Nuclear Instruments and Methods 208 (1983) 91-96 91 North-Holland Publishing Company EXPERIMENTAL ACTIVITY AT THE ADONE WIGGLER FACILITY E. BURATTINI and A. REALE * Istituto Nazionale di Fisica Nucleate, Laboratori Nazionali di Frascati, and CNR, Rome, Italy E. BERNIERI, N. CAVALLO, A. MORONE, M.R. MASULLO and R. RINZIVILLO Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, and Istituto di Fisica Sperimentale dell'UniversitY, Napoli, Italy G. DALBA and P. FORNASINI Dipartimento di Fisica dell'Universith, Trento, Italy C. MENCUCCINI lstituto di Fisica della Facoltfi di lngegneria dell'Universith, Rome, Italy A short summary of the wiggler magnet beam lines and relative instrumentation installed at the Adone storage ring in Frascati is given. The future development of the wiggler laboratory is described. Preliminary results on the scientific activity in progress are presented. 1. Introduction A conventional transverse wiggler magnet was in- stalled into a straight section of the Adone storage ring in Frascati during 1980 to enhance the critical energy and to obtain a photon flux higher than the one emitted from a bending section. A first experimental station was also equipped inside the Adone hall and made available for preliminary work [1]. A new laboratory, outside the Adone building, about 30 m from the wiggler magnet, is presently being com- pleted. In this laboratory the radiation emerging at small angles from the wiggler axis will be utilized as a second X-ray beam. In this paper a brief description of the characteristics of the X-ray beam produced by the Adone wiggler magnet is given. The beam line, the monochromator and the data acquisition system are also described. In the last two sections of the paper some preliminary absorp- tion spectroscopy results on the activity in progress and the future prospects are presented. beam line, BX1, including the monochromator and the sample chamber. The X-ray beam is presently utilized at an experimental station inside the machine hall. Such an arrangement implies some space limitations for the ex- perimental apparatus and special personnel protection requirements. For these reasons all the apparatus is remotely controlled. adone bending magnet quadrupo!es\ ----~og7 ~ "~" wiggler magnet // ,"electron beam 2. Experimental layout In fig. 1 a schematic view of the Adone wiggler layout is given. The radiation emitted from the six full-poles equivalent magnet is travelling through a 12 m * Now at the Universit~t de'L'Aquila, Italy. 0167-5087/83/0000-0000/$03.00 © 1983 North-Holland Fig. 1. Schematic view of the Adone wiggler layout in the present configuration. II. WlGGLERS/UNDULATORS/OTHER DEVICES