ECRIS2010 - List of Keywords (vacuum)

Paper	Title	Other Keywords	Page
MOPOT001	Operation of KeiGM for the Carbon Ion Therapy Facility at Gunma University	ion, extraction, heavy-ion, ion-source	40
	M. Muramatsu, S. Hojo, A. Kitagawa NIRS, Chiba-shi, Japan Y. Kijima Mitsubishi Electric Corp., Energy & Public Infrastructure Systems Center, Kobe, Japan H. Miyazaki, K. Sawada, T. Ueno SHI, Ehime, Japan K. Torikai, S. Yamada Gunma University, Heavy-Ion Medical Research Center, Maebashi-Gunma, Japan M. Tsuchiyama, S. Ueda Mitsubishi Electric Corp., Energy Systems Centre, Kobe, Japan
	Carbon-ion radiotherapy has been carried out at Gunma University Heavy Ion Medical Centre (GHMC) since March 2010. A compact ECR ion source for GHMC, so-called KeiGM, supplies C⁴⁺ ions for treatment. A microwave source with the traveling-wave-tube was adopted for KeiGM, with a frequency range and maximum power of 9.75 - 10.25 GHz and 750 W, respectively. KeiGM was operated from March to May 2010 for the clinical trial without any trouble and maintenance. KeiGM supplied the carbon ions from 7:30 in the morning to 0:00 midnight on weekdays. Sometimes it was operated for the beam tuning of accelerator on Saturday and Sunday too. The operation time of KeiGM for two months was about 780 hours. Although the beam intensity decreased by 20% at first, it has been constant for the last two months. The beam intensity of C⁴⁺ was 200 euA at 30 kV extraction in May 2010. The fluctuation of beam intensity was less than 10%. The operation parameters were as follows; the microwave frequency and power were 10.042 GHz and 300 W, respectively. CH4 gas was fed, and the gas flowrate was 0.054 cc/min. The extraction voltage was 30 kV. The repetition frequency and pulse width were 0.36 Hz and 50 msec, respectively. Gunma University has successfully treated the first 12 patients for the clinical trial, thus the Japanese Ministry of Health and Labor Welfare approved GHMC as “advanced medicine”. We will report the operation of KeiGM and the status of their daily treatment.
	Poster MOPOT001 [2.685 MB]

MOPOT013	MONOBOB II : Latest Results of Monocharged Ion Source for SPIRAL2 Project	target, ion, ECRIS, plasma	64
	M. Dubois, O. Bajeat, C. Barue, C. Canet, M. Dupuis, J.L. Flambard, R. Frigot, P. Jardin, C. Leboucher, N. Lecesne, P. Lecomte, P. Lehérissier, F. Lemagnen, L. Maunoury, O. Osmond, J.Y. Pacquet, A. Pichard GANIL, Caen, France
	MONOBOB II is an electron cyclotron resonance ion source (ECRIS) based on a cylindrical symmetry magnetic structure [1]. It has been designed for the SPIRAL2 project in order to ionize radioactive gases coming from the production targets of the Target Ion Source System (TISS). The goal is to build a long-lived ECRIS with the aim of running three months in the hostile environment of the production target while keeping high ionization efficiencies. The Target Ion Source System has been tested using noble gases (He, Ne, Ar, Kr and Xe), with and without target in order to observe the behavior of the source coupled to the target. Currently, the target is made of ~1000 carbon slices, having the same geometry as the final UCx target. So far, its temperature has been limited to 1500°C. Ionization efficiencies and response times of the TISS have been measured versus gases and target temperature [2]. Results should lead to determine the maximum radioactive ion production which can be reasonably expected with the final TISS. The status of this development will be presented.
	Poster MOPOT013 [0.858 MB]

TUPOT005	An ECR Table Plasma Generator	plasma, ECR, ECRIS, ion	124
	R. Rácz, S. Biri ATOMKI, Debrecen, Hungary J. Pálinkás DU, Debrecen, Hungary
	A simple ECR plasma device was built in our lab using the “spare parts” of the ATOMKI ECR ion source. We call it “ECR table plasma generator”. It consists of a relatively big plasma chamber (ID=10 cm, L=40 cm) in a thin NdFeB hexapole magnet with independent vacuum and gas dosing systems. For microwave coupling two low power TWTAs can be applied individually or simultaneously, operating in the 6-18 GHz range. There is no axial magnetic field and there is no extraction. The intended fields of usage of the plasma generator are: A simple, cheap and safe educational working place for students. To prepare, to test or to simulate measurements with electrostatic movable Langmuir probes. The exchange time of the (damaged) probes is very short. To prepare, to test or to simulate plasma diagnostic measurements in the visible light and X-ray ranges using cameras and spectrometers. To cover and/or to modify solid surfaces with plasma particles, including fullerenes. In the paper the technical details of the plasma generator and some preliminary plasma photo results are shown.
	Poster TUPOT005 [0.871 MB]

