A tensioner

Abstract

The invention discloses an extended wire instrument, which comprises a detection element, a first shielding tube, a second shielding tube and an extended wire, wherein a cavity is arranged in the detection element; the first shielding tube is connected with one end of the detection element; the second shielding tube is connected with the other end of the detection element; the extended wire is arranged in the cavity; and when the detection element is used for measuring a current change amount when an element to be detected generates a displacement change amount relative to the extended wire, the displacement change amount of the element to be detected is obtained. The extended wire instrument disclosed by the invention not only can be used in environment without electromagnetic radiation but also can be used in the presence of electromagnetic radiation.

Description

technical field [0001] The invention relates to the field of accelerators, in particular to a tensioner. Background technique [0002] At present, most of the existing tension line instruments are used for deformation monitoring in the fields of water conservancy, electric power or earthquake crust, etc., but the above tension line instruments are not suitable for the accelerator field, nor can they be used in the wide temperature range from low temperature 2K to normal temperature 300K used in . [0003] Although a photoelectric tensioner suitable for the accelerator field has been proposed abroad, it cannot be used in accelerators with various electromagnetic radiation and single event effects because it uses a CCD / CMOS camera as a sensor. In particular, in a superconducting linear accelerator, when the cryostat works in the 2K liquid helium temperature region, the above-mentioned tensile wire instrument cannot be used. Contents of the invention [0004] In view of thi...

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Problems solved by technology

[0002] At present, most of the existing tension line instruments are used for deformation monitoring in the fields of water conservancy, electric power or earthquake crust, etc., but the above tension line instruments are not suitable for the accelerator field, nor can they be used in the wide temperature range from low temperature 2K to normal temperature 300K used in

[0003] Although a photoelectric tensioner suitable for the field of accelerators has been proposed abroad, it cannot be used in accelerators with various electromagnetic radiation and single event effects because it uses a CCD / CMOS camera as a sensor.

In particular, in superconducting linear accelerators, when the cryostat works in the 2K liquid helium temperature region, the above-mentioned tensile wire instrument cannot be used

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