RUPAC2012 - List of Authors (Morozov, N.A.)

Paper

Title

Page

Development of the IBA-JINR Cyclotron C235-V3 for Dimitrovgrad Hospital Center of the Proton Therapy

221

S.A. Kostromin, S. Gurskiy, G.A. Karamysheva, M.Y. Kazarinov, S.A. Korovkin, S.P. Mokrenko, N.A. Morozov, A.G. Olshevsky, V.M. Romanov, E. Samsonov, N.G. Shakun, G. Shirkov, S.G. Shirkov, E. Syresin
JINR, Dubna, Moscow Region, Russia
P. Cahay, Y. Jongen, Y. Paradis
IBA, Louvain-la-Neuve, Belgium

The Dimitrovgrad project, the first Russian hospital center of the proton therapy, was approved in 2010. The JINR-IBA collaboration developed and constructed the C235-V3 proton cyclotron for this center. The assembly and the beam tests of the machine were done in 2011-2012 in special experimental hall in JINR. This cyclotron is a substantially modified version C235-V3 of the IBA C235 serial cyclotron. C235-V3 has the improved extraction system which was constructed and tested. This system allows raise the extraction efficiency up to 77% from 50% in comparison with serial C235. Special mapping system (for Br-component) of the magnetic field was developed and constructed by JINR for the shimming of the Br-field in the middle plane of the cyclotron. Tests with accelerated and extracted beam were performed in August 2012 in JINR. Beam vertical motion in the cyclotron is in the acceptable limits (ΔZbeam≤3 mm). Transmission from r=300mm to 10³⁰ is 72% without beam cutting diaphragms. This allows reduce irradiation dose of the machine elements in comparison with serial C235. Extraction efficiency is 62%. Total efficiency of the machine is 45%. Recommendations are formulated to modify the magnetic system and reduce sensitivity of the machine to the magnetic field imperfections. Most of changes concerned with the increasing of the vertical focusing at the final radii.

Slides FRBCH01 [6.282 MB]

WEPPD002

Simulations and Design of THz Wiggler for 15-40 MeV FEL

569

E. Syresin, S.A. Kostromin, R.S. Makarov, N.A. Morozov, D. Petrov
JINR, Dubna, Moscow Region, Russia

The electromagnetic wiggler is applied for narrow-band THz radiation in the 30 mkm to 9.35 mm wavelength range. This is a planar electromagnetic device with 6 regular periods, each 30 cm long. The end termination pattern structure is +1/4,-3/4,+1,…,- 1,+3/4,-1/4. This structure is more appreciable for compensation of the first and second fields, especially, to provide the small value of of second integral of 500 G*cm². The peak magnetic field is up to 0.356 T, it is defined by large wiggler gap of 10² mm and available capacity of water cooling system of 70 kW. The parameter is varied in the range K=0.5-7.12 corresponding to a field range B=0.025-0.356 T peak field on axis. The wiggler is used in 15-40 MeV at beam currents up to 1.6 mA. The bunch compression scheme allows the whole wavelength range to be covered by super-radiant emission with a sufficient form factor. The wavelength range corresponds to 217 mkm - 9.35 mm at electron energy of 15 MeV, it is equal to 54 mkm - 2.3 mm at electron energy of 30 MeV and it is 30 mkm - 1.33 mm at electron energy of 40 MeV. The 3D Opera simulations and design of THz wiggler is under discussion.

WEPPD003

Diagnostic Technique with Femtosecond Resolution Applied for FEL Electron Bunches

572

E. Syresin, A.Yu. Grebentsov, R.S. Makarov, N.A. Morozov, M.V. Yurkov
JINR, Dubna, Moscow Region, Russia
O.I. Brovko, A.V. Shabunov
JINR/VBLHEP, Moscow, Russia

Diagnostic technique applied for FEL ultrashort electron bunches is developed at JINR-DESY collaboration within the framework of the FLASH and XFEL projects. Photon diagnostics developed at JINR-DESY collaboration for ultrashort electron bunches are based on calorimetric measurements and detection of undulator radiation. The infrared undulator constructed at JINR and installed at FLASH is used for longitudinal bunch shape measurements and for two-color lasing provided by the FIR and VUV undulators. The pump probe experiments with VUV and FIR undulators provide the bunch profile measurements with resolution of several femtosecond. The MCP based radiation detectors are effectively used at FLASH for VUV pulse energy measurements. The new three MCP detectors operated in X-ray range are under development now in JINR for SASE1-SASE 3 XFEL.

