1. Universidad Complutense de Madrid (UCM),Facultad de Informática,Clemente are With the Computer Architecture Department,Madrid,Spain,E-28047
2. Universidad Complutense de Madrid (UCM),Facultad de Ciencias Físicas,Solucions & Product Dep., Defense, Indra Sistemas,Aranjuez,Spain,E-28300
3. Institue of Particle and Cosmos Physics (IPARCOS), Facultad de Ciencias Físicas, Universidad Complutense de Madrid (UCM),EMFTEL Dep,Spain
4. Institut Laue-Langevin (ILL),Grenoble CEDEX 9,France,F-38042
5. Infineon Technologies, Memory Solutions, Aerospace & Defense, 3901,San Jose,CA,USA,95134