A gas-insulated mega-ampere-class linear transformer driver with pluggable bricks

This paper presents the design and test of a gas-insulated linear transformer driver (LTD) cavity aimed at the Z-pinch experimental device CZ-34. The LTD cavity has a diameter of 2290 mm and a height of 346 mm. It consists of 23 main bricks and 1 trigger brick. Each main brick is comprised of two 10...

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Veröffentlicht in:Review of scientific instruments 2020-12, Vol.91 (12), p.123303-123303
Hauptverfasser: Jiang, Xiaofeng, Sun, Fengju, Wang, Zhiguo, Jiang, Hongyu, Qiu, Aici, Li, Xingwen, Wu, Jian, Chen, Li, Li, Penghui, Jia, Shenli
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container_end_page 123303
container_issue 12
container_start_page 123303
container_title Review of scientific instruments
container_volume 91
creator Jiang, Xiaofeng
Sun, Fengju
Wang, Zhiguo
Jiang, Hongyu
Qiu, Aici
Li, Xingwen
Wu, Jian
Chen, Li
Li, Penghui
Jia, Shenli
description This paper presents the design and test of a gas-insulated linear transformer driver (LTD) cavity aimed at the Z-pinch experimental device CZ-34. The LTD cavity has a diameter of 2290 mm and a height of 346 mm. It consists of 23 main bricks and 1 trigger brick. Each main brick is comprised of two 100 nF capacitors connected electrically in series with a field-distortion gas switch. The trigger brick is comprised of two 50 nF capacitors connected in series with a compact multi-gap gas switch. All bricks are placed in the cavity filled with compressed SF6 and are pluggable like drawers. The trigger pulse generated by the trigger brick passes through an azimuthal transmission line to the trigger ring and makes the main bricks discharge synchronously. The LTD cavity can deliver ∼1 MA current pulse with a rise time of 115 ns to 0.08 Ω liquid resistance load when the charging voltage is ±100 kV, which is in good agreement with the circuit simulation results. Experimental results demonstrate the successful application of using gas insulation and pluggable bricks. The technical feasibility of the charging configuration, triggering method, and isolation resistors is verified. There is little difference in output performance as return-current rods replaced the outside metal cylinder, which provides a new path for the design of LTD cavities in series.
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The LTD cavity has a diameter of 2290 mm and a height of 346 mm. It consists of 23 main bricks and 1 trigger brick. Each main brick is comprised of two 100 nF capacitors connected electrically in series with a field-distortion gas switch. The trigger brick is comprised of two 50 nF capacitors connected in series with a compact multi-gap gas switch. All bricks are placed in the cavity filled with compressed SF6 and are pluggable like drawers. The trigger pulse generated by the trigger brick passes through an azimuthal transmission line to the trigger ring and makes the main bricks discharge synchronously. The LTD cavity can deliver ∼1 MA current pulse with a rise time of 115 ns to 0.08 Ω liquid resistance load when the charging voltage is ±100 kV, which is in good agreement with the circuit simulation results. Experimental results demonstrate the successful application of using gas insulation and pluggable bricks. 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source AIP Journals Complete; Alma/SFX Local Collection
subjects Bricks
Capacitors
Charging
Circuits
Holes
Insulation
Load resistance
Resistors
Scientific apparatus & instruments
Transformers
Transmission lines
title A gas-insulated mega-ampere-class linear transformer driver with pluggable bricks
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