ACADEMIC COLLABORATION ON VACUUM SCIENCE

JOHN COLLIGON

SURFACE COATINGS AND CHARACTERISATION GROUPDALTON RESEARCH INSTITUTE

MANCHESTER METROPOLITAN UNIVERSITY

J.COLLIGON@MMU.AC.UK

I ACKNOWLEDGE SUPPORT OF

RON REID

JOE HERBERT

OLEG MALYSHEV

KEITH MIDDLEMAN

REZA VALIZADEH

ADRIAN HANNAH

SUNIL PATEL

VLAD VISHNYAKOV

MIKE POOLE

and MANY OTHERS

ASTeC has an excellent track record in vacuum science and is well-known world-wide.

The Vacuum Science laboratory is an ideal centre for fundamental studies of vacuum-related topics including materials and thin film coatings

It also provides an excellent training base for placement students from Liverpool (Piotr Czekala), Loughborough (Adam Smith and Christian Naran) and Bath (Rebecca Jones)

Also PhD and visiting students (Narong)

With UK research funding now so limited one wonders if Daresbury could become a centre for PhD training?

THE FIRST STEP IS TO MATCH STFC AND ACADEMIC

REQUIREMENTS AND EXPERTISE

IN MY OWN INTERACTION THIS WENT ROUGHLY AS FOLLOWS

JSC BACKGROUND

PhD on Sorption of gases with Professor Harry Leck in Liverpool 1962

Momentum accommodation of ions to simulate satellite drag at RAE Farnborough

Low energy sputtering to find damage thresholdRAE and Salford

Secondary Ion and Secondary Neutral Mass Spectrometry for surface analysis

Salford

Ion-assisted coatingsSalford and MMU

Coatings and Thin Films

NEEDS OF VACUUM SCIENCE DIVISION ASTeC

General vacuum support for accelerator beam lines

Requirement of better vacuum and hence interest in Non-Evaporable Getters which are:

Coatings and Thin Films

CHALLENGES

Most commercial coatings are line-of sight; ASTeC needs coatings inside tubes

Benvenuti in CERN has a method to make NEGS but can we improve this?

Can the activation temperature be reduced?

Can we control film microstructure?

What are effects of electron bombardment which occurs in a cyclotron?

VALIZADEH et alJVSTA 28(5) (2010) 1404

Twisted wire Alloy wire

CO pumping capacity as a function of activation temperature

Pressure 10-2 mbar Pressure 2 x 10-3 mbar

Ti-Zr-V films on Si at 70 deg C.

Dark field images of TiN films grown at 473K

Malyshev, O.B., Middleman, K, Colligon, J.S. and Valizadeh, R. Activation and measurement of non-evaporable getter filmsJ.Vac.Sci Technol. A27(2) (2009) 321-327 Malyshev, O.B., Valizadeh, R, Colligon, J.S, Hannah, A.J, Middleman, K, Patel, S. and Vishnyakov, V.I.Influence of deposition pressure and pulsed dc sputtering on pumping properties of Ti-V-Zr nonevaporable getter filmsJ.Vac.Sci Technol. A 27(3) (2009) 521-530  Valizadeh, R, Malyshev, O.B., Colligon, J.S., Hannah, A.H. and Vishnyakov, V.V.Comparison of Ti-Zr-V nonevaporable getter films deposited using alloy or twisted wire sputter-targetsJ.Vac.Sci.Technol. A28 (5) (2010) 1404 Malyshev, O.B., Smith, A.P., Valizadeh, R. and Hannah, A.Electron stimulated desorption from bare and non-evaporable getter-coated stainless steelsJ.Vac.Sci Technol. A 28(5) (2010) 1215-1225

PUBLICATIONS FROM THE COLLABORATION

PLUS SEVERAL PAPERS PRESENTED AT CONFERENCES

FROM THE MMU VIEWPOINT THE COLLABORATION HAS BEEN VERY WELCOME AND SUCCESSFUL

Interesting work

Publications

New contacts

Appointment of Dr Valizadeh by STFC

Hopefully a new programme of study with Dr Militsyn

THANK YOU ASTeC

Initial CO sticking probability as a function of activation temperature

MAG D

MAG C

MAG BMAG A

ION SOURCE

SUBSTRATES