Klaus Föhl Home Page

Dr. Klaus Föhl

Klaus Foehl
Department of Physics and Astronomy
University of Edinburgh

James Clerk Maxwell Building
The King's Buildings
Mayfield Road
Edinburgh EH9 3JZ
United Kingdom

Tel: +44 131 650 5256
Fax: +44 131 650 7165
e-mail: kf@ph.ed.ac.uk


curriculum vitae (as of june 1999) and publication list

coloured clouds on 30/11/1999

research interests

personal interests


Research Interests:

Antiprotons - my involvement in PANDA

I realise that I should be writing more about Edinburgh and PANDA, an activity I am very much involved in since several years. PANDA is an exciting experiment to be built, and it will take lots of effort and competence to make it the detector we need, to look into the new physics we are interested in.

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In spring 1997 I have joined the Nuclear Physics A group here at the Department of Physics of the University of Edinburgh.


Electromagnetic Interaction of Photons and Electrons with Nuclei

A number of people in our group work in the field of photonuclear reactions. As our experiments take place at several accelerator laboratories, this means we have to travel abroad quite a bit.

So far I've involved in experiments at:

One of my current interests is in-medium modifications of the Delta resonance when placed in nuclear matter. One can investigate this using electron or photon beams produced by dedicated electron accelerators. I am preparing an experiment at MAMI which will look at the neutral decay products of a Delta0, a reaction channel which promises good sensitivity as one expects little physical background.

A first write-up on the Edinburgh Germanium Telescope, a development I have been busy with for quite a while now.

A halo nuclei experiment, something which can be cleanly done using tagged photons.

Some photos of TAPS experiments which are running in Mainz.


PhD at Tübingen University

My PhD work was measuring the pionic double charge exchange reaction. During some time, a hypothetical heavy neutrino was hunted, too. my former home institute:
Physikalisches Institut
Fakultät für Physik
Universität Tübingen
"the Pion Group" (Prof. Clement)
photo in may 1997
Doktorarbeit (Doctor Thesis): abstract, full thesis,
(in german language, the postscript files are located at Tübingen)
PhD thesis in A5 paper size (browsable in Ghostview, local copy)
experiments+setup, the DCX experiments
and photos from the Paul Scherrer Institut
some private items:
a few photos taken just after my PhD exam


Searches for Heavy Neutrino and Heavy Boson

Having heard of the timing anomaly seen in the KARMEN experiment, I was initiating an experiment at PSI to search for such a hypothetical heavy neutrino in 1995, during my PhD time.

Additional motivation has emerged in the meantime, and there are a few photos of the MUEX experiment performed in July 1999 at PSI to look for a hypothetical binary decay branch of the muon.

Below are links to papers from our searches for a possible massive particle which could explain the timing anomaly seen in the KARMEN experiment.

Upper Limit for the pi -> mu x Branching Ratio
piN newsletter #10, 10/1995, page 197 (postscript, 423kB)
Search for the Hypothetical pi -> mu x Decay , full paper (postscript, 483kB),
Physics Letters B 363 (1995) 41-45 , [ first page (postscript, 48kB) ]

Search for Exotic Muon Decays , full paper (postscript, 479kB),
Physics Letters B 446 (1999) 363 , [ first page (postscript, 77kB) ]

Search for a Hypothetical Decay mu+ -> e+ + X , poster
IOP Conference Salford, 12-14 April 1999


Personal Interests:


Camerata vocalis Tübingen

(chamber choir of Tübingen University)
a capella music - since I've been for long years a member of the
Camerata vocalis Tübingen, the chamber choir of Tübingen University.

Camerata vocalis Tübingen
Chamber Choir of the University of Tübingen
a little booklet and a photo album
concert tour to Africa in autumn 1996
Ostrava, june 1997, Janacek festival
Albania and Greece, may+june 1998
Carmina Burana 1999 a number of photos from rehearsal, concert and afterwards


General Pages

There are also some pages around which I modify now and then.

My photo gallery holds pictures from places where I have travelled to and was lucky enough to have my vintage digital camera with me. You will also find the odd scanned photo there.

With my significant intererest in music I though why not gathering bits and pieces of music, especially a capella music I happened to have recorded on a sound gallery. I mostly started this before mp3 came around, so you find AIFF, AU and WAV files there which do not reflect the full quality of the original. I know that mp3 would give about the same file sizes while conserving the original quality.

And I started a page on a capella music with links to the odd web pages I've written on music groups. I had been singing for a couple of years in the Vocaholics, a 'men only' a capella pop group in Tübingen. They (we) are quite special in concert. Then there is the Junger Süddeutscher Kammerchor, Berhard Epstein's ongoing effort for a high quality chamber choir. It is really worth listening to them in concert.

Then there are a few half-started pages like travelling by train, remarks on a bridge or ßßß - capital ß where I think I spent too much effort as to simply discart them.

A photo page about the volcanos of Mount Rainier and Mount St. Helens in the Cascades.

More recently I have created two more pages. The first is about the Kochertalbahn in the southwest of Germany, a disused railway nowadays but which did have and also might have in future a reasonable potential both for passenger and freight traffic. The second, now actually a collection of pages, is about the funicular in Künzelsau, which started operation in October 1999. The pages are in german, english and french language.


Klaus Föhl homepage - kf@ph.ed.ac.uk     1999-11-20