Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation

G.D.Alton<SUP>1</SUP>; Y.Kawai<SUP>2</SUP>; Y.Liu<SUP>1</SUP>; O.Tarvainen<SUP>3</SUP>; P.Suominen<SUP>3</SUP>; H.Koivisto<SUP>3</SUP>

Chinese Physics C> 2007, Vol. 31> Issue(S1) : 128-132

Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation

Oak Ridge National Laboratory, Oak Ridge, TN 37831-6372, USA2 AccSys Technology, 1177 A Quarry Lane, Pleasanton, CA 94566, USA3 Department of Physics, P.O. Box 35, FIN-40014, University of Jyvaskyla JYFL, Finland

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Abstract：
As clearly demonstrated at several laboratories, the performances of electron-cyclotron resonance (ECR) ion sources can be enhanced by increasing the physical sizes (volumes) of embedded ECR zones. Enlarged ECR zones have been achieved by engineering the central magnetic field region of these sources so they are uniformly-distributed "volumes" in resonance with single-frequency rf power. Alternatively, the number of ECR {surfaces} in conventional minimum-B geometry sources can be increased by heating their plasmas with multiple, discrete frequency microwave radiation. Broadband rf power offers a simple, low cost and arguably more effective means for increasing the physical sizes of the ECR zones within the latter source type. In this article, theoretical arguments are made in support of the volume effect and the charge-state enhancing effects of broadband microwave radiation (bandwidth: 200MHz) plasma heating are demonstrated by comparing the high-charge-states of Ar ion beams, produced by powering a conventional minimum-B geometry, 6.4GHz ECR ion source, equipped with a biased disk, with those produced by conventional bandwidth (bandwidth: ～1.5MHz) radiation.

References

[1]

. Drentje A G. Rev. Sci. Instrum., 2003, 74: 26312. Alton G D, Smithe D N. Rev. Sci. Instrum., 1994, 65: 7553. Alton G D. Microwave Electron Cyclotron Electron Resonance (ECR) Ion Source with a Large, Uniformly Distributed, Axially Symmetric, ECR Plasma Volume, U.S.Patent 5,506,475 (1996)4. Alton G D. Proc. 14th Int. Conf. Cyclotrons and Their Applications, Cape Town, South Africa, 1995. 3625. Alton G D. Production of Large Resonant Plasma Volumes in Microwave Electron Cyclotron Resonance Ion Sources,U.S. Patent 5,841,237 (1998)6. Alton G D, Kawai Y, LIU Y et al. Proc. 16th Int. Workshop on ECR Ion Sources, AIP CP749, 2004. 1037. Bilheux H. Design And Initial Comparative Evaluation Studies of Conventional "Surface"- And New Concept"Volume"- Type, All Permanent Magnet Electron Cyclotron Resonance (ECR) Ion Source, Doctor of Physics Thesis, Université de Versailles Saint-Quentin-En-Yvelines,France (2003)8. Müller L et al. Proc. 15th Int. Workshop on ECR Ion Sources, Jyvskyl, Finland, 2002. 359. LIU Y, Alton G D, Bilheux H et al. Nucl. Instrum. Methods,2005, B241: 96510. XIE Z Q, Lyneis C M. Rev. Sci. Instrum., 1995, 66: 421811. Alton G D, Meyer F M, LIU Y et al. Rev. Sci. Instrum.,1998, 69: 230512. Vondrasek R C, Scott R, Pardo R C. Rev. Sci. Instrum.,2006, 77: 33713. Koivisto H, Suominen P, Tarvainen O et al. Rev. Sci. Instrum.,2006, 77: 31614. Koivisto H et al. Nukleonika, 2003, 48(Supplement 2): S8115. The Model UFX9850 white-noise generator used in the experiments is a product of Noise/Com, Inc., Parsippany, NJ16. Tarvainen O, Suominen P, Koivisto H. Rev. Sci. Instrum.,2004, 75: 3138

