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DORIS
The 4.5 GeV storage ring DORIS III at DESY in Hamburg is a dedicated synchrotron radiation source with 9 wiggler/undulator insertion devices and several dipole beamlines. In total there are 36 beamline stations. The stored current is 140 mA of positrons in 5 bunches with a typical lifetime of 10 to 18 hours. The radiation in the extreme ultraviolet and x-ray regime is used in a broad range of applications from biology and chemistry to material science.
Energy |
4.45 |
GeV |
Beam Current |
140 |
mA |
Circumference |
289.193 |
m |
Harmonic Number |
482 |
|
revolution frequency |
1036652.49 |
Hz |
Hor. Beam Emittance |
410 |
nm rad |
Vert. Beam Emittance |
12 |
nm rad |
Qx |
7.18 |
|
Qz |
4.74 |
|
fs |
42 |
kHz |
Rel. Energy Spread |
0.11 |
% |
Bunch Length (1σ) |
19.5 |
mm |
Momentum Compaction |
0.015 |
|
Hor. Damping Time |
2.6 |
msec |
Long. Damping Time |
1.2 |
msec |
Mean Beta-X |
9.6 |
m |
Mean Beta-Z |
13.0 |
m |
Energy Loss p Turn |
3.466 |
MeV |
RF Frequency |
499 666 500 |
Hz |
RF Voltage |
7.2 |
MV |
synchr. phase |
25.6 |
degree |
Bending Radius |
12.18 |
m |
critical energy (bending) |
16.0 |
keV |
