This presentation will give an overview of the development work at ISIS neutron and muon source, STFC on the Super MuSR project. This project is an upgrade to the existing MuSR instrument at ISIS, which will lead to an improved time resolution and counting rate. An emphasis will be placed on the electrostatic chopper which will produce a ±35kV voltage reversal within 10ns, flipping the...
At BESSY II fast pulsed magnets are used for injection and extraction
processes. Originally, pulse current measurement systems for all pulsed
elements were set up in the framework of BESSY II top-up operation to
show that the required level of voltage stability was achieved. Now it
is essential for stable user operation at high average injection
efficiencies of about 98 %. A model based...
In the various circular and linear accelerators at DESY and European XFEL a total number of ca. 100 kicker systems is being operated.
In recent years, a failure monitoring has been introduced for these systems to systematically study reasons for system failures and track down failure sources.
In this talk we will discuss the failure statistics collected up to now and review the kicker...
The SPS injection kicker magnets (MKP) were developed in the 1970’s, before beam induced power deposition in the ferrite yoke was considered an issue. These magnets are very lossy from a beam impedance perspective which limits SPS operation, e.g. with the higher intensity beams needed for HL-LHC. An upgraded design, with serigraphy applied to alumina U-chambers, has been developed to...
Selection of single muons is needed for two experiments at PSI. Four +/- 5kV Switches in a bridge configuration provide a +/-10kV potential for switching muons at a 37kHz rate. A successful system was developed and in operation for 20 years. It relies on a flow of FC77 coolant directly on the transistors in the HV switch to remove ca. 1kW of heat. Unfortunately, the switches were destroyed...
Top-Up injection in the new SOLEIL II storage ring is planned to use an off-axis on-momentum betatron scheme. The final kick on the injected beam into the small dynamic aperture is given by a non linear kicker or MIK. To ensure the quality and transparency of the injection, the peak magnetic field generated by the MIK must be located at 3.5 mm from the stored beam axis while the zero-field...
The BESSY booster kicker magnets have been powered with PFL type kicker pulsers since the BESSY II project was accomplished successfully. The kicker pulsers systems were realized with floating switch topologies applying CX 1154 thyratrons. After more than 25 years of operations the applied thyratron based kicker pulser units show wear and tear. The used pulser technology has obstacles for the...
Swiss Light Source plans an upgrade to turn its existing Storage Ring (SR) into a modern diffraction limited light source (SLS 2.0). A 4-kicker bump scheme with new thick and thin septum will ensure the conventional injection in the smaller aperture of the new SR. To reduce further the perturbation of the stored beam during top-up, two new injection schemes are developed: “Fast” and...
