MOPOT —  Poster Session 1   (23-Aug-10   16:10—17:50)

Paper	Title	Page
MOPOT001	Operation of KeiGM for the Carbon Ion Therapy Facility at Gunma University	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]
MOPOT002	Two-Chamber Configuration of the Bio-Nano ECRIS	43
	T. Uchida, H. Minezaki, Y. Yoshida Toyo University, Kawagoe-shi, Saitama, Japan T. Asaji, K. Tanaka Tateyama Machine Co. Ltd., Toyama-shi, Japan S. Biri, R. Rácz ATOMKI, Debrecen, Hungary Y. Kato Osaka University, Graduate School of Engineering, Osaka, Japan A. Kitagawa, M. Muramatsu NIRS, Chiba-shi, Japan
	The Bio-Nano ECRIS was de­signed for new ma­te­ri­als pro­duc­tion on nano-scale [1]. Our main tar­get is the en­do­he­dral fullerene, which have po­ten­tial in med­i­cal care, biotech­nol­o­gy and nan­otech­nol­o­gy. In par­tic­u­lar, iron-en­cap­su­lat­ed fullerene can be ap­plied as a con­trast ma­te­ri­al for mag­net­ic res­o­nance imag­ing or mi­crowave heat ther­a­py. There are sev­er­al promis­ing ap­proach­es to pro­duce the en­do­he­dral fullerenes using an ECRIS. One of them is the ion-ion col­li­sion re­ac­tion of fullerenes and aliens ions to be en­cap­su­lat­ed in the mix­ture plas­ma of them. An­oth­er way is the shoot­ing of ion beam into a pre-pre­pared fullerene layer. In this study, the new de­vice con­fig­u­ra­tion of the Bio-Nano ECRIS is re­port­ed which al­lows the ap­pli­ca­tion of both meth­ods. The plas­ma cham­ber is di­vid­ed into two cham­bers by in­stalling mesh elec­trodes. In the gas in­jec­tion-side 1st cham­ber at 2.45 GHz plas­mas (N2, Ar, He, Fe, ) are pro­duced on the usual way. These ions then are ex­tract­ed to the 2nd cham­ber where an evap­o­ra­tion boat for fullerene is in­stalled. The fullerene neu­trals can be ion­ized (using 10 GHz in the 2nd cham­ber) and are de­posit­ed on a large plas­ma elec­trode where they are con­tin­u­ous­ly ir­ra­di­at­ed by the ions from the 1st cham­ber. The ions pro­duced ei­ther in the 1st or 2nd cham­ber can be in-situ ex­tract­ed and an­a­lyzed. The basic con­cept and the pre­lim­i­nary re­sults using Ar gas and N2 gas plas­mas will be pre­sent­ed. [1] T. Uchida et al., Proc. ECRIS08, Chicago, USA, pp. 27-31 (2008)
	Poster MOPOT002 [6.248 MB]
MOPOT003	Study of Potential Application of Compact ECRIS to Analytical System	46
	M. Kidera RIKEN Nishina Center, Wako, Japan S. Enomoto Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan S. Kishi, Y. Seto National Research Institute of Police Science, Chiba, Japan T. Nagamatsu, T. Tanaka Tokyo University of Science, Faculty of Engineering Division I, Tokyo, Japan K. Takahashi RIKEN, Saitama, Japan
	A place of an ac­tiv­i­ty of ECR ion sources is not only ion source on a heavy ion ac­cel­er­a­tor fa­cil­i­ty. A high­ly ion­iza­tion ef­fi­cien­cy, flex­i­bil­i­ty of ion­ized sam­ple, low con­sump­tion rate in sam­ple, and non-equi­lib­ri­um ECR plas­ma, etc. that a ECR ion source have, may be need­ed in other fields at time. We have de­vel­oped sev­er­al kinds of small ECRISs that have cus­tomized for the anal­y­sis. The pur­pos­es of the anal­y­sis are, pre­cise mea­sure­ment of iso­tope ratio of a metal el­e­ment, de­tec­tion of chem­i­cal war­fare agents, and de­tec­tion of pro­duced molec­u­lar (or frag­ment) ions by the ECR plas­ma. In this work­shop, we will re­port the com­pact ECRISs by a per­ma­nent mag­net type for the an­a­lyt­i­cal sys­tem.
