1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Surface cleaning and chemical process analysis of high quantum efficiency magnisum photocathode

TUPM043
3 Jun 2025, 16:00
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC3.T02 Electron Sources Tuesday Poster Session

Speaker

Rong Xiang (Helmholtz-Zentrum Dresden-Rossendorf)

Description

Magnesium (Mg) has been demonstrated to be a safe, stable, and reliable photocathode for both normal-conducting and superconducting RF guns.
Pure magnesium, with its low work function of 3.6 eV, exhibits significant quantum efficiency (QE) improvement — by up to two orders of magnitude — following appropriate surface cleaning procedures. This study investigates the chemical processes occurring on the material's surface in its as-received state and after thermal and plasma cleaning. These findings provide critical insights into the mechanisms underlying QE enhancement on this metallic photocathode.

Region represented Europe
Paper preparation format Word

Author

Rong Xiang (Helmholtz-Zentrum Dresden-Rossendorf)

Co-authors

Andre Arnold (Helmholtz-Zentrum Dresden-Rossendorf) Anton Ryzhov (Helmholtz-Zentrum Dresden-Rossendorf) Jana Schaber (Helmholtz-Zentrum Dresden-Rossendorf) Jochen Teichert (Helmholtz-Zentrum Dresden-Rossendorf) Petr Murcek (Helmholtz-Zentrum Dresden-Rossendorf) Raffael Niemczyk (Helmholtz-Zentrum Dresden-Rossendorf) Stefan Gatzmaga (Helmholtz-Zentrum Dresden-Rossendorf)

Presentation materials

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