RUPAC2012 - List of Keywords (positron)

Paper	Title	Other Keywords	Page
MOYCH01	Status of Electron-Positron Collider VEPP-2000	luminosity, lattice, solenoid, booster	15
	Y.M. Shatunov, D.E. Berkaev, A.A. Borisov, A.N. Kirpotin, I. Koop, A.P. Lysenko, E. Perevedentsev, Yu. A. Rogovsky, A.L. Romanov, A.I. Senchenko, P.Yu. Shatunov, D.B. Shwartz, I. Zemlyansky, Yu.M. Zharinov BINP SB RAS, Novosibirsk, Russia I. Nesterenko ORNL, Oak Ridge, Tennessee, USA
	Funding: Work supported by Russian Ministry of Education and Science, Grant of the Novosibirsk region Government 2012 Electron-positron collider VEPP-2000 operates with two detectors SND and CMD-3 at the energy range 500 - 1000 MeV per beam. A number of studies of the round beam operation have been done, in that colliding beam parameter value 0.15 was acheaved. Buster upgrade up to 1 GeV energy is in progress as well as beam transfer chanel from new positron source. These improvements will open way for the collider luminosity enhancement.
	Slides MOYCH01 [2.493 MB]

FRACH05	Prospects for Introduction of Home-Made Equipment for Radionuclide Diagnostics	diagnostics, cyclotron, HOM, photon	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.

FRBOR02	Creating Stronger Accelerator Beams	collider, klystron, linear-collider, luminosity	216
	R.M. Kriske University of Minnesota, Minneapolis, Minnesota, USA
	Recently, at an ILC meeting in Tokyo, the Electron, Anti-Electron Beam strength was said to be about 7 milliamps, for the newest design of the planned International Linear Collider. This was about 1000 times the strength of Colliders in the last decade. This author would like to explore a different way of feeding Anti-Electrons and Electrons into a Collider that should increase the Potential Beam Strength by about 100 times. The question then is how to use Klystrons to maintain an enhanced Beam Strength and whether the larger number of Electrons and Anti-Electrons would cause too much damage to the Accelerator walls. This method should work for Protons and Anti-Protons as well.

TUPPB005	LEPTA Project: Towards Positronium	electron, focusing, gun, injection	316
	A.G. Kobets, E.V. Ahmanova, V.I. Lokhmatov, I.N. Meshkov, V. Pavlov, A.Yu. Rudakov, A.A. Sidorin, S. Yakovenko JINR, Dubna, Moscow Region, Russia M.K. Eseev NAFU, Arkhangelsk, Russia
	The project of the Low Energy Positron Toroidal Accumulator (LEPTA) is under development at JINR. The LEPTA facility is a small positron storage ring equipped with the electron coolin system. The project positron energy is of 2 – 10 keV. The main goal of the facility is to generate an intense flux of positronium atoms – the bound state of electron and positron. Storage ring of LEPTA facility was commissioned in September 2004 and was under development up to now. The positron injector has been constructed in 2005 - 2010, and beam transfer channel – in 2011. By the end of August 2011 experiments on electron and positron injection into the ring have been started. The recent results are presented here.

TUPPB006	Compression and Confinement of Positron Clouds in the Surko Trap of LEPTA Facility	accumulation, resonance, focusing, plasma	319
	M.K. Eseev, A.N. Vititnev NAFU, Arkhangelsk, Russia E.V. Ahmanova, A.G. Kobets, I.N. Meshkov, A.Yu. Rudakov, S. Yakovenko JINR, Dubna, Moscow Region, Russia
	A bunch of positrons confined in a cylindrical Penning-Malmberg trap can be compressed radially by applying a rotating asymmetric dipolar electric field. An explanation of this effect presented in the report is based on the solutions of particle 3D dynamics equations in the fields of the trap taking into account the positron collisions with a neutral buffer gas. The result agrees well with experimental data obtained at the positron injector of LEPTA facility at JINR. Essential feature of the compression process is resonant character of applied rotating field and coincidence its frequency with the frequency of longitudinal positron bouncing in the trap.

TUPPB031	Measurement of Beam Parameters in the VEPP-5 Damping Ring Using Betatron Oscillations Decoherence	damping, betatron, electron, synchrotron	385
	A.V. Petrenko, K.V. Astrelina BINP SB RAS, Novosibirsk, Russia
	Funding: RFBR, grant N 09-02-00594-а The measurement of beam parameters during the commissioning of VEPP-5 Damping Ring is presented. Coherent betatron oscillations of the 380-MeV electron beam were induced by a fast kick. Electrostatic beam position monitors were used to obtain the turn-by-turn transverse beam position data. The form and behaviour of the envelope of oscillations are determined by the beam parameters, chromaticity and nonlinear detuning. Beam emittance and energy spread values have been obtained from the analysis of the beam envelope, nonlinear detuning and chromaticity measurements. The results are in a good agreement with theoretical predictions which were made for calibrated model of the Damping Ring. Independent analysis of betatron spectra envelope have been performed for energy spread measurements as well.

