100 MeV Race Track Microtron for the Metrology Light Source at Physikalisch-Technische Bundesanstalt (PTB)

Synchrotrons

Danfysik is a leading supplier of equipment for synchrotron light sources, and you will find our products installed at most of the synchrotron facilities world wide.

Our supplies include

Turn-key delivery of Pre-injectors and Booster Rings
Storage Ring, Booster Ring and beam transport line magnets
Kickers and septum magnets
Vacuum systems
Support and girder systems
DC or pulsed magnet power supplies
Insertion devices

Close expanded view

100 MeV Race Track Microtron for the Metrology Light Source at Physikalisch-Technische Bundesanstalt (PTB)

Description

Danfysik has made the 100 MeV Race Track Microtron for the Metrology Light Source at Physikalisch-Technische Bundesanstalt (PTB), at Bessy-II site, Berlin, Germany

Data

Emittance
0.1 mm mrad
Energy spread
<100 keV
Output beam energy
100 MeV
Pulse duration
0.3-1.5 µs
Current
8 mA

100 MeV Race Track Microtron for the Metrology Light Source at Physikalisch-Technische Bundesanstalt (PTB), at Bessy-II site, Berlin, Germany

Project start 2006. Project completion 2007.

100 MeV microtron for the Metrology Light Source at Physikalisch-Technische Bundesanstalt (PTB)

The Racetrack Microtron is a high efficiency electron accelerator featuring: High Compactness
Low energy spread
Low energy spread
Low beam emittance
Ease in operation

Danfysik has build a 100 MeV RTM the Metrology Light Source at PTB-Berlin that will be used as injector to a storage ring. The overall layout of the electron accelerator is presented in figure below, while its main parameters are listed in the below table.
The electron source to the RTM is a 90 keV thermionic Pierce-type diode gun providing an electron pulse of 3‑4 ms. After the electron gun the beam is deflected onto the axis of a multi-cell 3 GHz accelerating RF structure by a small 90° achromatic beam line. The accelerating RF structure is a standing wave structure with an energy gain of 5 MeV in both directions. The beam is circulated through the linac with two large bending magnets until it reaches its final energy. The energy gain per passage of the linac is 5.3 MeV which means that the beam will pass 19 times before it is extracted at the full energy, 100 MeV by means of a septum magnet.

The RTM is designed with state of the art technology and some new features are

A full metal vacuum system to exclude parts to be exchanged due to radiation damage.
Only ion pumps are to achieve UHV and turbo pumps are used for roughing.
High stability RF system where we use solid state modulators for both the klystron and the electron gun.
Epics control system.
Remote control of linac and main magnet position for fast commissioning.
Extensive diagnostics for full control of the accelerator.
The whole accelerator is built by independent sub systems to ease design and construction as well as operation.

General parameters of the RTM
Repetition rate	10 Hz
Field of 180° dipole magnets	1.1 T

Electron gun
Electron gun current	0-400 mA
Electron gun pulse	3-4 ms
Injection beam energy	90 keV

Beam parameters
Emittance	0.1 mm mrad
Energy spread	<100 keV
Output beam energy	100 MeV
Pulse duration	0.3-1.5 ms
Current	8 mA

Acceleration
RF frequency	3 GHz
Energy gain	5.3 MeV
Number of RF structure passages	19