BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
CALSCALE:GREGORIAN
BEGIN:VEVENT
DTEND;TZID=Europe/Zurich:20220222T170000
UID:757079c96e419ccee0aab5c01877b5cb
DTSTAMP:1778072191
LOCATION:ONLINE VIA ZOOM
ORGANIZER:Alumni Community of the FUSION-EP Master Program
DESCRIPTION:Nearly 40 optical diagnostic systems in ITER are equipped with metallic first mirrors (FMs) with the objective of directing the light from the fusion plasma towards the diagnostics through an optical labyrinth in order to prevent neutron leakage. However, the FMs being the initial elements in the optical diagnostics, would be subject to constant erosion from charge exchange neutrals as well as deposition of the first wall materials: beryllium (Be), tungsten (W) and their oxides, that would significantly degrade their optical properties. The FMs would hence require regular cleaning to restore their optical properties, currently foreseen to be achieved by an in-situ capacitively coupled radio-frequency (CCRF) plasma cleaning technique. In this contribution we discuss the plasma cleaning of such FMs in ITER relevant conditions.

URL;VALUE=URI:https://fusionep-talks.egyplasma.com/calender/event.php?variableName=757079c96e419ccee0aab5c01877b5cb
SUMMARY:Plasma cleaning of diagnostic mirrors in ITER
DTSTART;TZID=Europe/Zurich:20220222T160000
END:VEVENT
END:VCALENDAR