WEPPC044	Positron Annihilation Spectroscopy at LEPTA Facility	electron, background, vacuum, lattice	532
	P. Horodek, I.N. Meshkov JINR/DLNP, Dubna, Moscow region, Russia A.G. Kobets, V.I. Lokhmatov, V. Pavlov, A.Yu. Rudakov, A.A. Sidorin, S. Yakovenko JINR, Dubna, Moscow Region, Russia
	The Low Energy Positron Toroidal Accumulator (LEPTA) at JINR proposed for generation of positronium in flight can be used for positron annihilation spectroscopy (PAS). The positron injector of the LEPTA facility can generate continuous slow positron beam of the intensity up to 1*10⁷ s⁻¹ at the energy in the range of a few eV to 100 keV and width of the spectrum 1-2 eV. The injector is based on radioactive 22Na isotope. The solid neon is used as moderator to generate monochromatic positron beam. It is known that positrons implanted into the matter can localize the defects of structure as vacancies, clusters of vacancies and pores. Observation of gamma quanta (511 keV) from annihilation process allows to obtain the information about the presence, concentration and kind of defects. Nowadays, the experiments with the use of slow positrons beam instead of standard isotopic sources are more popular. The progress in the creation of Doppler broadening of annihilation gamma line spectrometer will be presented here. In the simplest version, it is a set composed of a HpGe detector, a preampliefier, an ampliefier, a MC analyzer and a PC computer. This combination makes possible the observation of changes in 511 keV gamma line, calculation characteristics for PAS parameters and in effect to deduce about defects concentration and their chemical surrounding.

WEPPD030	New Beam Position Monitor Electronics For VEPP-5 Preinjector	electron, linac, background, injection	614
	A.S. Styuf, G.V. Karpov BINP SB RAS, Novosibirsk, Russia
	A new beam position monitor (BPM) electronics has been designed, manufactured and tested in VEPP-5 preinjector. Preinjector BPM system measures position of single electron and positron bunches for each injection cycle. New BPM electronics provides more high sensitivity with respect to existing one developed in 2004. The system can measure the position of bunches with 10⁸ - 10¹⁰ particles per bunch. The resolution of measurements of single bunch is better than 10 mkm for 10¹⁰ particles per bunch. The features of BPM electronics design, the main parameters and results obtained in VEPP-5 preinjector are presented.

Paper

Title

Other Keywords

Page

MOYCH01

Status of Electron-Positron Collider VEPP-2000

luminosity, lattice, solenoid, booster

15

Y.M. Shatunov, D.E. Berkaev, A.A. Borisov, A.N. Kirpotin, I. Koop, A.P. Lysenko, E. Perevedentsev, Yu. A. Rogovsky, A.L. Romanov, A.I. Senchenko, P.Yu. Shatunov, D.B. Shwartz, I. Zemlyansky, Yu.M. Zharinov
BINP SB RAS, Novosibirsk, Russia
I. Nesterenko
ORNL, Oak Ridge, Tennessee, USA

Funding: Work supported by Russian Ministry of Education and Science, Grant of the Novosibirsk region Government 2012
Electron-positron collider VEPP-2000 operates with two detectors SND and CMD-3 at the energy range 500 - 1000 MeV per beam. A number of studies of the round beam operation have been done, in that colliding beam parameter value 0.15 was acheaved. Buster upgrade up to 1 GeV energy is in progress as well as beam transfer chanel from new positron source. These improvements will open way for the collider luminosity enhancement.

Slides MOYCH01 [2.493 MB]

FRACH05

Prospects for Introduction of Home-Made Equipment for Radionuclide Diagnostics

diagnostics, cyclotron, HOM, photon

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.

FRBOR02

Creating Stronger Accelerator Beams

collider, klystron, linear-collider, luminosity

216

R.M. Kriske
University of Minnesota, Minneapolis, Minnesota, USA

Recently, at an ILC meeting in Tokyo, the Electron, Anti-Electron Beam strength was said to be about 7 milliamps, for the newest design of the planned International Linear Collider. This was about 1000 times the strength of Colliders in the last decade. This author would like to explore a different way of feeding Anti-Electrons and Electrons into a Collider that should increase the Potential Beam Strength by about 100 times. The question then is how to use Klystrons to maintain an enhanced Beam Strength and whether the larger number of Electrons and Anti-Electrons would cause too much damage to the Accelerator walls. This method should work for Protons and Anti-Protons as well.

