OSCILLATOR FOR A CYCLOTRON HAVING TWO DEES

• US 3,689,847 A
• Filed: 05/04/1971
• Issued: 09/05/1972
• Est. Priority Date: 05/29/1970
• Status: Expired due to Term

• Current Assignee: N/A
• Original Assignee: N/A
• Primary Examiner(s): John Kominski
• Application Number:
  US05/140,136
• Time in Patent Office: 490 Days
• Field of Search: 328/234 331/168,56,59
• US Class Current: 315/502
• CPC Class Codes: H03B 5/1835 the active element in the amplifier being a vacuum tube
• CPC Class Codes: H05H 7/02 Circuits or systems for supplying or feeding radio-frequency energy radio-frequency generators H03B

Abstract

An oscillator for a cyclotron having two accelerating electrodes which are not connected together. The oscillator comprises two electron tubes, of which the cathodes are connected together by a low-loss impedance (capacity or inductance). As a result of this the oscillator oscillates either with the two accelerating electrodes in the push-pull mode while excluding the parallel mode, or in the parallel mode while excluding the push-pull mode.

Claims

1. An oscillator for a cyclotron comprising two accelerating electrodes, an envelope surrounding the two accelerating electrodes, two wave tubes each having an inner conductor and an outer conductor which are shortcircuited at one side, of each of which on the other side the inner conductor is connected to one of the accelerating electrodes and the outer conductors of which are connected to the envelope, two coupling impedances for the two wave tubes and an electron tube, characterized in that the oscillator comprises a second electron tube, each electron tube being connected as an oscillator with a wave tube, an accelerating electrode and a coupling impedance, a low-loss impedance being connected between the cathode of the first electron tube and the cathode of the second electron tube, and being proportioned so that the oscillator oscillates with the two accelerating electrodes either in the push-pull mode while excluding the parallel mode or in the parallel mode while excluding the push-pull mode.

2. As oscillator as claimed in claim 1, characterized in that the low-loss impedance is capacitive and proportioned so that the oscillator oscillates with the two accelerating electrodes in the push-pull mode while excluding the parallel mode.