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Digital NIM (Nuclear Instrument Module) data acquisition system

A data acquisition, analog and digital technology, applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems of high system cost, inability to promote and apply, etc., and achieve the effect of flexible system construction and high cost performance

Inactive Publication Date: 2012-07-11
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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AI Technical Summary

Problems solved by technology

However, the cost of VME and CAMAC systems is too high to be promoted and applied in other fields of data acquisition

Method used

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  • Digital NIM (Nuclear Instrument Module) data acquisition system
  • Digital NIM (Nuclear Instrument Module) data acquisition system
  • Digital NIM (Nuclear Instrument Module) data acquisition system

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Experimental program
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Embodiment Construction

[0030] The NIM chassis power supply used in the invention has six power supply levels of +-6V, +-12V, and +-24V.

[0031] The present invention adds an embedded computer controller and a 64-core backplane bus to the original NIM system that only has mechanical structure standards and electrical specifications, and through the backplane bus protocol, more NIM plug-ins can work together to realize small and medium-scale data Acquired functions to complete more complex physics experiments.

[0032] In the present invention, controller plug-in 1 and analog-to-digital signal converter (ADC) plug-in 2 have been designed, and the detailed introduction of these two kinds of plug-ins is as follows:

[0033] controller

[0034] Controller plug-in 1 is a standard single-width NIM plug-in, which is divided into the front panel of the controller, the rear panel of the controller and the inside of the controller; this plug-in implements a complete computer system, and can pass through a cu...

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Abstract

The invention relates to a digital NIM (Nuclear Instrument Module) data acquisition system, which comprises a controller insert, an analog-digital signal converter (ADC) insert and a self-defined bus, wherein the self-defined bus is used for connecting the controller insert with the analog-digital signal converter (ADC) insert and is cased in an NIM case. Through test of physical experiments, the data transmission rate can reach up to 66 MB / s, the system resolution is 0.0735 percent; the maximum event rate of 400 KSPS can be obtained with 1 / 2 us; and the minimum dead time of an acquisition card is 2.0 us.

Description

technical field [0001] The invention belongs to a data acquisition system and is directly applied to nuclear physics experiments or high-energy physics experiments. Background technique [0002] Lanzhou Heavy Ion Accelerator Cooling Storage Ring (HIRFL-CSR, referred to as CSR) is an expansion project of Lanzhou Heavy Ion Accelerator HIRFL, which is a major national scientific engineering project. CSR is a multi-functional experimental device integrating acceleration, accumulation, cooling, storage, cancer treatment terminal, internal target experiment, external target experiment and high-resolution measurement. It is a double storage ring system consisting of CSRm (main ring) and CSRe (experimental ring) constitutes. The Institute of Modern Physics of the Chinese Academy of Sciences can conduct many high-precision and high-density nuclear physics experiments relying on this large scientific device. [0003] The NIM (Nuclear Instrument Module, nuclear instrument plug-in) el...

Claims

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Application Information

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IPC IPC(8): G05B19/04
Inventor 王彦瑜张建川南钢洋周文雄
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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