The beamline for the circularly polarized synchrotron radiation at the 6-Ge V Accumulation Ring for the TRISTAN project is now under construction. The insertion device of this beamline was designed to produce circularly polarized x rays at the photon energy range of200 e V-I 00 ke V. The beamline is divided into the following three branches: ( 1) High resolution Compton scattering and magnetic Compton scattering experiments; (2) mUltipurpose experiments such as magnetic x-ray scattering and magnetic x-ray absorption; and (3) completely circularly polarized soft x rays.
Articles you may be interested inDesign of high heat load whitebeam slits for wiggler/undulator beamlines at the Advanced Photon Source Rev. Sci. Instrum. 66, 1792 (1995 10.1063/1.1146464 Thermomechanical analysis of the whitebeam slits for a wiggler/undulator beamline at the Advanced Photon Source Rev.Design and experience of the initial operation of a new beamline (BL-16) for a 3.6-m-long, 53pole wiggler/undulator constructed at the Photon Factory are described. The insertion device has hybrid permanent magnets with a period of 12 cm and a maximum magnetic field of 1.47 T. In the undulator mode, the energy of the fundamental peak can be varied from 40 to 400 e V. In the wiggler mode, an x-ray beam (critical energy of 6 ke V) 50-100 times more intense than that from the bending magnets is obtained. The beamline consists of two time-shared branch lines; a side beamline for soft x-rays in the undulator operation, to which photon beams are deflected sideways by a cylindrical SiC mirror, and a straight line for hard x rays under the wiggler operation. On the hard x-ray line, a fixed-exit sagittal-focusing double-crystal monochromator has been installed and commissioned. Collimating and refocusing mirrors will be installed in 1989. On the undulator beamline, a soft x-ray monochromator utilizing sophisticatedly devised aberration correction optics is commissioned.
Reconstruction of the Photon Factory storage ring (PF ring; 2.5 GeV) is now in progress to provide very brilliant synchrotron radiation to users, i.e. the emittance is being reduced by a factor of five. Components, such as the quadrupole and sextupole magnets, vacuum chambers, beamlines and beam-position monitors, are being replaced by new ones in 16 normal-cell sections of the PF ring. The accelerating cavities, injection systems and control systems are also being replaced. Operation will commence when the improvements are completed on 1 October 1997.
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