PFCPF_AR Ì«væ
\cERL ÌÝ©ç 3 GeV ERL ÌÀ»Ö\´c¾Y KEK_PF §305_0801 Â­Îsåä 1_1
ERL vWFNg`[

iKEK, JAEA, ISSP, UVSOR, JASRI, AISTCLåwC¼Ã®åwCRûåwCïéåwj
ERL væiºv|§305_0801 Â­Îsåä 1_1

PF OiPhoton Factory storage ringjÍ1978NÉæ 2 ¢ãiúËõpêpjúËõ¹ÆµÄÝªnÜèC1983NæèS¤¯pÀ±ªJn³ê½BARiAccumulation RingF»Ý PF_AR: Photon Factory Advanced
RingjÍgX^üËpu[X^[OÆµÄÕË^OiMR: Main RingjÖÌüËÌÔðDÁÄC1987N
æèæ 1 ¢ãiÕËÀ±ÉúËõp¤pjõ¹ÆµÄS¤¯pÀ±ðJnµ½BPF O¨æÑ PF_AR ÍC»
Ìã½x©x»É«\»Ì×Ìü¢ðs¢CÀèxâPxðüã³¹é±ÆÉæÁÄC»ÝàNÔñ4000ÔÌ¤¯pÀ±ðsÁÄ¢éBµ©µÈªçC¼OÆàÝJn©ç30NÈãªoßµC³·ªÉV»ªiÝC¢E
xÅÌúËõ«\üãÌ¬ê©çæèc³êÂÂéB»±ÅCKEK ÅÍC»ÝCKEK Á¬í¤{ÝÌ´`±ZpðîÕÉµÄC¢ãúËõvæÆµÄÌGlM[ñû^ü`Á¬íiEnergy Recovery Linac: ERLjÌ¤J­ðiµÄ¢éB»µÄC»Ì´ÀØíÆµÄÌ cERL (compact ERL) ª KEK Â­ÎLpX ERL J­É¨¢ÄC2012NxàÌr[^]ðÚwµÄÝ³êÄ¢éB±±ÅÍCKEK úËõÀ±{ÝÌ»óCERL ÆÍ½©C
KEK SÌÌ«væÆµÄÚw· ERL õ¹Ì«\ÉdlCERL L[R|[lgJ­Ì»ó¨æÑ cERL ÌÝóµÉÂ¢ÄÉq×éB

1. ßÉ1 ¢ãõ¹ÆµÄS¤¯pªJn³ê½BgX^
ª KEKB ÉÈéÆCüËpOÍsvÆÈèCgXPF OÍ1978NÉæ 2 ¢ãúËõ¹ÆµÄÝªn^ AR ÍúËõêp~ÏO PF_AR ÆÈÁ½B»ÌÜè1)C1983NæèS¤¯pÀ±ªJn³ê½BÝ

ãC2002NÌx»ÉæèC^ó_NgÆffnªêÌG~b^XÍñ460 nmrad Å

Á½ªC1986N

XV³êCr[õ½ª10{ÈãÉLÑC2 Ô¨«ÌüÌáG~b^X»ü¢2)Å128 nmradC1996NÌPxË©ç 1 ú 2 ñÌüËÆÈèCÜ½O¹â³ð[À³¹»ü¢3) Å37 nmrad ÜÅº°çêÄCÙÚ»ÝÌr[éÈÇCõ²ÌÀèxªåÉüP³ê½6)Bµ©µÈª

IveBNXÆÈÁ½BPF OÍÎüd¥Î©çÌúçCåvd¥Î¨æÑd¹CügÁ¬ó´VXeCüËõ ð åÉ  p· é æ 2 ¢ ãú Ë õ¹ Æ µÄ n Ü Á½ËHÉüËVXeÈÇÌn[hEFAÍÙÆñÇÝ

ªCÌWÅ

Á½ FODO \¢ÌÊÉÁ¦C}ü

õ¹ÌpðOñÆµ½ DBA \¢Ì¼üªÝ¯çêÄ¨èC´`±EBO[âAWÌÜÜÅ^]³êÄ¢éBV»ÍÀÉisµÄ¨èCúÌ^]ÅÍ»êçÌ@íÅ½©µçÌÌáªN±