	Poster MOPOT003 [3.320 MB]
MOPOT004	Neutralisation of Accelerated Ions and Detection of Resulting Neutrals	49
	T. Peleikis, L. Panitzsch, M. Stalder IEAP, Kiel, Germany
	At the Uni­ver­si­ty of Kiel, the De­part­ment of Ex­per­i­men­tal and Ap­plied Physics is run­ning an ECR ion source in order to, amongst oth­ers, cal­i­brate space in­stru­ments de­signed to mea­sure solar wind prop­er­ties and suprather­mal par­ti­cles. The ion source is able to pro­duce medi­um to high­ly charged ions which are then ac­cel­er­at­ed by an elec­tro­stat­ic field up to 400keV per charge. In order to ex­tend the par­ti­cle spec­trum from ions to neu­tral atoms we are plan­ning to in­stall a de­vice for the beam par­ti­cle neu­tral­i­sa­tion. It will be used to cal­i­brate in­stru­ments which mea­sure neu­tral par­ti­cles. This de­vice will be lo­cat­ed down­stream from the sec­tor mag­net and the ac­cel­er­a­tion-stage. The sec­tor mag­net sep­a­rates the ions by their m/q ratio. This way the type and the en­er­gy of the ions can be de­ter­mined be­fore the neu­tral­i­sa­tion. Neu­tral­i­sa­tion can be achieved ei­ther by pass­ing the ions through a thin car­bon foil (thick­ness ~88nm) or through a gas­tar­get (thick­ness ~6mm, pres­sure ~0.1mbar) where charge-ex­change occur. The re­main­ing ions be­hind the neu­tralis­er will be sup­pressed by an elec­tro­stat­ic sep­a­ra­tor. Both meth­ods will alter the beam prop­er­ties and lead to a di­ver­gence in en­er­gy and an an­gu­lar spread of the beam. Sim­u­la­tions re­gard­ing these ef­fects will be dis­cussed. The over­all progress on this pro­ject will be pre­sent­ed.
	Poster MOPOT004 [1.776 MB]
MOPOT005	High Current Production with 2.45 GHz ECR Ion Source	50
	A. Coly, T. Lamy, T. Thuillier LPSC, Grenoble Cedex, France G. Gaubert, A.C.C. Villari PANTECHNIK, BAYEUX, France
	A new test bench has been in­stalled at LPSC ded­i­cat­ed to 2.45 GHz ECR Ion Sources char­ac­ter­i­za­tion. Sev­er­al mag­net­ic struc­tures have been test­ed around the same plas­ma cav­i­ty. For ex­am­ple, a cur­rent den­si­ty of 70 mA/cm2 has been mea­sured with the MONO1000 source lent by GANIL. An orig­i­nal ECRIS, named SPEED (for 'Source d'ions à aimants PEr­ma­nents et Ex­trac­tion Dipôlaire'), pre­sent­ing a dipo­lar mag­net­ic field at the ex­trac­tion will also be pre­sent­ed.
	Poster MOPOT005 [3.130 MB]
MOPOT006	Ionization Efficiency of a COMIC Ion Source Equipped With a Quartz Plasma Chamber	51
	P. Suominen, T. Stora CERN, Geneva, Switzerland J. Médard, P. Sortais LPSC, Grenoble, France
	The ISOL­DE fa­cil­i­ty at CERN pro­duces a wide range of ra­dioac­tive ion beams due to a long his­to­ry on tar­get and ion source de­vel­op­ment. Be­cause the ra­dioac­tive iso­tope pro­duc­tion is very lim­it­ed, the most im­por­tant ion source pa­ram­e­ters are high ion­iza­tion ef­fi­cien­cy, se­lec­tiv­i­ty and re­li­able op­er­a­tion under in­tense ra­di­a­tion. Cur­rent­ly used ion sources (main­ly laser (RILIS [1]) and arc dis­charge -type ion sources (VADIS [2]) do not ef­fi­cient­ly ion­ize light noble gases, such as he­li­um, and molecules, such as CO, N2 and NO. These beams were pre­vi­ous­ly planned to be pro­duced with 1+ ECR ion sources op­er­at­ing at 2.45 GHz (for ex­am­ple MIN­I­MONO [3]) but due to new and more ef­fi­cient RF cou­pling of COM­IC-type ion sources [4], we ex­pect to ad­vance in 2.45 GHz ECRIS uti­liza­tion for ra­dioac­tive beam pro­duc­tion. The new COMIC source de­signed by LPSC, Greno­ble in­cor­po­rates spe­cial fea­tures such as a plas­ma cham­ber fully made of quartz (Q-COM­IC). This should pro­vide chem­i­cal­ly good con­di­tions for molec­u­lar ion beam pro­duc­tion, es­pe­cial­ly for car­bon. This paper pre­sents the first ion­iza­tion ef­fi­cien­cy mea­sure­ments of the Q-COM­IC. [1] V.N. Fedosseev, et al, Nucl. Instrum. Methods Phys. Res. B 266/19-20 (2008) 4378. [2] PhD thesis, univ. polyt. Bucarest, L. Penescu (2009). [3] F. Wenander, W. Farabolini, G. Gaubert, P. Jardin, J. Lettry, Nucl. Phys. A, 746 (2004) 659. [4] P. Sortais, T. Lamy, J. Médard, J. Angot, L. Latrasse, and T. Thuillier, Rev. Sci. Instrum. 81 (2010) 02B314.
