MOAO04
VECC, Kolkata, India
TUAO03
VECC, Kolkata, India
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MOAO04 |
Status of EPICS Based Control System for the Cyclotrons in VECC, Kolkata | |
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| At present two cyclotrons are operational in Variable Energy Cyclotron Centre (VECC), namely K130 Room Temperature Cyclotron (RTC) and K500 Superconducting Cyclotron (SCC). Around year 2008, the open source distributed control system framework, EPICS was adopted for the development of RTC control system in VECC after its modernization. The journey was started with EPICS Base 3.14.8, asynDriver R4-4 and MEDM. Initially, the control system for precision magnet power supplies and vacuum system of RTC were implemented using EPICS. Over time, other systems like beam diagnostics, ion source gas flow system, beam line vacuum system of RTC were integrated with EPICS control system. Apart from that, a number of unique EPICS based developments also took place in VECC. The control system of SCC is also upgraded with EPICS over time. Recently some of the cyclotron model and analysis codes are integrated with SCC control system. A MySQL based machine operational database is also developed for storing operational data. The Control System Studio (CSS) is now taken up for developing the operator interface. The evolution of EPICS based control system in VECC over time is discussed in this paper. | ||
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TUAO03 |
Raspberry Pi Based EPICS Embedded Control System for Deflector Conditioning System of Superconducting Cyclotron | |
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| The electrostatic deflectors are used in Superconducting Cyclotron to extract the accelerated beam from the median plane. The electrostatic field is generated by applying high DC voltage between the deflector and the septum which is kept at the ground. During deflector operation, micro-level surface irregularities present on deflector plates may lead to electrical discharge resulting in decrease of voltage between the plates and also damage to the deflector surface. The deflectors are required to be maintained at the required voltage level for continuous beam extraction. The voltage-holding capacity of the deflectors can be enhanced by pre-conditioning them outside the cyclotron. A setup for deflector conditioning is developed in VECC. The setup consists of various equipment such as a high voltage power supply, high current power supply, vacuum system, and various safety interlocks. An EPICS-based supervisory control system is implemented using RaspberryPI for remote monitoring and control of the deflector conditioning setup. The user interface is developed using Phoebus, an upgraded version of CS Studio. The detailed design of the hardware and software and the operational experience of the system is described in this paper. | ||
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Slides TUAO03 [2.072 MB] | |
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