[1]	E.Galutschek¹ , E.Salzborn² , F.Aumayr¹ , HP.Winter¹ . Compact, Low-cost, 14.5 GHz All-permanent Magnet Field ECR Ion Source. Chinese Physics C, 2007, 31(S1): 66-69.
[2]	G.S.Taki¹ , P.R.Sarma¹ , A.G.Drentje² , T.Nakagawa³ , P.K.Ray⁴ , R.K.Bhandari¹ . Observation of Burst Frequency in Extracted ECR Ion Current. Chinese Physics C, 2007, 31(S1): 170-173.
[3]	C.Lyneis , D.Leitner . Concept for a Fourth Generation ECR Ion Source (abstract only). Chinese Physics C, 2007, 31(S1): 237-237.
[4]	J.Ohnishi , T.Nakagawa , Y.Higurashi , M.Kidera , H.Saito , A.Goto . Design of Magnet System for RIKEN Superconducting ECR Ion Source. Chinese Physics C, 2007, 31(S1): 37-40.
[5]	S.Golubev , A.Bokhanov , I.Izotov , S.Razin , A.Sidorov , V.Skalyga , A.Vodopyanov , V.Zorin . Gasdynamic ECR Sources of Multichared Ions (abstract only). Chinese Physics C, 2007, 31(S1): 238-238.
[6]	P.Jardin , C.Canet , J.C.Cornell , M.Dupuis , C.Eleon , J.L.Flambard , G.Gaubert , N.Lecesne , P.Leherissier , F.Lemagnen , R.Leroy , J.Y.Pacquet , M.G.Saint laurent , A.C.C.Villari . ECR Ion Sources for Radioactive Ion Beam Production. Chinese Physics C, 2007, 31(S1): 206-210.
[7]	T.Nakagawa¹ , M.Kidera¹ , Y.Higurasi¹ , J.Ohnishi¹ , T.Kageyama¹ , T.Aihara² , A.Goto¹ , Y.Yano¹ . Magnetic Field Configuration Effect and New ECRISs for RIKEN RIBF Project. Chinese Physics C, 2007, 31(S1): 133-136.
[8]	SHANG Yong , SUN Liang-Ting , MA Bao-Hua , ZHANG Xue-Zhen , FENG Yu-Cheng , CAO Yun , GUO Xiao-Hong , LI Xi-Xia , LI Jin-Yu , LU Wang , WANG Hui , ZHAO HUAN-Yu , LI Jie . The Lanzhou All Permanent ECR Ion Source No.1 -LAPECR1. Chinese Physics C, 2007, 31(S1): 115-117.
[9]	V.V.Bekhterev¹ , S.L.Bogomolov¹ , V.I.Datskov² , V.M.Drobin² , S.N.Dmitriev¹ , A.A.Efremov¹ , V.N.Loginov¹ , A.N.Lebedev¹ , H.Malinowski³ , V.V.Seleznev² , A.Shishov² , G.P.Tsvineva² . The Project of the Superconducting ECR Ion Source DECRIS-SC2. Chinese Physics C, 2007, 31(S1): 23-26.
[10]	P.A.Závodszky , B.Arend;D.Cole , J.DeKamp , M.Doleans , G.Machicoane , F.Marti , P.Miller , J.Moskalik , W.Nurnberger , J.Ottarson , M.Steiner , J.Stetson , J.Vincent , X.Wu , A.Zeller , Q.Zhao , . Status Report of the NSCL/MSU ECR Ion Sources. Chinese Physics C, 2007, 31(S1): 18-22.
[11]	R.Gobin , P-Y.Beauvais , A.Ben Ismail , D.Bogard , O.Delferriere , D.De Menezes , R.Duperrier , Y.Gauthier , F.Harrault , P-A.Leroy , O.Tuske , D.Uriot . ECR Light Ion Sources at CEA/Saclay. Chinese Physics C, 2007, 31(S1): 46-50.
[12]	L.Celona¹ , F.Consoli¹ , S.Barbarino¹ , 2 , G.Ciavola¹ , S.Gammino¹ , F.Maimone³ , D.Mascali¹ , 2 , L.Tumino³ . Impact of Microwave Technology on ECRIS Performances. Chinese Physics C, 2007, 31(S1): 147-151.
[13]	M.Muramatsu¹ , 2 , A.Kitagawa² , Y.Iwata² , K.Yamamoto² , H.Ogawa² , S.Hojo² , Y.Sakamoto² , T.Honma² , W.Takasugi³ , M.Wakaisami³ , Y.Yoshida⁴ , T.Kubo⁵ , Y.Kato⁵ , S.Biri⁶ . Present Status of NIRS ECR Ion Sources. Chinese Physics C, 2007, 31(S1): 60-62.
[14]	SUN Liang-Ting , CAO Yun , FENG Yu-Cheng , LI Jin-Yu , ZHAO Hong-Wei , ZHANG Zi-Min , WANG Hui , MA Bao-Hua , HE Wei , ZHAO HUAN-Yu , GUO Xiao-Hong . Experimental Study on Ion Beam Emittance of ECR Ion Source. Chinese Physics C, 2005, 29(12): 1179-1184.
[15]	SUN Liang-Ting , ZHAO Hong-Wei . Study on Designing of Hexapole Magnet of ECR Ion Source. Chinese Physics C, 2004, 28(6): 644-649.
[16]	ZHANG Zi-Min , ZHAO Hong-Wei , ZHANG Xue-Zhen , GUO Xiao-Hong , LI Xi-Xia , LI Jin-Yu , FENG Yu-Cheng , WANG Hui , MA Bao-Hua , GAO Ji-Yuan , CAO Yun , SUN Liang-Ting , MA Lei . High Charge State ECR Ion Source-LECR3. Chinese Physics C, 2003, 27(10): 914-918.
[17]	ZHANG ZiMin , ZHAO HongWei , ZHAO YuBin , ZHANG XueZhen , GUO XiaoHong , LIU ZhanWen . Production of Metallic Ions Beam in ECR Ion Source. Chinese Physics C, 2000, 24(10): 974-978.
[18]	Zhao Yubin , Liu Zhanwei , Zhao Hongwei , Ding Junzhang , Cao Yun , Zhang Zimin , Zhang Xuezhen , Guo Xiaohong . A Single Charge State ECR Ion Source. Chinese Physics C, 1999, 23(11): 1125-1128.
[19]	Zhao Hongwei , Liu Zhanwen , Zhang Xuezhen , Guo Xiaohong , Gao Jiyuan , Zhang Zimin , Yuan Ping , Zhang Wen , Lei Hailiang , Cao Yun , Feng Yucheng , Li Jinyu , Wang Hui , Ma Baohua , Wang Yifang , Wei Baowen . A 14.5GHz New ECR Ion Source With High Charge State and High Magnetic Field. Chinese Physics C, 1999, 23(7): 717-722.
[20]	XU Yong-Xing , LIU Zhan-Wen , WEI Bao-Wen . Design Calculation of a Improved ECR Ion Source. Chinese Physics C, 1991, 15(4): 343-348.