	Poster MOPOT006 [0.697 MB]
MOPOT008	He2+ Source Based on Penning Discharge with Additional 75 GHz ECR Heating	54
	A. Vodopyanov, S. Golubev, I. Izotov, A. Mansfeld IAP/RAS, Nizhny Novgorod, Russia G. Yushkov Institute of High Current Electronics, Tomsk, Russia
	It is well known that one can reach high av­er­age charge of ions in the ECR plas­ma by in­creas­ing plas­ma den­si­ty and de­creas­ing neu­tral gas pres­sure. ECR dis­charge could be re­al­ized at very low gas pres­sure, but dis­charge start­up takes longer time when gas pres­sure is low. So, it is im­pos­si­ble to re­al­ize ECR dis­charge with lim­it­ed mi­crowave heat­ing pulse du­ra­tion at gas pres­sure lower cer­tain thresh­old value. This prob­lem could be solved with help of trig­ger plas­ma, which should be ig­nit­ed at low gas pres­sure in the trap with high mag­net­ic field. This fore plas­ma could help to de­crease ECR plas­ma start­up time sig­nif­i­cant­ly and make it pos­si­ble to re­al­ize ECR plas­ma at very low pres­sure in pulse op­er­a­tion regime. We sug­gest pen­ning type dis­charge as a trig­ger dis­charge for fast start­up of pulsed ECR plas­ma. Pen­ning type dis­charge glows at as low pres­sure as need­ed. Dis­charge was re­al­ized in the sim­ple mir­ror mag­net­ic trap at pres­sure about 10-5 mbar. He­li­um was used as an op­er­at­ing gas. Sig­nif­i­cant plas­ma den­si­ty (about 1011 cm-3) was ob­tained at the mo­ment just be­fore mi­crowave heat­ing pulse start­ed. Gy­rotron ra­di­a­tion with fre­quen­cy of 75 GHz, mi­crowave power up to 200 kW and pulse du­ra­tion up to 1 ms, was used for plas­ma heat­ing. In the pre­sent work the fully striped he­li­um ions were demon­strat­ed, av­er­age charge of ions in the plas­ma was equal 2. Tem­po­ral evo­lu­tion of charge state dis­tri­bu­tion was in­ves­ti­gat­ed. Charge state dis­tri­bu­tion over he­li­um pres­sure was also stud­ied.
	Poster MOPOT008 [0.535 MB]
MOPOT010	The Light Ion Guide CB-ECRIS Project at the Texas A&M University Cyclotron Institute	55
	G. Tabacaru Texas A&M University, Cyclotron Institute, College Station, USA J. Ärje JYFL, Jyväskylä, Finland D.P. May Texas A&M University Cyclotron Institute, College Station, Texas, USA
	Texas A&M is cur­rent­ly con­fig­ur­ing a scheme for the pro­duc­tion of ra­dioac­tive-ion beams that in­cor­po­rates a light-ion guide (LIG) cou­pled with an ECRIS con­struct­ed for charge-boost­ing (CB-ECRIS). This scheme is part of an up­grade to the Cy­clotron In­sti­tute and is in­tend­ed to pro­duce ra­dioac­tive beams suit­able for in­jec­tion into the K500 su­per­con­duct­ing cy­clotron. The prin­ci­ple of op­er­a­tion is the fol­low­ing: a pri­ma­ry beam from the K150 cy­clotron in­ter­acts with a pro­duc­tion tar­get placed in the gas cell. A con­tin­u­ous flow of he­li­um gas main­tains a con­stant pres­sure of 500 mbar max­i­mum in the cell. Re­coils are ther­mal­ized in the he­li­um buffer gas and eject­ed from the cell with­in the gas flow through a small exit hole. The pos­i­tive­ly charged re­coil ions (1+) are guid­ed into a 2.5 m long, rf-on­ly hexapole and will be trans­port­ed in this man­ner on-ax­is into the CB-ECRIS. The CB-ECRIS op­er­ates at 14.5 GHz and has been spe­cial­ly con­struct­ed by Sci­en­tif­ic So­lu­tions of San Diego, Cal­i­for­nia for charge-boost­ing. An overview of the en­tire pro­ject will be pre­sent­ed with de­tails on dif­fer­ent con­struc­tion phas­es. Spe­cif­ic mea­sure­ments and re­sults will be pre­sent­ed as well as fu­ture de­vel­op­ment plans.