[^CÆµÄÁÄ¢éBr[IveBNXàÝ©çÏíÁÄ¢Íæ[IÈõ¹pàÝ¼ã©çsíêÄ¢½B2005

È¢B»êÉàÖíç¸^]³ê±¯Ä¢éÌÍCúËõ

NÌ¼ü­ü¢ã4)ÉÍCâÍèÆµÄÍÅVÌ

¹ÆµÄÍ¢EÅ 3 ÔÚÉ¢GlM[6.5 GeV Å^]Væ 3 ¢ ã õ ¹Æ ¯ lÉ C ^ó  ~^ Z üú A  W³êCµ©à¢EÅBêÌíVOo`^]ðsÁ[^ÌpªÂ\ÆÈèCéöxPxÈd X üÌÄ¢éOÅ

éÆ¢Md¿l©çÅë¤©B30NpªÀ»µ½BælÌæ©Ì¾Æ»ÌXÌEõÌHv

OÌOÅàC\ªÈõ©Ìd X üÆÔªðÀ±ÌÆÅC30NÔCÙÚ¢ExðÛÅ«Ä¢é PF Â\«ª êÎC±êÜÅÍp¿lª Á½ÆvíêéB

éªC³·ªÉV»Æü¢ÌÀEª©¦Ä«Ä¢

PF É¨¯éáG~b^X»CAR É¨¯éd X üÆVéBêûCPF_AR Í1980NÉgX^üËpu[XOVbgúËõC»êçª«væðl¦éãÅÌOÅ^[O5)ÆµÄÝJn³êC1987NæèCÕËÀ±dvÈL[[hÆÈéBd X üÜÅõªpÂ\ÅCÌ×ÌgX^åOÖÌÁ¬üËÌÔðDÁÄæ

³çÉC»ÝÌ~ÏOÉÎµC´áG~b^XC´

256  úËõ Sept. 2011 Vol.24 No.5
(C) 2011 The Japanese Society for Synchrotron Radiation Research¢ãO^õ¹væÁW ¡ PFCPF_AR Ì«væ\cERL ÌÝ©ç 3 GeV ERL ÌÀ»Ö\

ZpXÌõðìèo·±ÆªÂ\Èõ¹C»ÌóâÆÈ

éB»ÌãCÄÑåü`Á¬íÉßèC¸¬³êCÅãÉ

éÌªGlM[ñû^ü`Á¬íiEnergy Recoveryr[_vÅ~ßçêéBÁ¬µ½r[ð¯¶ü`Á

LINAC: ERLjÅ¬íÅ¸¬·é±ÆÅr[ÌGlM[ðñûµC»êé7,8)BKEK úËõÀ±{ÝÅÍCPF Px»ü¢®¬ãÌ
1997N

ðÌr[ÌÁ¬Ép¢é±ÆªÅ«éÌÅCGl©ç«õ¹ÖÌc_ªnÜèC2003NÉÍr

M[ñû^ü`Á¬íÆ¢¤BÚWÆ·édqr[ÌGo ßÆµ Ä ERL õ¹v æª ­\ ³ê ½9) B »Ì ãC~ b ^  X Í C 10 keV Ì X ü Å ñ Ü À E É B · é 10

