CYCLOTRONS2022 - List of Keywords (interface)

Paper	Title	Other Keywords	Page
MOPO008	PLC Based Vacuum Control and Interlock System of the CYCIAE-230 Superconducting Cyclotron Beam Line	controls, vacuum, PLC, cyclotron	70
	M.Z. Hu, H.R. Cai, A.L. He, S.M. Jiang, T.Y. Jiang, J.Y. Liu, P. Liu, Q.Q. Song, Y. Wang, F.D. Yang, Z.G. Yin, T.J. Zhang, B.H. Zhao, X.F. Zhu CIAE, Beijing, People’s Republic of China
	In the CYCIAE-230 superconducting cyclotron beam line, a vacuum system capable of providing a pressure of about 5·10^-4 Pa is required for particle beam transport. In order to provide adequate interlocking to safeguard the vacuum environment and ensure the regular transmission of particles within the beam line, a vacuum control system based on programmable logic controller (PLC) has been developed and integrated into the accelerator monitoring system. The PLC not only interfaces with the quick-acting relay based on interlocking signals but also interfaces with the equipment based on Profibus communication to monitor and control various parameters in the vacuum system, such as pump speed, vacuum pressure reading, valve status, water cooling status, etc. This work presents the structure and interface logic necessary for communication with a series of valves, vacuum gauges, and molecular pump controllers. Also presented is an interface approach between vacuum control and the rest of the accelerator control system.
	Poster MOPO008 [3.051 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO008
About •	Received ※ 27 December 2022 — Revised ※ 26 January 2023 — Accepted ※ 09 February 2023 — Issue date ※ 01 April 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPO011	Upgrading the Beam Diagnostic of the HZB-Cyclotron from an Analogue to a new Digital Platform	cyclotron, FPGA, EPICS, controls	228
	J. Bundesmann, A. Denker, A. Dittwald, T. Fanselow, G. Kourkafas HZB, Berlin, Germany
	The HZB-Cyclotron delivers since a long time reliable beam for experiments and Proton Therapy. Now the old analogue beam diagnostic is outdated and hard to maintain. We developed a digital replacement for the multiplexers for 30 Faraday cups and 12 beam profile monitors. Both use as hardware platform a single-board-controller with FPGA-technology with integrated analogue and digital signals in a client-server architecture. Here we present the new features after more than one year of operation.
	Poster WEPO011 [1.061 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEPO011
About •	Received ※ 30 December 2022 — Revised ※ 17 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 26 March 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO002	Study on Proton Radiation Effect and Self-Repair of SiC-JBS Diodes	radiation, proton, ECR, electron	291
	C.C. Liu, Q. Chen, G. Guo, H.L. Shi, F.Q. Zhang, z. Zhang CIAE, Beijing, People’s Republic of China
	Funding: CNNC "Young Talents" Scientific Research Project (11FY212306000801) In this study, the influence of proton irradiation experiments at 40 MeV and p/cm² on Silicon Carbide Junction Barrier Schottky (SiC-JBS) diodes with stripe cell and hexagonal cell designs was investigated, respectively. Considering the displacement damage effect of SiC-JBS diodes, the experiments was implemented on unbiased SiC-JBS diodes based on 100 MeV high intensity proton cyclotron of China Institute of Atomic Energy. The results show that the current voltage (IV) and capacitive voltage (CV) characteristics of the SiC-JBS diodes are obviously degraded by proton irradiation. After 168 h of room temperature annealing, the forward IV characteristics of the SiC-JBS diodes are basically restored but the reverse leakage current is increased. After 336 h of room temperature annealing, the forward IV characteristic of the diodes is completely restored, but the reserve IV characteristic of the diodes with stripe cell is completely restored. And the CV characteristic is degraded of the two kinds of SiC-JBS diodes permanently, which indicating that room temperature annealing cannot restore the proton radiation displacement damage defects. Combined with Monte Carlo simulations, it is shown that proton irradiation will introduce ionization defects and displacement defects into the SiC-JBS diodes, in which the disappearance of displacement damage defects will eventually lead to the degradation of electrical properties of reverse IV and CV. The analysis of the SiC-JBS diodes structure shows that, without considering the diode materials and process level, the SiC-JBS diode with hexagonal cells is more resistant to proton irradiation displacement damage and has stronger room temperature annealing self-repair ability than the SiC-JBS diodes with stripe cells, even though its chip area is smaller. On the other hand, the SiC-JBS diodes with hexagonal cells can be used preferentially in the radiation environment where there is a large amount of proton.
	Poster THPO002 [5.018 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO002
About •	Received ※ 21 December 2022 — Revised ※ 21 January 2023 — Accepted ※ 14 March 2023 — Issue date ※ 14 April 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO006	Design and Implementation of Robot Adapter in Therapy Control System	controls, proton, status, monitoring	307
	S.M. Jiang, Q.Q. Song, Y. Wang, Z.G. Yin, T.J. Zhang CIAE, Beijing, People’s Republic of China Q. Ran Konica Minolta Zaiqi Medical Products (Shanghai) Co., LTD., Shanghai, People’s Republic of China
	The China Institute of Atomic Energy (CIAE) in Beijing has designed and established a proton therapy facility based on a superconducting cyclotron CYCIAE-230, which can provide proton beams with energy from 70 MeV to 230 MeV for cancer treatment. As the most critical and core part of the proton therapy system, therapy control system (TCS) consists of various components, each of which has corresponding processing services. Motion control of external hardware systems is one of the essential parts of TCS development, and adapters figure prominently in the interaction between services and these external hardware systems. One of the adapters, called robot adapter, is specially developed for the external robotic couch system, which is a vital equipment that directly contacts patients in the whole process of proton therapy. This adapter serves as the connection between TCS and robotic couch for communication and corresponding movement. In this paper, we introduced the communication protocols, design, and characteristics of robot adapter as well as the actual test contents and results with the robotic couch. The test results indicated that the robot adapter can satisfy the needs of couch motion control and status monitoring.
DOI •	reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO006
About •	Received ※ 04 January 2023 — Revised ※ 12 January 2023 — Accepted ※ 31 January 2023 — Issue date ※ 22 March 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPO008

