[Neutron] Symposium F. Tasset - March 6 @ ILL

[Eddy Lelièvre-Berna]

Dear colleagues,

On March 6, the ILL will organise a symposium to honor Dr. F. Tasset's  
life-long contributions to polarised neutron scattering, and in  
particular the generalisation of the polarisation analysis (Spherical  
Neutron Polarimetry) and his pioneering contributions towards the  
polarisation of wide-band neutron beams with 3He spin filters.
Francis started playing with polarised neutrons in 1966 on the  
diffractometer DN2 of the CEA-Grenoble. After convincing M. Maier- 
Leibniz to build a polarised neutron three-axis spectrometer at ILL,  
he met P.J. Brown and J.B. Forsyth also interested by polarised  
neutron techniques. In 1975-76, he worked on superconducting materials  
and met W.C. Koehler. After his return to ILL, he decided to exploit  
the Meissner effect and built a prototype of the Cryoflipper. From the  
successful results, he started to built a prototype of Cryopad with  
the help of S. Pujol. After solving many problems, he finally  
succeeded just before the long shutdown in 1990. The Spherical Neutron  
Polarimetry technique was born. In parallel, he tried to polarise a  
neutron beam with a spin filter but the disappoint was huge with only  
12% 3He polarisation. A few years later, thanks to a steadfast  
motivation, he built a second-generation Cryopad at ILL and a first  
polarised 3He filling station at Mainz University. In 1998, the  
Spherical Neutron Polarimetry was adopted and people started speaking  
about 3He spin filters. In 2000-02, he built the filling station which  
is now the reference worldwide.

The participation to the symposium is free of charge but limited to a  
number of participants. Please, in order to help us organise this  
event, register before February 20 from the web pages of the Symposium:

http://www.ill.eu/sane/home/events/symposium-f-tasset/

If you have any question regarding your registration or participation,  
please contact Agnès Ratel (ratela at ill.eu).

With my best regards,
Eddy
______________________________________________
Dr. Eddy LELIEVRE-BERNA - <lelievre at ill.eu>
Advanced Neutron Environment Team Leader - <http://www.ill.eu/sane>