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Title: Development of flat-topped RF voltage for TRIUMF

Abstract

A Test Facility with operating characteristics equivalent to the TRIUMF RF system was used to generate a flat-topped RF dee voltage at full operating values. The fundamental at 23 MHz, and the third harmonic at 69 MHz were combined in the single resonator. No difficulty was encountered with multipactoring in the addition of the third harmonic when the fundamental voltage was on at the level of a few kilovolts. Since the TRIUMF dees are flattened coaxial lambda/4 lines with uniform dee-to-liner spacing, the natural frequencies f1 and f3 fall quite near a 3/1 ratio. Only a slight warping of the resonator in two locations that affect f1 and f3 differently is required to tune for a given f1 and for f3 = 3f1, precisely. With the two high power signals (1800 kW at 23 MHz and about100 kW at 69 MHz in TRIUMF; 45 kW and about4 kW in the Test Facility) combined in one resonator, rather large filters in addition to the impedance matching networks are required in each drive line for isolation of the transmitters. The results of the tests and the physical layout are described as well as the control systems for autotuning and for amplitude andmore » phase of the two voltages.« less

Authors:
; ; ;
Publication Date:
Research Org.:
TRIUMF, Vancouver, B.C.
OSTI Identifier:
6120688
Report Number(s):
CONF-850504-
Journal ID: CODEN: IETNA; TRN: 86-004368
Resource Type:
Conference
Journal Name:
IEEE Trans. Nucl. Sci.; (United States)
Additional Journal Information:
Journal Volume: NS-32:5; Conference: Particle accelerator conference, Vancouver, Canada, 13 May 1985
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ELECTRIC POTENTIAL; PERFORMANCE TESTING; WAVE FORMS; TRIUMF CYCLOTRON; DEES; RF SYSTEMS; CAVITY RESONATORS; CONTROL SYSTEMS; HARMONICS; MHZ RANGE 01-100; POWER RANGE 1-10 MW; POWER RANGE 10-100 KW; TEST FACILITIES; TUNING; ACCELERATORS; CYCLIC ACCELERATORS; CYCLOTRONS; ELECTRODES; ELECTRONIC EQUIPMENT; EQUIPMENT; FREQUENCY RANGE; ISOCHRONOUS CYCLOTRONS; MHZ RANGE; OSCILLATIONS; RESONATORS; TESTING; 430303* - Particle Accelerators- Experimental Facilities & Equipment

Citation Formats

Enegren, T, Durieu, L, Michelson, D, and Worsham, R E. Development of flat-topped RF voltage for TRIUMF. United States: N. p., 1985. Web.
Enegren, T, Durieu, L, Michelson, D, & Worsham, R E. Development of flat-topped RF voltage for TRIUMF. United States.
Enegren, T, Durieu, L, Michelson, D, and Worsham, R E. 1985. "Development of flat-topped RF voltage for TRIUMF". United States.
@article{osti_6120688,
title = {Development of flat-topped RF voltage for TRIUMF},
author = {Enegren, T and Durieu, L and Michelson, D and Worsham, R E},
abstractNote = {A Test Facility with operating characteristics equivalent to the TRIUMF RF system was used to generate a flat-topped RF dee voltage at full operating values. The fundamental at 23 MHz, and the third harmonic at 69 MHz were combined in the single resonator. No difficulty was encountered with multipactoring in the addition of the third harmonic when the fundamental voltage was on at the level of a few kilovolts. Since the TRIUMF dees are flattened coaxial lambda/4 lines with uniform dee-to-liner spacing, the natural frequencies f1 and f3 fall quite near a 3/1 ratio. Only a slight warping of the resonator in two locations that affect f1 and f3 differently is required to tune for a given f1 and for f3 = 3f1, precisely. With the two high power signals (1800 kW at 23 MHz and about100 kW at 69 MHz in TRIUMF; 45 kW and about4 kW in the Test Facility) combined in one resonator, rather large filters in addition to the impedance matching networks are required in each drive line for isolation of the transmitters. The results of the tests and the physical layout are described as well as the control systems for autotuning and for amplitude and phase of the two voltages.},
doi = {},
url = {https://www.osti.gov/biblio/6120688}, journal = {IEEE Trans. Nucl. Sci.; (United States)},
number = ,
volume = NS-32:5,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 1985},
month = {Tue Oct 01 00:00:00 EDT 1985}
}

Conference:
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