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System for accelerator excitation curve conversion

A technology of excitation curve and accelerator, applied in instruments, measuring magnetic variables, measuring devices, etc., can solve problems such as error-prone, huge workload, complex calculation formula, etc., to achieve the effect of simple installation and use, strong compatibility

Active Publication Date: 2021-10-01
CHINA SPALLATION NEUTRON SOURCE SCI CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The logic of mutual conversion between I and B and the calculation formula are relatively complicated, and there are many calculation coefficients that need to be brought into the formula for calculation. If the EPICS record file is written manually, the workload will be huge and error-prone. If the program logic is changed or Measurement data, EPICS record files need to be completely rewritten

Method used

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  • System for accelerator excitation curve conversion
  • System for accelerator excitation curve conversion
  • System for accelerator excitation curve conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: I / B conversion for DC power supplies

[0025] The DC power supply in this embodiment includes a MEBT (medium bundle flow transmission line), HEBT (high energy beam flow transmission line), and a loop DC power source, and the floating power is removed, because the calculation method of the floating power supply is different. The magnetic field of MEBT and HEBT needs to consider the energy correction. MEBT needs to use the still energy of the negative hydrogen ion, and HEBT needs to use the proton's still energy, in order to make the Java program generated EPICS DB easy to develop, the magnetic field on the ring is also introduced into the energy factor, but Its value is always 1 and does not affect the calculation result.

[0026] Taking DC power Mg: Mg: HC01-PS as an example, I / B conversion logic such as figure 1 Down:

[0027] When B-> i conversion, first set the theoretical magnetic field value B-SET, calculate the actual magnetic field setting value b-set_...

Embodiment 2

[0030] Example 2: I / B conversion for pulsed power supplies with pre-set value

[0031] Pulse power supplies with preset include di / iron, quadrupine, six-pole iron, corrected iron pulse power supply on the synchronous ring. Such power supplies require the conversion of magnetic field preset values ​​and total magnetic field waveform data.

[0032] Taking the pulse power supply R: Mg: Vc01 as an example, the conversion of the preset value is exactly the same as the DC power supply I / B conversion logic of the embodiment, which is no longer described, and the conversion of pulse waveform data is as figure 2 Indicated.

[0033] When B-> i is converted, first, according to the preset current value seti_tmp, the magnetic field waveform data effective length BT-length and the magnetic field waveform data BT-SET are calculated according to the excitation curve fit factor based on the preset magnetic field value B-SET. 200,000 point current waveform data setWavei_RAW, according to the...

Embodiment 3

[0036] Third Embodiment: I BUMP for pulse power with no preset value A / B converter

[0037] Two bump on pulse power synchronizer ring is not the preset value, the same switching pulse and waveform data conversion method according to the second embodiment described, no longer tired here.

[0038] When the present embodiment, during the current magnetic field waveform data is converted into waveform data, the waveform need to set the effective length of BT-Length, reset magnetic field waveform data BT-SET, the order is set because the operation requires the participation of BT-Length and logic programming decisions. No matter which modify the set value, eventually need to reset the magnetic field waveform data BT-SET to take effect.

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PUM

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Abstract

The invention relates to the technical field of accelerators, in particular to a system for accelerator excitation curve conversion. The system is used for converting a physically set magnetic field value into a current value required by a power supply or converting the current value of the power supply into a corresponding magnetic field value by an accelerator, and the system can be applied to a large science device, is low in equipment requirement, is high in compatibility, is simple to install and use, and can achieve the real-time conversion of a DC power supply, a pulse power supply with a preset value, a convex rail pulse power supply without a preset value, and a pulse power supply with a floating power supply at the same time.

Description

Technical field [0001] The present invention relates to the field of accelerator, particularly in a system for accelerator excitation curve transition. Background technique [0002] In the field of accelerator, the movement of the magnetic field in the vacuum pipeline is usually utilized, and the tapered particles are different, and the required magnetic line and magnetic field strength are also different depending on the charged particles. The generation of various magnetic fields is to provide the required current through DC, AC, or pulse power supply as a coil, and the excitation curve is obtained by actual magnetic measurement. The power supply system can provide real-time current value I, while the magnetic field value B is used in the physical shift software, which requires an IOC program to convert I and B in real time to achieve adjustment of the track of charged particles. And monitoring. The design of the IOC program is most important to design runtime database --epics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/10G01R33/00
CPCG01R33/0029G01R33/1253
Inventor 吴煊张玉亮朱鹏何泳成王林薛康佳傅世年
Owner CHINA SPALLATION NEUTRON SOURCE SCI CENT
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