[Pw_forum] use of CASTEP USPP parameters

[José C. Conesa]

Hi all,
   I am a licensed user of Accelrys' CASTEP package, which includes a 
fairly extense library of ultrasoft pseudopotentials. The files in it have 
(apart from a propietary format) a heading with pseudopotential-
determining parameters, but the format and contents of this heading is 
to my knowledge not documented.
   I should like to have a general procedure allowing to obtain, from the 
data in that heading, a parameter file suitable as input to Vanderbilt's 
USPP generating code, so that in the end a pseudopotential utilizable 
in Espresso, and equivalent to one in the CASTEP library, can be 
obtained. I know from Accelrys that a licensed CASTEP user is 
allowed to do this. Has any of you experience in such a conversion? 
Can you facilitate to me such a procedure?
   Thanks in advance,
Jose C. Conesa
Instituto de Catalisis y Petroleoquimica, CSIC
Campus de Cantoblanco
28049 Madrid  -  Spain
Phone Nr. 34-91-5854766
Fax Nr. 34-91-5854760