TUPPB005

LEPTA Project: Towards Positronium

electron, focusing, gun, injection

316

A.G. Kobets, E.V. Ahmanova, V.I. Lokhmatov, I.N. Meshkov, V. Pavlov, A.Yu. Rudakov, A.A. Sidorin, S. Yakovenko
JINR, Dubna, Moscow Region, Russia
M.K. Eseev
NAFU, Arkhangelsk, Russia

The project of the Low Energy Positron Toroidal Accumulator (LEPTA) is under development at JINR. The LEPTA facility is a small positron storage ring equipped with the electron coolin system. The project positron energy is of 2 – 10 keV. The main goal of the facility is to generate an intense flux of positronium atoms – the bound state of electron and positron. Storage ring of LEPTA facility was commissioned in September 2004 and was under development up to now. The positron injector has been constructed in 2005 - 2010, and beam transfer channel – in 2011. By the end of August 2011 experiments on electron and positron injection into the ring have been started. The recent results are presented here.

TUPPB006

Compression and Confinement of Positron Clouds in the Surko Trap of LEPTA Facility

accumulation, resonance, focusing, plasma

319

M.K. Eseev, A.N. Vititnev
NAFU, Arkhangelsk, Russia
E.V. Ahmanova, A.G. Kobets, I.N. Meshkov, A.Yu. Rudakov, S. Yakovenko
JINR, Dubna, Moscow Region, Russia

A bunch of positrons confined in a cylindrical Penning-Malmberg trap can be compressed radially by applying a rotating asymmetric dipolar electric field. An explanation of this effect presented in the report is based on the solutions of particle 3D dynamics equations in the fields of the trap taking into account the positron collisions with a neutral buffer gas. The result agrees well with experimental data obtained at the positron injector of LEPTA facility at JINR. Essential feature of the compression process is resonant character of applied rotating field and coincidence its frequency with the frequency of longitudinal positron bouncing in the trap.

TUPPB031

Measurement of Beam Parameters in the VEPP-5 Damping Ring Using Betatron Oscillations Decoherence

damping, betatron, electron, synchrotron

385

A.V. Petrenko, K.V. Astrelina
BINP SB RAS, Novosibirsk, Russia

Funding: RFBR, grant N 09-02-00594-а
The measurement of beam parameters during the commissioning of VEPP-5 Damping Ring is presented. Coherent betatron oscillations of the 380-MeV electron beam were induced by a fast kick. Electrostatic beam position monitors were used to obtain the turn-by-turn transverse beam position data. The form and behaviour of the envelope of oscillations are determined by the beam parameters, chromaticity and nonlinear detuning. Beam emittance and energy spread values have been obtained from the analysis of the beam envelope, nonlinear detuning and chromaticity measurements. The results are in a good agreement with theoretical predictions which were made for calibrated model of the Damping Ring. Independent analysis of betatron spectra envelope have been performed for energy spread measurements as well.

WEPPC044

Positron Annihilation Spectroscopy at LEPTA Facility

electron, background, vacuum, lattice

532

P. Horodek, I.N. Meshkov
JINR/DLNP, Dubna, Moscow region, Russia
A.G. Kobets, V.I. Lokhmatov, V. Pavlov, A.Yu. Rudakov, A.A. Sidorin, S. Yakovenko
JINR, Dubna, Moscow Region, Russia

The Low Energy Positron Toroidal Accumulator (LEPTA) at JINR proposed for generation of positronium in flight can be used for positron annihilation spectroscopy (PAS). The positron injector of the LEPTA facility can generate continuous slow positron beam of the intensity up to 1*10⁷ s⁻¹ at the energy in the range of a few eV to 100 keV and width of the spectrum 1-2 eV. The injector is based on radioactive 22Na isotope. The solid neon is used as moderator to generate monochromatic positron beam. It is known that positrons implanted into the matter can localize the defects of structure as vacancies, clusters of vacancies and pores. Observation of gamma quanta (511 keV) from annihilation process allows to obtain the information about the presence, concentration and kind of defects. Nowadays, the experiments with the use of slow positrons beam instead of standard isotopic sources are more popular. The progress in the creation of Doppler broadening of annihilation gamma line spectrometer will be presented here. In the simplest version, it is a set composed of a HpGe detector, a preampliefier, an ampliefier, a MC analyzer and a PC computer. This combination makes possible the observation of changes in 511 keV gamma line, calculation characteristics for PAS parameters and in effect to deduce about defects concentration and their chemical surrounding.

WEPPD030

New Beam Position Monitor Electronics For VEPP-5 Preinjector

electron, linac, background, injection

614

A.S. Styuf, G.V. Karpov
BINP SB RAS, Novosibirsk, Russia

A new beam position monitor (BPM) electronics has been designed, manufactured and tested in VEPP-5 preinjector. Preinjector BPM system measures position of single electron and positron bunches for each injection cycle. New BPM electronics provides more high sensitivity with respect to existing one developed in 2004. The system can measure the position of bunches with 10⁸ - 10¹⁰ particles per bunch. The resolution of measurements of single bunch is better than 10 mkm for 10¹⁰ particles per bunch. The features of BPM electronics design, the main parameters and results obtained in VEPP-5 preinjector are presented.