| Paper |
Title |
Page |
| RPAE036 |
Damping Wigglers for the PETRA III Light Source
|
2446 |
| |
- M. Tischer, K. Balewski, W. Decking, M. Seidel, L. Yongjun
DESY, Hamburg
- V. Kuzminykh, E. Levichev, P. Vobly, K. Zolotariov
BINP SB RAS, Novosibirsk
|
|
| |
Within the reconstruction of the PETRA booster ring at DESY towards a third generation light source after 2007, damping wigglers will be installed to reduce the emittance to a value of 1 nmrad. Two damping sections in the long straights of PETRA have been assigned to accommodate 20 wigglers in total. The wigglers will be permanent magnet devices with a fixed gap which are surrounded by an iron enclosure to reduce the leakage flux. Each wiggler will provide a damping integral of 4 T2m per segment and generate a synchrotron radiation power of 42 kW. A short one period long prototype has recently been built to prove the magnetic design and study the correction scheme for tuning the pole strength. The wiggler segments will be followed by an SR absorber shading the downstream quadrupole and successive wiggler segment, the accumulated on-axis power of about 200 kW will be taken up by the final absorber at the damping section end.
|
|
| RPPE037 |
The Vacuum System for PETRA III
|
2473 |
| |
- M. Seidel, R. Bospflug, J. Boster, W. Giesske, U. Naujoks, M. Schwartz
DESY, Hamburg
|
|
| |
It is planned to rebuild the storage ringe PETRA II, presently used as pre-accelerator of HERA, into a high performance synchrotron light source. By making use of the large circumference and the installation of damping wigglers it will be possible to achieve exceptionally small emittances in the new storage ring. The requirements for the vacuum system are more advanced in the new storage ring as well. Besides the goal to achieve low pressures and fast conditioning times a major key for the new ring is a very high orbit stability which implies high thermal stability of BPM's and other vacuum components. We describe the basic concepts for chamber layout, pumping schemes, synchrotron radiation absorption and mechanical stability for the standard arcs and the experimental octant. Furthermore the expected performance will be discussed.
|
|