
|
2
|
|
Identify potential Labs with manufacturing competence (in house or with industry)
|
|
|
|
Identify potential commercial manufacturers
|
|
|
|
Agree on manufacturing and processing sequence
|
|
|
|
Identify required equipment (e.g. field flatness, frequency tuning) and what equipment is missing
|
|
|
|
Processing of cavity to obtain design performance
Introduction
|
Sergio Calatroni
|
2
|
|
Define strategy to reach full performance (25 MV/m for b = 1 cavities) for a fully equipped prototype cryomodule
|
|
|
|
Identify required equipment (e.g. electro-polishing, HPWR) and what is missing
|
|
|
|
RF tests of individual cavities
Introduction
|
Pierre Maesen
|
2
|
|
Identify need of re-processing and re-testing, the equipment required and what is missing
|
|
|
|
Diagnosis
Introduction
|
NN
|
2
|
|
Define required equipment (on-line: Temperature mapping and other diagnostics methods in super-fluid helium) and what is missing
|
|
|
|
Define required equipment (off-line: Optical inspection system) and what is missing
|
|
|
|
Assembly of and test of fully equipped cryomodule
Introduction
|
Pierre Maesen
|
3
|
|
Identify required equipment, monitoring devices and what is missing
|
|
|
|
Do we need to simulate the slope?
|
|
|
|
High power RF coupler
Introduction
|
Guillaume Devanz/ Eric Montesinos
|
3
|
|
Define the conceptual design, the layout of cooling (including thermal loads) and diagnostical tools, choice of materials (waveguide, window)
|
|
|
|
Perform multipactor studies, assess methods of multipactor suppression and elaborate coating techniques
|
|
|
|
Measure secondary emission coefficient (SEC) of materials involved
|
|
|
|
Identify manufacture and conditioning facilities
|
|
|
|
Identify required equipment for coating and conditioning
|
|
|
|
Frequency tuner
Introduction
|
Guillaume Devanz
|
3
|
|
Perform by computer simulation Lorentz-force detuning studies of cavity design and confirm by measurement
|
|
|
|
Develop and test slow tuner; integrate the design into that of the cryomodule
|
|
|
|
Develop and test fast tuner; integrate the design into that of the cryomodule
|
|
|
|
Develop scenarios for failing cavities (detuning)
|
|
|
|
Magnetic shielding
Introduction
|
NN
|
3
|
|
Design by computer simulation or analytically the magnetic shielding; manufacture it
|
|
|
Event calendar file
