RUPAC2012 - List of Keywords (photon)

Paper	Title	Other Keywords	Page
THXCH01	MARS: Fourth Generation X-Ray Light Source Based on Multiturn Energy-Recovery Linac	undulator, radiation, electron, brightness	123
	G.N. Kulipanov, Ya.V. Getmanov, O.A. Shevchenko, A.N. Skrinsky, N. Vinokurov BINP SB RAS, Novosibirsk, Russia V. Korchuganov RRC, Moscow, Russia M.V. Kovalchuk NRC, Moscow, Russia
	In the recent years, Russian government and scientific society have been coming gradually to an understanding the way of development science in Russia. Government have accepted a program of building six mega-science projects, and one of them can be a new 4-th generation x-ray light source based on accelerator-recuperator. Multiturn energy recovery linacs (ERL) looks very promising for making modern synchrotron radiation sources, being less expensive and more flexible. At this time only one multiturn ERL exists. This Novosibirsk ERL operates with two orbits and two free electron lasers based on one linac now. The conception of Multiturn Accelerator-recuperator Radiation Source (MARS) was proposed in 1997 by G.N. Kulipanov, A.N. Skrinsky and N.A. Vinokurov. The use of the ERL with two separated accelerating structures allows to exclude main disadvantages of scheme with one linac, such as the pass of electron bunches with different energies through the same magnetic arcs. The feasibility study for such ERL-based high brightness x-ray source is presented.
	Slides THXCH01 [2.385 MB]

THBOR03	A Possibility of High-Energy Bremsstrahlung Dosimetry by Indium Activation	target, electron, simulation, radiation	155
	V.L. Uvarov, A.N. Dovbnya, V.V. Mytrochenko, V.I. Nikiforov, S.A. Perezhogin, Yu.V. Rogov, V.A. Shevchenko, I.N. Shlyakhov, B.I. Shramenko, A.Eh. Tenishev, A.V. Torgovkin NSC/KIPT, Kharkov, Ukraine
	Development of a number of promising photonuclear technologies is connected with the use of bremsstrahlung sources having end-point energy up to 100 MeV and average radiation power of tens kW. Commonly, such sources are created on the basis of high-current electron linacs. A possibility of bremsstrahlung dosimetry by means of activation of a target from indium of natural composition and absorbed dose determination through the specific activity of the 115mIn isomer is reported. Preliminary study of isomer photoactivation as well as the yield of reference reactions from simultaneously irradiated natural molybdenum was conducted by simulation technique. Joint measurement of the 115mIn, 90Mo, 99Mo activity and absorbed dose in the PMMA standard dosimeters were carried out at LU-10 and LU-40 linacs of NSC KIPT in the electron energy range 8…70 MeV. It was found that, within the range of study, the ratio of the 115mIn specific activity to absorbed dose in the PMMA slightly depends on the bremsstrahlung end-point energy.
	Slides THBOR03 [0.553 MB]

FRACH05	Prospects for Introduction of Home-Made Equipment for Radionuclide Diagnostics	diagnostics, cyclotron, HOM, positron	197
	A.P. Strokach, O.G. Filatov, A.V. Stepanov, M.F. Vorogushin NIIEFA, St. Petersburg, Russia
	Radionuclide diagnostics that allows most diseases to be diagnosed at an early stage has recently been in the focus of attention. The current concept of radionuclide diagnostics advancement takes into account Russian geographic and demographic features and supports the application of the home-made equipment. As a basis, the concept assumes the establishment of regional diagnostic centers at hospitals in each Russian Federal district. In each such a center, a cyclotron of the CC-18/9 model, modules for radiopharmaceuticals' synthesis, single-photon emission (SPECT) and positron (PET) scanners should be installed. The yield of radiopharmaceuticals' production will satisfy the needs of such a center and of up to 30-35 SPECT-"satellites" located in diagnostic departments at hospitals situated up to 1000 km from the center. In future, on the basis of these diagnostic departments, autonomous PET-centers can be established, each equipped with СС-12 cyclotrons, modules for radiopharmaceuticals' synthesis and with 3-4 PET scanners. Implementation of the Federal Targeted Program on the serial production of cyclotrons and SPECT-scanners will allow the examination of population to be increased within 5-6 years up to 1.0-1.2 million people per year.

FRAOR02	Method of State and Alignment Monitoring for Crystal Deflectors of Relativistic Ions	proton, radiation, simulation, controls	200
	A.S. Gogolev, S.R. Uglov TPU, Tomsk, Russia A.M. Taratin JINR, Dubna, Moscow Region, Russia
	Funding: We acknowledge the partial support through the project GK No. 11.519.11.2030 Systems of relativistic particle beam steering based on the use of channeling effect are widely applied in leading research centers of Russia and foreign countries. An operative control is required in the case of using crystal deflectors for the accelerator beam collimation. The control should allow concluding about the state and alignment of the crystal collimator relative to the beam halo. The method of state and alignment monitoring for the crystal deflectors of relativistic ions using coherent X-rays generated by particles in crystals is suggested in this report.