	Poster MOPOT010 [12.413 MB]
MOPOT011	DRAGON: a New 18 GHz RT ECR Ion Source with a Large Plasma Chamber	58
	W. Lu, D. Xie, X.Z. Zhang, H.W. Zhao IMP, Lanzhou, People's Republic of China W. Lu Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China L. Ruan, F.C. Song, B. Xiong, S. Yu, J. Yuan IEE, Beijing, People's Republic of China
	Build­ing a strong ra­di­al mag­net­ic field with a per­ma­nent hexapole mag­net for an ECRIS is ex­treme­ly chal­leng­ing so that the con­ven­tion­al wis­dom re­quires a small but not op­ti­mal plas­ma cham­ber that is typ­i­cal­ly of ID less or equal to 80 mm. A new 18 GHz RT ECR ion source, DRAG­ON, has been de­signed with a large bore per­ma­nent hexapole and source con­struc­tion has begun at IMP. Its plas­ma cham­ber is of ID of 126 mm, the same as that of the su­per­con­duct­ing ion source SE­CRAL, with max­i­mum ra­di­al field strength reach­ing 1.5 Tesla at the plas­ma cham­ber wall. The over­all mag­net­ic strengths of DRAG­ON, with max­i­mum axial fields of 2.7 Tesla at the in­jec­tion and 1.3 Tesla at the ex­trac­tion, are very sim­i­lar to those of SE­CRAL op­er­at­ing at 18 GHz and hope­ful­ly the SE­CRAL per­for­mance. The source solenoid mag­net coils are cooled by an evap­o­ra­tive coolant at about 50 de­gree C. In ad­di­tion, the source is thick­ly in­su­lat­ed for beam ex­trac­tion at 50 kV and high­er volt­age up to 100 kV can be ex­plored. This ar­ti­cle will pre­sent the de­sign de­tails and dis­cus­sions of this new ion source.
	Poster MOPOT011 [0.563 MB]
MOPOT012	Tests of the Versatile Ion Source (VIS) for High Power Proton Beam Production	61
	S. Gammino, G. Castro, L. Celona, G. Ciavola, D. Mascali, R. Miracoli INFN/LNS, Catania, Italy G. Adroit, O. Delferrière, R. Gobin, F. Senée CEA/DSM/IRFU, France F. Maimone GSI, Darmstadt, Germany
	The sources adapt­ed to beam pro­duc­tion for high power pro­ton ac­cel­er­a­tors must obey to the re­quest of high bright­ness, sta­bil­i­ty and re­li­a­bil­i­ty. The Ver­sa­tile Ion Source (VIS) is based on per­ma­nent mag­nets (max­i­mum value around 0.1 T on the cham­ber axis) pro­duc­ing an off-res­o­nance mi­crowave dis­charge. It op­er­ates up to 75 kV with­out a bulky high volt­age plat­form, pro­duc­ing sev­er­al tens of mA of pro­ton beams and monocharged ions. The mi­crowave in­jec­tion sys­tem and the ex­trac­tion elec­trodes ge­om­e­try have been de­signed in order to op­ti­mize the beam bright­ness. More­over, the VIS source en­sures long time op­er­a­tions with­out main­te­nance and high re­li­a­bil­i­ty in order to ful­fil the re­quire­ments of the fu­ture ac­cel­er­a­tors. A de­scrip­tion of the main com­po­nents and of the source per­for­mances will be given. A brief sum­ma­ry of the pos­si­ble op­tions for next de­vel­op­ments of the pro­ject will be also pre­sent­ed, par­tic­u­lar­ly for pulsed mode op­er­a­tions, that are rel­e­vant for some fu­ture pro­jects (e.g. the Eu­ro­pean Spal­la­tion Source of Lund).