PLC Based Vacuum Control and Interlock System of the CYCIAE-230 Superconducting Cyclotron Beam Line

controls, vacuum, PLC, cyclotron

70

M.Z. Hu, H.R. Cai, A.L. He, S.M. Jiang, T.Y. Jiang, J.Y. Liu, P. Liu, Q.Q. Song, Y. Wang, F.D. Yang, Z.G. Yin, T.J. Zhang, B.H. Zhao, X.F. Zhu
CIAE, Beijing, People’s Republic of China

In the CYCIAE-230 superconducting cyclotron beam line, a vacuum system capable of providing a pressure of about 5·10^-4 Pa is required for particle beam transport. In order to provide adequate interlocking to safeguard the vacuum environment and ensure the regular transmission of particles within the beam line, a vacuum control system based on programmable logic controller (PLC) has been developed and integrated into the accelerator monitoring system. The PLC not only interfaces with the quick-acting relay based on interlocking signals but also interfaces with the equipment based on Profibus communication to monitor and control various parameters in the vacuum system, such as pump speed, vacuum pressure reading, valve status, water cooling status, etc. This work presents the structure and interface logic necessary for communication with a series of valves, vacuum gauges, and molecular pump controllers. Also presented is an interface approach between vacuum control and the rest of the accelerator control system.

Poster MOPO008 [3.051 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO008

About •

Received ※ 27 December 2022 — Revised ※ 26 January 2023 — Accepted ※ 09 February 2023 — Issue date ※ 01 April 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPO011

Upgrading the Beam Diagnostic of the HZB-Cyclotron from an Analogue to a new Digital Platform

cyclotron, FPGA, EPICS, controls

228

J. Bundesmann, A. Denker, A. Dittwald, T. Fanselow, G. Kourkafas
HZB, Berlin, Germany

The HZB-Cyclotron delivers since a long time reliable beam for experiments and Proton Therapy. Now the old analogue beam diagnostic is outdated and hard to maintain. We developed a digital replacement for the multiplexers for 30 Faraday cups and 12 beam profile monitors. Both use as hardware platform a single-board-controller with FPGA-technology with integrated analogue and digital signals in a client-server architecture. Here we present the new features after more than one year of operation.