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G.D.Alton¹, Y.Kawai², Y.Liu¹, O.Tarvainen³, P.Suominen³ and H.Koivisto³. Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation[J]. Chinese Physics C, 2007, 31(S1): 128-132.

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Received: 2007-05-30
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation

Oak Ridge National Laboratory, Oak Ridge, TN 37831-6372, USA2 AccSys Technology, 1177 A Quarry Lane, Pleasanton, CA 94566, USA3 Department of Physics, P.O. Box 35, FIN-40014, University of Jyvaskyla JYFL, Finland

Received Date: 2007-05-30

Accepted Date: 1900-01-01

Available Online: 2007-01-03

Abstract: As clearly demonstrated at several laboratories, the performances of electron-cyclotron resonance (ECR) ion sources can be enhanced by increasing the physical sizes (volumes) of embedded ECR zones. Enlarged ECR zones have been achieved by engineering the central magnetic field region of these sources so they are uniformly-distributed "volumes" in resonance with single-frequency rf power. Alternatively, the number of ECR {surfaces} in conventional minimum-B geometry sources can be increased by heating their plasmas with multiple, discrete frequency microwave radiation. Broadband rf power offers a simple, low cost and arguably more effective means for increasing the physical sizes of the ECR zones within the latter source type. In this article, theoretical arguments are made in support of the volume effect and the charge-state enhancing effects of broadband microwave radiation (bandwidth: 200MHz) plasma heating are demonstrated by comparing the high-charge-states of Ar ion beams, produced by powering a conventional minimum-B geometry, 6.4GHz ECR ion source, equipped with a biased disk, with those produced by conventional bandwidth (bandwidth: ～1.5MHz) radiation.

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Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation

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Enhancing the Performances of Conventional B-Geometry ECR Ion Sources with Broadband Microwave Radiation

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