Paper	Title	Page
FRBCH01	Development of the IBA-JINR Cyclotron C235-V3 for Dimitrovgrad Hospital Center of the Proton Therapy	221
	S.A. Kostromin, S. Gurskiy, G.A. Karamysheva, M.Y. Kazarinov, S.A. Korovkin, S.P. Mokrenko, N.A. Morozov, A.G. Olshevsky, V.M. Romanov, E. Samsonov, N.G. Shakun, G. Shirkov, S.G. Shirkov, E. Syresin JINR, Dubna, Moscow Region, Russia P. Cahay, Y. Jongen, Y. Paradis IBA, Louvain-la-Neuve, Belgium
	The Dimitrovgrad project, the first Russian hospital center of the proton therapy, was approved in 2010. The JINR-IBA collaboration developed and constructed the C235-V3 proton cyclotron for this center. The assembly and the beam tests of the machine were done in 2011-2012 in special experimental hall in JINR. This cyclotron is a substantially modified version C235-V3 of the IBA C235 serial cyclotron. C235-V3 has the improved extraction system which was constructed and tested. This system allows raise the extraction efficiency up to 77% from 50% in comparison with serial C235. Special mapping system (for Br-component) of the magnetic field was developed and constructed by JINR for the shimming of the Br-field in the middle plane of the cyclotron. Tests with accelerated and extracted beam were performed in August 2012 in JINR. Beam vertical motion in the cyclotron is in the acceptable limits (ΔZbeam≤3 mm). Transmission from r=300mm to 10³⁰ is 72% without beam cutting diaphragms. This allows reduce irradiation dose of the machine elements in comparison with serial C235. Extraction efficiency is 62%. Total efficiency of the machine is 45%. Recommendations are formulated to modify the magnetic system and reduce sensitivity of the machine to the magnetic field imperfections. Most of changes concerned with the increasing of the vertical focusing at the final radii.
	Slides FRBCH01 [6.282 MB]

WEPPD002	Simulations and Design of THz Wiggler for 15-40 MeV FEL	569
	E. Syresin, S.A. Kostromin, R.S. Makarov, N.A. Morozov, D. Petrov JINR, Dubna, Moscow Region, Russia
	The electromagnetic wiggler is applied for narrow-band THz radiation in the 30 mkm to 9.35 mm wavelength range. This is a planar electromagnetic device with 6 regular periods, each 30 cm long. The end termination pattern structure is +1/4,-3/4,+1,…,- 1,+3/4,-1/4. This structure is more appreciable for compensation of the first and second fields, especially, to provide the small value of of second integral of 500 G*cm². The peak magnetic field is up to 0.356 T, it is defined by large wiggler gap of 10² mm and available capacity of water cooling system of 70 kW. The parameter is varied in the range K=0.5-7.12 corresponding to a field range B=0.025-0.356 T peak field on axis. The wiggler is used in 15-40 MeV at beam currents up to 1.6 mA. The bunch compression scheme allows the whole wavelength range to be covered by super-radiant emission with a sufficient form factor. The wavelength range corresponds to 217 mkm - 9.35 mm at electron energy of 15 MeV, it is equal to 54 mkm - 2.3 mm at electron energy of 30 MeV and it is 30 mkm - 1.33 mm at electron energy of 40 MeV. The 3D Opera simulations and design of THz wiggler is under discussion.

WEPPD003	Diagnostic Technique with Femtosecond Resolution Applied for FEL Electron Bunches	572
	E. Syresin, A.Yu. Grebentsov, R.S. Makarov, N.A. Morozov, M.V. Yurkov JINR, Dubna, Moscow Region, Russia O.I. Brovko, A.V. Shabunov JINR/VBLHEP, Moscow, Russia
	Diagnostic technique applied for FEL ultrashort electron bunches is developed at JINR-DESY collaboration within the framework of the FLASH and XFEL projects. Photon diagnostics developed at JINR-DESY collaboration for ultrashort electron bunches are based on calorimetric measurements and detection of undulator radiation. The infrared undulator constructed at JINR and installed at FLASH is used for longitudinal bunch shape measurements and for two-color lasing provided by the FIR and VUV undulators. The pump probe experiments with VUV and FIR undulators provide the bunch profile measurements with resolution of several femtosecond. The MCP based radiation detectors are effectively used at FLASH for VUV pulse energy measurements. The new three MCP detectors operated in X-ray range are under development now in JINR for SASE1-SASE 3 XFEL.