Four-harmonic buncher for effective combination of radioactive and stable beams
- RadiaBeam Systems, LLC, Santa Monica, CA (United States)
The Argonne Tandem Linac Accelerator System (ATLAS) is the only national user facility for low-energy stable heavy ion beams. Plans to upgrade ATLAS into a multi-user facility to simultaneously accelerate both stable and radioactive beams require a multi-harmonic buncher (MHB) before the radio-frequency quadrupole (RFQ) that can provide enough voltage to bunch heavy ion beams with low charge to mass ratio. The existing MHB is realized with lumped elements and cannot withstand the required voltage due to the thermal issues. Other resonator-based MHBs can only provide three harmonics and are too bulky (6 m long) if scaled to 12 MHz. We have designed a four-harmonic buncher based on coaxial quarter- and half-wave resonators. We implemented the folded resonator design to significantly reduce the dimensions of the system down to ~2 meters. Fast power switching is implemented to adjust the harmonic voltages as required for simultaneous acceleration of stable and radioactive beams with different intensities.
- Research Organization:
- RadiaBeam Systems, LLC, Santa Monica, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- SC0017104
- OSTI ID:
- 1460809
- Type / Phase:
- SBIR (Phase I)
- Report Number(s):
- DOE-RBS-17104
- Country of Publication:
- United States
- Language:
- English
Similar Records
Design study of low-energy beam transport for multi-charge beams at RAON
Beam test of a grid-less multi-harmonic buncher.