WEAM1Y —  Parallel Session   (06-Jul-16   09:00—09:25)
Chair: L. Perrot, IPN, Orsay, France

Paper	Title	Page
WEAM1Y01	A Coupled RFQ-IH-DTL Cavity for FRANZ: A Challenge for RF Technology and Beam Dynamics	1
	R. Tiede, O. Meusel, H. Podlech, U. Ratzinger, A. Schempp, M. Schwarz IAP, Frankfurt am Main, Germany M. Heilmann GSI, Darmstadt, Germany D. Mäder BEVATECH, Frankfurt, Germany
	For the 'Frankfurt Neutron Source at the Stern-Gerlach-Zentrum' (FRANZ) facility an inductively coupled combination of a 4-rod radio-frequency-quadrupole (RFQ) and an 8 gap interdigital H-type (IH-DTL) structure will provide the main acceleration of an intense proton beam from 120 keV to 2.0 MeV. The RFQ-IH combination with a total length of about 2.3 m will be operated at 175 MHz in cw mode. The expected total power need is around 200 kW. Due to the internal inductive coupling only one RF amplifier is needed, which significantly reduces the investment costs. At present the RFQ is installed separately in the beam line for conditioning up to the design rf power and for measuring the beam quality behind the RFQ. In parallel, the IH-DTL is rf tuned together with a dummy RFQ outside the FRANZ cave. This paper will present the status of the project with emphasis on key questions like beam dynamics constraints, rf tuning issues and technological challenges resulting from the high thermal load in cw operation.
	Slides WEAM1Y01 [3.761 MB]