A four-port launcher for a multi-moded DLDS power distribution system
Conference
·
OSTI ID:666087
- Stanford Univ., CA (US). Stanford Linear Accelerator Center
The authors describe a structure for launching the TE{sub 01} and both polarizations of TE{sub 12} modes into a highly overmoded low loss circular waveguide providing remote transmission for a multi-moded Delay Line Distribution System (DLDS). The power from four sources is delivered to four structure ports by rectangular waveguide, and the mode for each pulse subsection is selected by varying the relative phases of the sources. The four ports symmetrically feed a section of waveguide with a fourfold symmetric four-leaf clover-like (or quatrefoil) cross section, dimensioned so as to propagate only four TE modes, characterized as 0, {pi}/2 (two polarizations), and {pi} modes. The 0 and {pi}/2 modes are well matched, the {pi} mode only moderately so. A low loss taper transforms the initial cross section to a circular cross section; the 0 mode transforming to TE{sub 01}, the {pi}/2 to TE{sub 11}, the {pi} to TE{sub 21}, all with negligible mode conversion. A sausage type mode transducer t hen converts TE{sub 11} to TE{sub 12} (a lower loss mode), and the diameter is then expanded to the full {approx}five inch diameter of the delay line. A separate structure to divert power from the last pulse subsection to the local group of accelerator structures is required.
- Research Organization:
- Stanford Univ., Stanford Linear Accelerator Center, CA (US); Univ. of California, San Diego, La Jolla, CA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 666087
- Report Number(s):
- SLAC-PUB--7867; CONF-980671--; ON: DE98059247
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mode Launcher Design for the Multi-moded DLDS
Development of a Multi Megawatt Circulator for X Band
Pure mode swept frequency TE/sub 02/ measurements in 6. 35 cm circular waveguide
Technical Report
·
Wed Apr 30 00:00:00 EDT 2003
·
OSTI ID:813335
Development of a Multi Megawatt Circulator for X Band
Conference
·
Mon Mar 24 00:00:00 EDT 2008
· Conf.Proc.C030512:1127,2003
·
OSTI ID:926195
Pure mode swept frequency TE/sub 02/ measurements in 6. 35 cm circular waveguide
Conference
·
Mon Dec 31 23:00:00 EST 1984
·
OSTI ID:6414309