RuPAC2014 - List of Authors (Koshkarev, A.M.)

Paper	Title	Page
THPSC28	Development of Automation System of the Ion Source	380
	A.M. Koshkarev, Y.I. Belchenko, A.N. Kvashnin, A.L. Sanin, P.V. Zubarev BINP SB RAS, Novosibirsk, Russia
	To operate a source of negative hydrogen ions an automatic distributed control system was developed. This system consists of master controller (Slab C8051F120) and a set of peripheral local controllers (PLC) based on microcontroller Slab C8051F350. Using an optical link between PLC and master controller there was created a system resistant to high-voltage breakdowns of the ion source. To control the system, a special programming language has been created. It includes procedures for checking the necessary parameters, setting the value of the physical quantities to simplify the experiment, verifying the lock status and protection. This system provides two programmable timers, as well as procedures in emergency situations, such as: lack of water, poor vacuum. It can be operated in semi-automatic mode: the script asks operator about preferable actions and then it continues actions depending on the response. All scripts are performed by master controller, and this makes system very rapid (for example system response time is 1 ms).

WEPSB17	Development of the Injector for Vacuum Insulated Tandem Accelerator	191
	A.S. Kuznetsov, A.A. Alexander, M.A. Tiunov BINP SB RAS, Novosibirsk, Russia D.A. Kasatov, A.M. Koshkarev NSU, Novosibirsk, Russia
	The Vacuum Insulated Tandem Accelerator is built at the Budker Institute of Nuclear Physics.* The accelerator is designed for development of the concept of accelerator-based boron neutron capture therapy of malignant tumors in the clinic.** In the accelerator the negative hydrogen ions are accelerated by the high voltage electrode potential to the half of required energy, and after conversion of the ions into protons by means of a gas stripping target the protons are accelerated again by the same potential to the full beam energy. A number of innovative ideas posited in the design make it possible to accelerate intense beams in a compact accelerator. Number of investigations revealed weak points of the accelerator injector: unnecessary beam stripping by the residual gas and complexity to improve the vacuum conditions, the influence of the stripping gas to the ion source operation stability. To ensure the beam parameters and reliability of the facility operation required for clinical applications, the new injector is designed based on the ion source with a current up to 15 mA, providing the possibility of preliminary beam acceleration upto 120-200 keV. The paper presents the design of the injector and the results of calculations performed. Aleynik V., Bashkirtsev A., et al. Applied Radiation and Isotopes 88 (2014) 177-179. *Bayanov B., Belov V., et al. Nuclear Instr. and Methods in Physics Research A 413/2-3 (1998) 397-426.

Paper

Title

Page

Development of Automation System of the Ion Source

380

A.M. Koshkarev, Y.I. Belchenko, A.N. Kvashnin, A.L. Sanin, P.V. Zubarev
BINP SB RAS, Novosibirsk, Russia

To operate a source of negative hydrogen ions an automatic distributed control system was developed. This system consists of master controller (Slab C8051F120) and a set of peripheral local controllers (PLC) based on microcontroller Slab C8051F350. Using an optical link between PLC and master controller there was created a system resistant to high-voltage breakdowns of the ion source. To control the system, a special programming language has been created. It includes procedures for checking the necessary parameters, setting the value of the physical quantities to simplify the experiment, verifying the lock status and protection. This system provides two programmable timers, as well as procedures in emergency situations, such as: lack of water, poor vacuum. It can be operated in semi-automatic mode: the script asks operator about preferable actions and then it continues actions depending on the response. All scripts are performed by master controller, and this makes system very rapid (for example system response time is 1 ms).

WEPSB17

Development of the Injector for Vacuum Insulated Tandem Accelerator

191

A.S. Kuznetsov, A.A. Alexander, M.A. Tiunov
BINP SB RAS, Novosibirsk, Russia
D.A. Kasatov, A.M. Koshkarev
NSU, Novosibirsk, Russia

The Vacuum Insulated Tandem Accelerator is built at the Budker Institute of Nuclear Physics.* The accelerator is designed for development of the concept of accelerator-based boron neutron capture therapy of malignant tumors in the clinic.** In the accelerator the negative hydrogen ions are accelerated by the high voltage electrode potential to the half of required energy, and after conversion of the ions into protons by means of a gas stripping target the protons are accelerated again by the same potential to the full beam energy. A number of innovative ideas posited in the design make it possible to accelerate intense beams in a compact accelerator. Number of investigations revealed weak points of the accelerator injector: unnecessary beam stripping by the residual gas and complexity to improve the vacuum conditions, the influence of the stripping gas to the ion source operation stability. To ensure the beam parameters and reliability of the facility operation required for clinical applications, the new injector is designed based on the ion source with a current up to 15 mA, providing the possibility of preliminary beam acceleration upto 120-200 keV. The paper presents the design of the injector and the results of calculations performed.
*Aleynik V., Bashkirtsev A., et al. Applied Radiation and Isotopes 88 (2014) 177-179.
**Bayanov B., Belov V., et al. Nuclear Instr. and Methods in Physics Research A 413/2-3 (1998) 397-426.