2004NxÉÍ~ÏO^õ¹CFEL ðÜß½õ¹Ìä

pmrad öxC½Ïd¬lÍ~ÏOÀÝÌ100 mACÉr¢ª³çÉÚ×ÉsíêC2005NxÉÍ KEK SÌ

ZpX[hàpÓ³êC»ÌêÌpX·Í100 fs

ÆµÄ ERL væðÀÛÉißé±ÆªÙÚ¾mÆÈÁ½B

ÈºªÚWÅ

2006N©çÍïÌIÈ´ÀØíÆµÄÌ cERL ÌÝvÌG~b^Xâo`·ÈÇÌp[^ÍC~Ï

éBÆ±ëÅC~ÏOÅÍCdqr[¤ª KEKCJAEA ðSÆµÄCSÌlXÈ{ÝÌO¤Ìr[õwp[^ÉæÁÄßçêéBÇÌ

Á¬í¤ÒÌ¦ÍÌºÅnßçêC2007NÉ»ÌTæ¤ÈóÔÌdqr[ÅÁÄàC~ÏOÉüËC

OÝvª®¬µC2008N 1 ÉoÅ10) ³ê½B2009~Ï³êêÎCúËãNÆúË¸Ì½tóÔÆÈèC~NÉÍ PF ÌúËõ¹nÍ¨\¤©çÁ¬í¤{ÝÉZÏO¤ÅÜér[i¿ÉÈéB½tóÔÅÉáG

³êCKEK Á¬í{ÝSÌÆµÄ ERL ði·é±ÆÉÈèCERL ±íÅ

é cERL ÌÝ\ènÌJ~b^XðÀ»·é×ÉÍCå«ÈOÉ§Éd¥ÎðÀ×éKvªèCÜ½CÉZpXÍúË½tóÔÅ

E^[z[i»ÝÍ³®É ERL J­ÆüÌjÌü

ÍÙÚsÂ\ÅéB»±ÅCERL ÅÍúË½tðð¯CHyÑwEâ@Ì®õªsíê½B»ÝCP

é½ßÉr[~Ïðsí¸CíÉüË©ç³êéxåd¬dqeâ´`±Á¬ó´ÈÇÌevfÌJ­¤

i¿ÌVµ¢dqr[ÅúËõpªsíêéBüñ

í¹CcERL ÌÝðs¢ÈªçCÀ@ ERL ÌïÌÅúËõðoµÄi¿ª«»µ½r[ÍC¸¬³ê½

Æé11,12)BúËõ¤{ÝÆãÉ_vÅ~ßçêCÄxp³êé±ÆÍÈ¢B½¾µÄÌ KEK ÌðÍCíÉ¢EÅÌÀ±ªs¦élÈµCü`Á¬íðgÁÄ½Ïd¬100 mA ðíÉ·éIÈÚ×Ývðnß½iKÅ

Å«\Ìõ¹Á¬íðÝµC»±©ç­¶·éÅæ[×ÉÍCGlM[ñû·é±ÆªK{ÆÈéBá¦ÎCÌúËõð[U[Éµ±¯é±ÆÅéBKEK ªGlM[ 3 GeV Å½Ïd¬100 mA Ìr[ðìé×·¢ÔJ­ð±¯Ä«½´`±Á¬íZpªWµÄ¢éÉÍCr[É¼Ú^¦çêéGlM[¾¯Åà300

ERL ÍCÜ³É KEK Ìg½Æ»ÌÚIÉÓ³íµ¢ÆMW ÆÈèCÜ½C±Ìr[ð¸¬ÈµÉ~ßéÉÍC

¾¦é¾ë¤B

300 MW ðMÆµÄzû·ér[_vÆúËüÕÁ
ªKvÆÈéBKEK ÌdqzdqüËíÅàr[É¼

2. ERL ÆÍÚ^¦çêéGlM[ªS WCCtðÜÞSÁ
ïdÍª MW Åµ©È¢±Æðl¦éÆC GeVCERL Íü`Á¬íðîÉµ½O^ÌÁ¬íÅCSÌÍüËCåü`Á¬íCüñCr[_v©çÈéiFig. 1jBüËÅìçê½´i¿Ìdqr[ÍCåü`Á¬íÅÁ¬³êCüñÅúËõpªsíê

Fig. 1

100 mA Ìdqr[ðA±IÉ¶¬·éãÅCGlM[ñû·é±Æª¢©Édv©ªí©éB
ERL ÅÍCüËÅ´i¿Ìr[ðìèo·±ÆªâÎðÅ

éB~ÏOÆÙÈèCdqr[Í½Concept of ERL.