TUPPB040	Angiography X-ray Monochromatic Source Based on Radiation From Crystals	radiation, electron, scattering, laser	406
	T.V. Bondarenko, G.B. Sharkov Siemens LLC, Moscow, Russia Y.A. Bashmakov LPI, Moscow, Russia S.M. Polozov MEPhI, Moscow, Russia
	Nowadays angiography has become one of the most commonly used medical procedures. However the X-ray tubes are mostly used in angiography imaging systems. The problem that encounters in using X-ray tubes is low monochromaticity due to bremsstrahlung while angiography imaging requires quasimonochromatic energy spectrum for better image quality and lower dose rate obtained by the patient. The use of the monocrystaline target at the medical electron LINAC can be one of the possible ways to obtain the monochromatic X-ray radiation. This type of X-ray generator will provide monochromatic radiation with photon energy dependent on the electron beam energy. The X-ray generation mechanism, possibilities of monocrystal usage as an X-ray source for angiography and requirements for beam parameters are discussed.

WEPPD003	Diagnostic Technique with Femtosecond Resolution Applied for FEL Electron Bunches	radiation, electron, undulator, FEL	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.

WEPPD013	Inverse Compton Sources on the Basis of Electron Accelerators with Beam Energy Recovery	electron, cavity, linac, FEL	593
	V.G. Kurakin, P.V. Kurakin LPI, Moscow, Russia
	In inverse Compton Source, photons in Roentgen range originate from visible light laser photons scattered back on electrons with the energy of dozens MeV. Several schemes are suggested in the paper, beam energy recovery conception being the common idea of all of them. The first one is based on synchrotron with flat part of guiding magnetic field. Being accelerated, electron bunch interacts with photon bunch of free electron laser mounted on straight paths of the accelerator, then is decelerated during falling down period of magnetic field cycle, and extracted at low energy from synchrotron to absorb in beam dump. This measure decreases background that originates from bremsstrahlung of lost electrons inherent to classical schema with linear accelerator and storage ring. Two other schemes use superconducting linac that produces relativistic electron bunches which energy is recovered after use, free electron laser (FEL) driven by bunches from linac being used to produce photons bunches for source. In one scheme the same electron bunches are use to drive FEL and inverse Compton Source, while in the other one beam splitting technique is suggested. It is based on beam energy modulation with subsequent separation of successive bunches. The expected self excitation inverse Compton sources parameters are estimated followed by critical issues discussion for all schemes suggested.

Paper

Title

Other Keywords

Page

THXCH01

MARS: Fourth Generation X-Ray Light Source Based on Multiturn Energy-Recovery Linac

undulator, radiation, electron, brightness

123

G.N. Kulipanov, Ya.V. Getmanov, O.A. Shevchenko, A.N. Skrinsky, N. Vinokurov
BINP SB RAS, Novosibirsk, Russia
V. Korchuganov
RRC, Moscow, Russia
M.V. Kovalchuk
NRC, Moscow, Russia

In the recent years, Russian government and scientific society have been coming gradually to an understanding the way of development science in Russia. Government have accepted a program of building six mega-science projects, and one of them can be a new 4-th generation x-ray light source based on accelerator-recuperator. Multiturn energy recovery linacs (ERL) looks very promising for making modern synchrotron radiation sources, being less expensive and more flexible. At this time only one multiturn ERL exists. This Novosibirsk ERL operates with two orbits and two free electron lasers based on one linac now. The conception of Multiturn Accelerator-recuperator Radiation Source (MARS) was proposed in 1997 by G.N. Kulipanov, A.N. Skrinsky and N.A. Vinokurov. The use of the ERL with two separated accelerating structures allows to exclude main disadvantages of scheme with one linac, such as the pass of electron bunches with different energies through the same magnetic arcs. The feasibility study for such ERL-based high brightness x-ray source is presented.

Slides THXCH01 [2.385 MB]

THBOR03

A Possibility of High-Energy Bremsstrahlung Dosimetry by Indium Activation

target, electron, simulation, radiation

155

V.L. Uvarov, A.N. Dovbnya, V.V. Mytrochenko, V.I. Nikiforov, S.A. Perezhogin, Yu.V. Rogov, V.A. Shevchenko, I.N. Shlyakhov, B.I. Shramenko, A.Eh. Tenishev, A.V. Torgovkin
NSC/KIPT, Kharkov, Ukraine

Development of a number of promising photonuclear technologies is connected with the use of bremsstrahlung sources having end-point energy up to 100 MeV and average radiation power of tens kW. Commonly, such sources are created on the basis of high-current electron linacs. A possibility of bremsstrahlung dosimetry by means of activation of a target from indium of natural composition and absorbed dose determination through the specific activity of the 115mIn isomer is reported. Preliminary study of isomer photoactivation as well as the yield of reference reactions from simultaneously irradiated natural molybdenum was conducted by simulation technique. Joint measurement of the 115mIn, 90Mo, 99Mo activity and absorbed dose in the PMMA standard dosimeters were carried out at LU-10 and LU-40 linacs of NSC KIPT in the electron energy range 8…70 MeV. It was found that, within the range of study, the ratio of the 115mIn specific activity to absorbed dose in the PMMA slightly depends on the bremsstrahlung end-point energy.

