Beam Cooling

The Frankfurt Neutron Source FRANZ will be a compact accelerator driven neutron source utilizing the 7Li(p,n)^7Be reaction with a 2 MeV proton beam. Recent comissioning efforts showed succesful proton beam operation at the targeted RFQ injection energy of 60 keV up until the point of RFQ injection. [...]

As various experimental reactors in Europe are already or will be decommissioned over the next years, new neutron sources will be necessary to meet the demand for neutrons in research and development. The High Brilliance Neutron Source is an accelerator driven neutron source planned at the Forschungszentrum Jülich. [...]

A novel 704.4 MHz CH structure is under develop-ment. Due to its relatively small spatial dimensions (22 cm in diameter and 33.7 cm in length), the additive manufacturing (AM) technology is an attractive choice for the construction. [...]

A 1–2 GHz stochastic cooling system is being de-veloped to provide fast 3D cooling of hot secondary beams (antiprotons at 3 GeV and rare isotope ions at 740 MeV/u) at intensities up to 10^8 particles per cycle. For antiproton cooling, cryogenic plunging pick-up electrodes will be used to improve the ratio of Schott-ky signals to thermal noise. [...]

Preface -- Chapter 1: Introduction -- Chapter 2: Beam Physics with Space Charge Challenges -- Chapter 3: Injectors for Modern Science Facilities -- Chapter 4: Injectors for Accelerator-Driven Systems -- Chapter 5: Towards Efficient Long RFQ Accelerators -- Chapter 6: Frequency Jump Using 704.4 MHz RFQ and CH Accelerators

A 704.4 MHz Crossbar H-mode (CH) drift tube linac has been proposed for performing a radio frequency jump at ß = 0.2. Up to now, the highest frequency of the constructed CH cavities is 360 MHz. [...]