Paper

Title

Other Keywords

Page

MOPOT001

Operation of KeiGM for the Carbon Ion Therapy Facility at Gunma University

ion, extraction, heavy-ion, ion-source

40

M. Muramatsu, S. Hojo, A. Kitagawa
NIRS, Chiba-shi, Japan
Y. Kijima
Mitsubishi Electric Corp., Energy & Public Infrastructure Systems Center, Kobe, Japan
H. Miyazaki, K. Sawada, T. Ueno
SHI, Ehime, Japan
K. Torikai, S. Yamada
Gunma University, Heavy-Ion Medical Research Center, Maebashi-Gunma, Japan
M. Tsuchiyama, S. Ueda
Mitsubishi Electric Corp., Energy Systems Centre, Kobe, Japan

Carbon-ion radiotherapy has been carried out at Gunma University Heavy Ion Medical Centre (GHMC) since March 2010. A compact ECR ion source for GHMC, so-called KeiGM, supplies C⁴⁺ ions for treatment. A microwave source with the traveling-wave-tube was adopted for KeiGM, with a frequency range and maximum power of 9.75 - 10.25 GHz and 750 W, respectively. KeiGM was operated from March to May 2010 for the clinical trial without any trouble and maintenance. KeiGM supplied the carbon ions from 7:30 in the morning to 0:00 midnight on weekdays. Sometimes it was operated for the beam tuning of accelerator on Saturday and Sunday too. The operation time of KeiGM for two months was about 780 hours. Although the beam intensity decreased by 20% at first, it has been constant for the last two months. The beam intensity of C⁴⁺ was 200 euA at 30 kV extraction in May 2010. The fluctuation of beam intensity was less than 10%. The operation parameters were as follows; the microwave frequency and power were 10.042 GHz and 300 W, respectively. CH4 gas was fed, and the gas flowrate was 0.054 cc/min. The extraction voltage was 30 kV. The repetition frequency and pulse width were 0.36 Hz and 50 msec, respectively. Gunma University has successfully treated the first 12 patients for the clinical trial, thus the Japanese Ministry of Health and Labor Welfare approved GHMC as “advanced medicine”. We will report the operation of KeiGM and the status of their daily treatment.

Poster MOPOT001 [2.685 MB]

MOPOT013

MONOBOB II : Latest Results of Monocharged Ion Source for SPIRAL2 Project

target, ion, ECRIS, plasma

64

M. Dubois, O. Bajeat, C. Barue, C. Canet, M. Dupuis, J.L. Flambard, R. Frigot, P. Jardin, C. Leboucher, N. Lecesne, P. Lecomte, P. Lehérissier, F. Lemagnen, L. Maunoury, O. Osmond, J.Y. Pacquet, A. Pichard
GANIL, Caen, France

MONOBOB II is an electron cyclotron resonance ion source (ECRIS) based on a cylindrical symmetry magnetic structure [1]. It has been designed for the SPIRAL2 project in order to ionize radioactive gases coming from the production targets of the Target Ion Source System (TISS). The goal is to build a long-lived ECRIS with the aim of running three months in the hostile environment of the production target while keeping high ionization efficiencies. The Target Ion Source System has been tested using noble gases (He, Ne, Ar, Kr and Xe), with and without target in order to observe the behavior of the source coupled to the target. Currently, the target is made of ~1000 carbon slices, having the same geometry as the final UCx target. So far, its temperature has been limited to 1500°C. Ionization efficiencies and response times of the TISS have been measured versus gases and target temperature [2]. Results should lead to determine the maximum radioactive ion production which can be reasonably expected with the final TISS. The status of this development will be presented.

Poster MOPOT013 [0.858 MB]

TUPOT005

An ECR Table Plasma Generator

plasma, ECR, ECRIS, ion

124

R. Rácz, S. Biri
ATOMKI, Debrecen, Hungary
J. Pálinkás
DU, Debrecen, Hungary

A simple ECR plasma device was built in our lab using the “spare parts” of the ATOMKI ECR ion source. We call it “ECR table plasma generator”. It consists of a relatively big plasma chamber (ID=10 cm, L=40 cm) in a thin NdFeB hexapole magnet with independent vacuum and gas dosing systems. For microwave coupling two low power TWTAs can be applied individually or simultaneously, operating in the 6-18 GHz range. There is no axial magnetic field and there is no extraction. The intended fields of usage of the plasma generator are:

A simple, cheap and safe educational working place for students.
To prepare, to test or to simulate measurements with electrostatic movable Langmuir probes. The exchange time of the (damaged) probes is very short.
To prepare, to test or to simulate plasma diagnostic measurements in the visible light and X-ray ranges using cameras and spectrometers.
To cover and/or to modify solid surfaces with plasma particles, including fullerenes.

In the paper the technical details of the plasma generator and some preliminary plasma photo results are shown.

Poster TUPOT005 [0.871 MB]