Determination of SPI coded mask transmission matrix

Sánchez, F.; Reglero, V.; Chato, R.; Rodrigo, J.; Velasco, T.; Gasent, J. L.; Alamo, J.; Burgos, J. A.; Blay, P.; Martínez, S.; Suso, J.; Doñate, M.
Referencia bibliográfica

In: Exploring the gamma-ray universe. Proceedings of the Fourth INTEGRAL Workshop, 4-8 September 2000, Alicante, Spain. Editor: B. Battrick, Scientific editors: A. Gimenez, V. Reglero & C. Winkler. ESA SP-459, Noordwijk: ESA Publications Division, ISBN 92-9092-677-5, 2001, p. 661 - 664

Fecha de publicación:
The goal of this paper is to present the Transmission Matrix of the SPI Mask STM/QM Model. The experimental set-up used to determine INTEGRAL Spectrometer (SPI) Mask Transmission Matrix is hereafter described: collimation system, radioactive sources, energy ranges covered and pitch angles covering the expected SPI Field of View. The QM results fulfil transparency/opacity requirements. Same materials and manufacturing procedures have been used in both STM/QM and FM Masks, consequently we do not expect significant changes on the FM Transmission Matrix. Preliminary results of the Flight Model support this statement.