Photon Factory
 

PF 2.5GeV Ring Beam Line PF-AR (6.5GeV) Beam Line

The Photon Factory has two storage rings for synchrotron radiation research. One is a dedicated 2.5 GeV positron (electron) storage ring (I=400mA,t=60hrs) which has been operational since 1982. The other is the 6.5 GeV Tristan Accumulation Ring (I=40mA,t=3hrs) which has been used parasitically for synchrotron radiation research since 1986. About 700 experimental proposals are active now covering a variety of scientific fields.



Upgrade program of 2.5 GeV ring

In 1997 the lattice of the 2.5 GeV ring is being modified to reduce the emittance of the electron beam from the present value of 130 nmrad to 27 nmrad (Commissioning of the ring is being scheduled in Oct. 1997). With this modification, the brilliance of the SR source will be enhanced by a factor of 5 to 10.

Modification of the lattice of 2.5Gev ring for emittance upgrade	Brilliance of 60-pole undulator is enhanced by a factor of 5 to 10.

Conversion of 6.5 GeV Tristan Accumulation Ring to a dedicated synchrotron radiation source for production of intense pulse X-rays

The parameters of the proposed ring is given in the table. With this new machine, pulse X-rays having a pulse width of 100ps and repetition interval of 1.25 ms will be produced. Time-resolved diffraction and spectroscopy experiments will be carried out for studies of intermediate structures of reacting biological systems, chemical catalysis and condensed matters. By building new experimental halls, 5 new insertion device beamlines and 3 bending magnet beamlines will be constructed in addition to the existing beamlines (2 insertion devices and 2 bending magnets).

PF-AR : New Ring for the production of Intense Pulse X-Rays
Energy	6.0 GeV
current	200 mA
emittance	159 nmrad
life time	10 hrs
mode of operation	single bunch
circumference	377.26 m
Bending radius	17.825 m
number of insertion device	6

typical layout of a beam line	Present building and beam lines