Slides THBOR03 [0.553 MB]

FRACH05

Prospects for Introduction of Home-Made Equipment for Radionuclide Diagnostics

diagnostics, cyclotron, HOM, positron

197

A.P. Strokach, O.G. Filatov, A.V. Stepanov, M.F. Vorogushin
NIIEFA, St. Petersburg, Russia

Radionuclide diagnostics that allows most diseases to be diagnosed at an early stage has recently been in the focus of attention. The current concept of radionuclide diagnostics advancement takes into account Russian geographic and demographic features and supports the application of the home-made equipment. As a basis, the concept assumes the establishment of regional diagnostic centers at hospitals in each Russian Federal district. In each such a center, a cyclotron of the CC-18/9 model, modules for radiopharmaceuticals' synthesis, single-photon emission (SPECT) and positron (PET) scanners should be installed. The yield of radiopharmaceuticals' production will satisfy the needs of such a center and of up to 30-35 SPECT-"satellites" located in diagnostic departments at hospitals situated up to 1000 km from the center. In future, on the basis of these diagnostic departments, autonomous PET-centers can be established, each equipped with СС-12 cyclotrons, modules for radiopharmaceuticals' synthesis and with 3-4 PET scanners. Implementation of the Federal Targeted Program on the serial production of cyclotrons and SPECT-scanners will allow the examination of population to be increased within 5-6 years up to 1.0-1.2 million people per year.

FRAOR02

Method of State and Alignment Monitoring for Crystal Deflectors of Relativistic Ions

proton, radiation, simulation, controls

200

A.S. Gogolev, S.R. Uglov
TPU, Tomsk, Russia
A.M. Taratin
JINR, Dubna, Moscow Region, Russia

Funding: We acknowledge the partial support through the project GK No. 11.519.11.2030
Systems of relativistic particle beam steering based on the use of channeling effect are widely applied in leading research centers of Russia and foreign countries. An operative control is required in the case of using crystal deflectors for the accelerator beam collimation. The control should allow concluding about the state and alignment of the crystal collimator relative to the beam halo. The method of state and alignment monitoring for the crystal deflectors of relativistic ions using coherent X-rays generated by particles in crystals is suggested in this report.

TUPPB040

Angiography X-ray Monochromatic Source Based on Radiation From Crystals

radiation, electron, scattering, laser

406

T.V. Bondarenko, G.B. Sharkov
Siemens LLC, Moscow, Russia
Y.A. Bashmakov
LPI, Moscow, Russia
S.M. Polozov
MEPhI, Moscow, Russia

Nowadays angiography has become one of the most commonly used medical procedures. However the X-ray tubes are mostly used in angiography imaging systems. The problem that encounters in using X-ray tubes is low monochromaticity due to bremsstrahlung while angiography imaging requires quasimonochromatic energy spectrum for better image quality and lower dose rate obtained by the patient. The use of the monocrystaline target at the medical electron LINAC can be one of the possible ways to obtain the monochromatic X-ray radiation. This type of X-ray generator will provide monochromatic radiation with photon energy dependent on the electron beam energy. The X-ray generation mechanism, possibilities of monocrystal usage as an X-ray source for angiography and requirements for beam parameters are discussed.

WEPPD003

Diagnostic Technique with Femtosecond Resolution Applied for FEL Electron Bunches

radiation, electron, undulator, FEL

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.

WEPPD013

Inverse Compton Sources on the Basis of Electron Accelerators with Beam Energy Recovery

electron, cavity, linac, FEL

593

V.G. Kurakin, P.V. Kurakin
LPI, Moscow, Russia

In inverse Compton Source, photons in Roentgen range originate from visible light laser photons scattered back on electrons with the energy of dozens MeV. Several schemes are suggested in the paper, beam energy recovery conception being the common idea of all of them. The first one is based on synchrotron with flat part of guiding magnetic field. Being accelerated, electron bunch interacts with photon bunch of free electron laser mounted on straight paths of the accelerator, then is decelerated during falling down period of magnetic field cycle, and extracted at low energy from synchrotron to absorb in beam dump. This measure decreases background that originates from bremsstrahlung of lost electrons inherent to classical schema with linear accelerator and storage ring. Two other schemes use superconducting linac that produces relativistic electron bunches which energy is recovered after use, free electron laser (FEL) driven by bunches from linac being used to produce photons bunches for source. In one scheme the same electron bunches are use to drive FEL and inverse Compton Source, while in the other one beam splitting technique is suggested. It is based on beam energy modulation with subsequent separation of successive bunches. The expected self excitation inverse Compton sources parameters are estimated followed by critical issues discussion for all schemes suggested.