GB/T 41985-2022 in English

VALID

230MeV~250MeV superconducting proton cyclotron

Issued on:2022-10-12
Implemented on:2023-05-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $310.00
$301.00

Standard No:	GB/T 41985-2022
Document status:	VALID
Title in English:	230MeV~250MeV superconducting proton cyclotron
Title in Chinese:	230MeV~250MeV超导质子回旋加速器
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2022-10-12
Implemented on:	2023-05-01
ICS Classification:	27.120.99-Other standards related to nuclear energy
Chinese Classification:	F92-Accelerator for agriculture and industry
Professional Classification:	GB-National Standard
Related Topics:	superconducting superconducting standard accelerator superconducting+ light accelerator proton Baiguang Accelerator Baiguang Accelerator Install Accelerator September Accelerator Domestic accelerator Ultra-fast transmission of light first-class accelerator Acceleration of related substances entropic superconductivity cyclotron proton cyclotron cyclotron accelerator MS plus 23 plus 1 ion beam accelerator proton flow new cyclotron high frequency accelerator cyclotron accelerator Cyclotron particle cyclotron some kind of ion accelerator liquid helium superconducting accelerator molybdenum superconducting instrument proton cyclotron superconducting instrument ion trap accelerator Accelerated version electron cyclotron GaiV Accelerator Accelerator abroad roundabout Electron accelerator titanium window c accelerator micro ion accelerator Acceleration of tiny ions superconducting technology Military Electron Accelerator GB/T 41985 GB/T 41985-2022 accelerator mass spectrometer Accelerated mass spectrometer structure accelerator33222 Superconductor back-propagation system ion cyclotron resonance Characteristics of cyclotron Medical proton accelerator price Accelerator related Cyclotron environmental testing method Specifications related to proton cyclotron

《GB/T 41985-2022230MeV~250MeV超导质子回旋加速器》由TC30（全国核仪器仪表标准化技术委员会）归口，TC30SC1（全国核仪器仪表标准化技术委员会通用核仪器和辐射探测器分会）执行，主管部门为国家标准化管理委员会。

Introduction

Interpretation of core technology innovations

The new liquid helium zero volatility superconducting system achieves continuous operation: the linear new freezing scheme with Rebauco compensation structure is adopted to control the annual loss of liquid helium to less than 0.05%

Technical indicator comparison table

Core parameters	Standard requirements	Measurement method
Beam energy accuracy	±1%	Three-dimensional water tank dose distribution analysis method
Dynamic vacuum degree	1×10^-4 Pa	Continuous monitoring method of cold cathode vacuum gauge
Cooling water quality	0.2-0.5μS/cm	Online conductivity meter closed-loop monitoring

Key points of implementation

Medical equipment calibration example

During the acceptance process of a proton therapy center, it was found that the temperature fluctuation of the freezing platform exceeding ±0.1℃ would cause the beam position to shift by 0.65mm. The readout cycle active feedback strategy was used to complete the target value compensation

Compact transformation of variable frequency drive reduces weight by 67%
All-ceramic true detection and judgment integrated configuration reduces the risk of secondary discharge

Subsystem performance comparison matrix

Subsystem	Key control factors
Subsystem	Temperature tolerance	Magnetic field uniformity	Response time
Superconducting coil assembly	4.2±0.02K	Static residual wave＜0.5%	≥100ms
RF resonant cavity	30±1℃	Axial fluctuation＜2.6%	≤15ns