ISOLDE Workshop and Users meeting 2014 "50th Anniversary Edition"

Study on Diagnostic System for Quality Control of the HIE-ISOLDE Cavities.

Not scheduled

20m

503/1-001 - Council Chamber (CERN)

Poster

Speaker

Akira Miyazaki (CERN)

Description

I will present on development of a diagnostic system for the HIE-ISOLDE accelerating cavity. The HIE-ISOLDE cavity is a superconducting quater-wave resonator made of a copper substrate on which a niobium film of a few micron is sputtered. Five cavities have been constructed for the first cryomodule by last November; however their performance is not always as good as a nominal value (Q-value of 5x10^8, acceleration field of 6 MV/m). A diagnostic system is required to study the cavity during RF measurement, localizing defects or seeing any other phenomena. The system will be constructed with temperature sensors and magnetic flux sensors. The effect of thermoelectric current will be also studied with the same system. Basic ideas and current status will be shown.