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Graphite sheet for beam sensor, beam sensor electrode employing same, and beam sensor

A graphite sheet and sensor technology, applied in the field of beam sensors, can solve the problems of large resistance deviation, difficulty in reducing film thickness, and high probability of fracture, and achieve the effects of reduced beam loss, improved durability, and excellent thickness uniformity.

Inactive Publication Date: 2018-03-27
KANEKA CORP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In addition, this carbon graphite film has a high probability of breaking during laser processing, and the yield is poor.
In addition, it is also difficult to reduce the thickness of the film, which is about 2.2 μm in the embodiment, and there is a limit to reducing the beam loss when the accelerator beam passes through.
In addition, the resistance deviation of each band after being processed into a band shape is also large.

Method used

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  • Graphite sheet for beam sensor, beam sensor electrode employing same, and beam sensor
  • Graphite sheet for beam sensor, beam sensor electrode employing same, and beam sensor
  • Graphite sheet for beam sensor, beam sensor electrode employing same, and beam sensor

Examples

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Embodiment 1

[0134] [Manufacturing method of polyimide film]

[0135] Dissolve 4 equivalents of pyromellitic dianhydride (PMDA) in a DMF solution in which 3 equivalents of 4,4'-diaminodiphenyl ether (ODA) is dissolved, and synthesize a prepolymer having acid anhydrides at both ends. 1 equivalent of p-phenylenediamine (PDA) was dissolved in the solution containing this prepolymer to obtain a polyamic acid, and a solution containing 18.5 wt% of this polyamic acid was obtained.

[0136] After adding and stirring the imidation catalyst containing 1 equivalent of acetic anhydride, 1 equivalent of isoquinoline, and DMF with respect to the carboxylic acid group contained in a polyamic acid, this solution was defoamed, cooling. Cooling to 0°C was performed from stirring to defoaming. Next, this mixed solution was applied on an aluminum foil so as to have a predetermined thickness after drying.

[0137] The mixed solution layer on the aluminum foil was dried in a hot air oven at 100°C for 60 seco...

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Abstract

The present invention addresses the problem of providing a graphite sheet for a beam sensor with which excellent yield can be obtained during laser processing. The graphite sheet for a beam sensor according to the present invention is characterized in that the a-b plane surface does not include eye-shaped protrusions.

Description

technical field [0001] The present invention relates to a graphite sheet for a beam sensor, an electrode for a beam sensor using the graphite sheet, and a beam sensor. These are preferably accelerator beam sensors, graphite sheets, electrodes etc. used therefor. Background technique [0002] Accelerators are used to accelerate charged particles to prepare beams of aggregates thereof. Accelerator beams are frequently used in state-of-the-art technologies in materials science, life sciences, high-energy physics, medical applications, and more. [0003] It is important to observe the accelerator beam in real time without damaging the shape of the passing beam, and it is desired to develop an accelerator that does not adversely affect the passing beam, has sufficient detection sensitivity, and has durability for long-term continuous use beam sensor. [0004] As such an accelerator beam sensor, for example, a beam monitor electrode and a beam monitor device obtained by forming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/29H05H13/00H05H13/04
CPCH05H2007/125H05H7/00H05H2007/008H05H2007/088G01T1/29H05H13/04A61N5/1048
Inventor 多多见笃立花正满村上睦明
Owner KANEKA CORP
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