Internal review on ABP-CEI bench impedance measurements

Wednesday 24 Mar 2021, 13:30 → 16:45 Europe/Zurich

Zoom (CERN)

13:30 → 13:35 Introduction and goals of the review

Speaker: Giovanni Rumolo (CERN)

13:35 → 13:50 General goal of measurements and simulations [10'+5']

Why do we do them and what information do we get from them:

• Validation of equipment.
• Validation of simulation models for use in beam dynamics simulations

Speaker: Benoit Salvant (CERN)

internal review - why impedance measurements v3.pdf

internal review - why impedance measurements v3.pptx

13:50 → 14:35 Which measurements are available now and used? [30'+15']

• Wire measurements
• Two-wire measurements
• Resonant wire measurements
• Probe measurements
• Surface measurements: 4point method+ cavity+ coil
• Material characterization
• [Bead-pull: not used by us]
• Recent improvements to the tooling
• Scattering parameter measurements of cable terminations
• Direct scattering parameter measurements (from temperature probes, BPM, or any input/output from the device)
• Simulations (wakefield, eigenmode and simulations of the RF measurements with wire and probes in FD and TD)

Speaker: Nicolo Biancacci (CERN)

CEI_bench_impedance_measurements_review_24032021_NB.pdf

CEI_bench_impedance_measurements_review_24032021_NB.pptx

14:35 → 14:55 Specific example of collimator measurements [10'+10']

Speaker: Adnan Kurtulus (ETH Zurich (CH))

CEI-Collimator_measurements 2.pdf

CEI-Collimator_measurements 2.pptx

14:55 → 15:15 Specific example of TDIS measurements [10'+10']

Speaker: Sebastien Joly (CERN)

Review_bench_impedance_measurements_SJ.pdf

Review_bench_impedance_measurements_SJ.pptx

15:15 → 16:00 What is next? [30'+15']

• Limits and range of validity of existing methods
• Possible new methods
• Material measurements

Speaker: Carlo Zannini (CERN)

Impedance measurementsv2.pdf

Impedance measurementsv2.pptx

16:00 → 16:45 Discussion [45']