Poster WEPO011 [1.061 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-WEPO011

About •

Received ※ 30 December 2022 — Revised ※ 17 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 26 March 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO002

Study on Proton Radiation Effect and Self-Repair of SiC-JBS Diodes

radiation, proton, ECR, electron

291

C.C. Liu, Q. Chen, G. Guo, H.L. Shi, F.Q. Zhang, z. Zhang
CIAE, Beijing, People’s Republic of China

Funding: CNNC "Young Talents" Scientific Research Project (11FY212306000801)
In this study, the influence of proton irradiation experiments at 40 MeV and p/cm² on Silicon Carbide Junction Barrier Schottky (SiC-JBS) diodes with stripe cell and hexagonal cell designs was investigated, respectively. Considering the displacement damage effect of SiC-JBS diodes, the experiments was implemented on unbiased SiC-JBS diodes based on 100 MeV high intensity proton cyclotron of China Institute of Atomic Energy. The results show that the current voltage (IV) and capacitive voltage (CV) characteristics of the SiC-JBS diodes are obviously degraded by proton irradiation. After 168 h of room temperature annealing, the forward IV characteristics of the SiC-JBS diodes are basically restored but the reverse leakage current is increased. After 336 h of room temperature annealing, the forward IV characteristic of the diodes is completely restored, but the reserve IV characteristic of the diodes with stripe cell is completely restored. And the CV characteristic is degraded of the two kinds of SiC-JBS diodes permanently, which indicating that room temperature annealing cannot restore the proton radiation displacement damage defects. Combined with Monte Carlo simulations, it is shown that proton irradiation will introduce ionization defects and displacement defects into the SiC-JBS diodes, in which the disappearance of displacement damage defects will eventually lead to the degradation of electrical properties of reverse IV and CV. The analysis of the SiC-JBS diodes structure shows that, without considering the diode materials and process level, the SiC-JBS diode with hexagonal cells is more resistant to proton irradiation displacement damage and has stronger room temperature annealing self-repair ability than the SiC-JBS diodes with stripe cells, even though its chip area is smaller. On the other hand, the SiC-JBS diodes with hexagonal cells can be used preferentially in the radiation environment where there is a large amount of proton.

Poster THPO002 [5.018 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO002

About •

Received ※ 21 December 2022 — Revised ※ 21 January 2023 — Accepted ※ 14 March 2023 — Issue date ※ 14 April 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPO006

Design and Implementation of Robot Adapter in Therapy Control System

controls, proton, status, monitoring

307

S.M. Jiang, Q.Q. Song, Y. Wang, Z.G. Yin, T.J. Zhang
CIAE, Beijing, People’s Republic of China
Q. Ran
Konica Minolta Zaiqi Medical Products (Shanghai) Co., LTD., Shanghai, People’s Republic of China

The China Institute of Atomic Energy (CIAE) in Beijing has designed and established a proton therapy facility based on a superconducting cyclotron CYCIAE-230, which can provide proton beams with energy from 70 MeV to 230 MeV for cancer treatment. As the most critical and core part of the proton therapy system, therapy control system (TCS) consists of various components, each of which has corresponding processing services. Motion control of external hardware systems is one of the essential parts of TCS development, and adapters figure prominently in the interaction between services and these external hardware systems. One of the adapters, called robot adapter, is specially developed for the external robotic couch system, which is a vital equipment that directly contacts patients in the whole process of proton therapy. This adapter serves as the connection between TCS and robotic couch for communication and corresponding movement. In this paper, we introduced the communication protocols, design, and characteristics of robot adapter as well as the actual test contents and results with the robotic couch. The test results indicated that the robot adapter can satisfy the needs of couch motion control and status monitoring.

DOI •

reference for this paper ※ doi:10.18429/JACoW-CYCLOTRONS2022-THPO006

About •

Received ※ 04 January 2023 — Revised ※ 12 January 2023 — Accepted ※ 31 January 2023 — Issue date ※ 22 March 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)