MOPOT013	MONOBOB II : Latest Results of Monocharged Ion Source for SPIRAL2 Project	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]
MOPOT014	The Design of 28 GHz ECR Ion Source for the Compact Linear Accelerator in Korea	67
	M. Won, B.S. Lee Korea Basic Science Institute, Busan, Republic of Korea
	The con­struc­tion of a com­pact lin­ear ac­cel­er­a­tor is in progress by Korea Basic Sci­ence In­sti­tute. The main ca­pa­bil­i­ty of this fa­cil­i­ty is the pro­duc­tion of mul­ti­ply ion­ized metal clus­ters and the gen­er­a­tion more in­tense beams of high­ly charged ions for ma­te­ri­al, med­i­cal and nu­cle­ar phys­i­cal re­search. To pro­duce the in­tense beam of high­ly charged ions, we will con­struct an Elec­tron Cy­clotron Res­o­nance Ion Source (ECRIS) using 28 GHz mi­crowaves. For this ECRIS, The de­sign of a su­per­con­duct­ing mag­net, mi­crowave inlet, beam ex­trac­tion and plas­ma cham­ber was com­plet­ed. Also we are con­struct­ing a su­per­con­duc­ing mag­net sys­tem. In this pre­sen­ta­tion, we will re­port the cur­rent sta­tus of de­vel­op­ment of our 28 GHz ECRIS.
	Poster MOPOT014 [3.823 MB]
MOPOT015	The Design Study of Superconducting Magnet System for an Advanced ECR Ion Source	68
	B.S. Lee, M. Won Korea Basic Science Institute, Busan, Republic of Korea
	Funding: This work was supported by KBSI grant (D30300) to M.S.Won The Korea Basic Sci­ence In­sti­tute is de­vel­op­ing a su­per­con­duct­ing mag­net sys­tem for 28 GHz Elec­tron Cy­clotron Res­o­nance Ion Souce (ECRIS). We are in­veti­gat­ing in order to re­al­ize com­pact size, eco­nom­ic op­er­a­tion and gen­er­a­tion of high cur­rent beam. Al­though com­pa­nies and re­searchers have valu­able ex­pe­ri­ence, skill and abil­i­ty in de­sign­ing of su­per­con­duct­ing mag­net for ECRIS, they did not ex­act­ly pro­posed a ex­cel­lent su­per­con­duct­ing mag­net sys­tem for ECRIS be­cause many su­per­con­duct­ing mag­nets were not re­quired. Of course they do if we re­quried many mag­nets for the var­i­ous ap­pli­a­tion of ECRIS. In this pre­sen­ta­tion, we have filed re­ports of for­mer re­seach­er and we have dis­cussed the re­al­iza­tion of ECRIS over 35 GHz.
	Poster MOPOT015 [7.135 MB]
MOPOT016	A Low Power Survey of Radial-Offset Axial Sputtering and High Intensity Uranium Production from Axial Sputtering in SuSI	69
	D.G. Cole, G. Machicoane, T. Ropponen, L.T. Sun, L. Tobos NSCL, East Lansing, Michigan, USA
	Pro­to­type sput­ter­ing hard­ware has been test­ed in the SuSI ion source and early ura­ni­um ion pro­duc­tion is dis­cussed. Also, re­sults of a low power sur­vey of axial sput­ter­ing, to test sput­ter­ing ef­fi­cien­cy at in­cre­men­tal ra­di­al off­sets from on axis po­si­tion, is re­port­ed.
	Poster MOPOT016 [2.672 MB]
MOPOT017	Tests of a New Axial Sputtering Technique in an ECRIS	72
	R.H. Scott, R.C. Pardo, R.C. Vondrasek ANL, Argonne, USA
	Funding: This work is supported by the U.S. Department of Energy, Office of Nuclear Physics, under contract No. DE-AC02-06CH11357. Axial and ra­di­al sput­ter­ing tech­niques have been used over the years to cre­ate beams from an ECRIS at mul­ti­ple ac­cel­er­a­tor fa­cil­i­ties. Op­er­a­tional ex­pe­ri­ence has shown greater beam pro­duc­tion when using the ra­di­al sput­ter­ing method ver­sus axial sput­ter­ing. At Ar­gonne Na­tion­al Lab­o­ra­to­ry, pre­vi­ous work with ra­di­al sput­ter­ing has demon­strat­ed that the po­si­tion of the sput­ter sam­ple rel­a­tive to the plas­ma cham­ber wall in­flu­ences sam­ple drain cur­rent, beam pro­duc­tion and charge state dis­tri­bu­tion. The pos­si­bil­i­ty of the cham­ber wall act­ing as a ground plane which in­flu­ences the sput­ter­ing of ma­te­ri­al has been con­sid­ered, and an at­tempt has been made to mimic this pos­si­ble ground plane ef­fect with a coax­i­al sam­ple in­tro­duced from the in­jec­tion end. Re­sults of these tests will be shown as well as com­par­isons of out­puts using the two meth­ods.
	Poster MOPOT017 [1.506 MB]