úËõ Sept. 2011 Vol.24 No.5  257

tóÔÉÍÈçÈ¢ÌÅCüËÅÌdqr[Ìi¿ªdqeÆÀÔ ERL ÌÅdvÛèÌêÂÅéBERL SÌÌr[i¿ÌãÀðè·éBÜ½C~Ï³ÄCü`Á¬íÅÍêÊÉCGlM[ÅKi»µ½

OÌêÍüËíÅÍÈ­C~ÏOÌeBXÝv

Ki»G~b^XªÛ¶ÊÆÈéBr[ªÁ¬³êé

ªr[i¿ðßéªCERL ÅÍüñÌÝvÍr[ÆCr[ÌisûüÌ^®ÊÌÝªå·é×Cr[i¿Ì«»ð@½Éh®©ªÅ_ÅÌ­UpÍ¬³­ÈèCr[Ì©RG~b^XÍ¸­èCo`³kðÊÉ·êÎCüñÅr[i¿ªüã·é±ÆÍÙÆñ

·éB»êðfM¸Æ¢¤BÀÛÌr[TCYâõÌ

ÇÈ¢BÅàã¬ÌdqeÅÍCAÉ©çoédqÌG~«¿ðßé©RG~b^XÍC´Î_IÈÌæÅ

b^Xª¬³¢±ÆªKvÅC»Ì×ÉÍMG~b^ÍCr[GlM[ÉtäáµÄ¸­µÄä­Bá¦

Xª¬³¢õAÉdqeªKµÄ¢éBdqr[ÌG~Î Cd qð 5 GeV Ü ÅÁ ¬µ½ Ì ©R G~ b^ X

b^XªáGlM[ÌæÅ«»·é´öÍCdq¯mÍC¯¶dqÌ 1 GeV ÌÌlÌ20÷É¸èCõwÖÌN[½­ÍÅÉàæéªCr[TCYÍñ44÷ÜÅ¬³­ÈéBéóÔd×øÊÅ

èC»êÍdqÌGlM[ª­ÈéÙÇÎ_IøÊÅá¸³êéBåü`Á¬íÅÁ¬³ê½r[ÍCüñÅúËõð

]ÁÄCdqeÅAÉ©çdqðø«o·d³Í¢ûªoµÈªçCÄÑåü`Á¬íüèûÜÅß³êéB´áæ¢Bd³Cåd¬C·õ½CáG~b^XÌõdq

G~b^XCÉZo`ÈÇÌr[i¿ðÛ·é±eÌJ­Í ERL ÌÅdve[}ÌêÂÅ

éBóÔd×øÊð}¦é×ÉÍCdqÍÅ«é¾¯­CÆªüñÌÝvÌÚWÆÈéBÁÉCpX·ªZ¢åéöxÌd×Ìo`©çÍCo`·Æ¯¶g·æÜÅ·g·¤GlM[ÜÅÁ¬µ½ûªæ¢B]ÁÄCdqe¼ãÉ

Å­¢Rq[gÈúËõiCSRjªoéªC»êÍÁ¬ó´ðÝu·éªC»±ÅÁ¬ÉgíêéGlM[o`Ìæª¤ÌdqðÁ¬Cãö¤ð¸¬·élÈr[Í¸¬ÉæÁÄñû³êé±ÆÍÈ­Cr[_vÅMsÀè«Æ¿È­«ð·éBCSR ÉæéGlM[

ÉÏ¦çêéB]ÁÄCüËÌÁ¬ó´ÉÍCr[ð

LªèÌåÍCG~b^XyÑo`·ÈÇÌr[Á¬·é×ÉKvÈSÄÌGlM[ðíÉ^¦éKvªi¿Ì«»ðµ­ªCCSR ÌøÊÍWcI©ÂnIÅéBá¦ÎC100 mA Ìr[ð10 MV Ìd³ÅÁ¬·éÈçC»êÍ 1 MW ÅéBüËÌó´Ì×ÉCé×Cr[õwIÈÝvÌÅK»ÅCªÂ\ÅéöxÌ}§

éB´PxÜ½ÍÉZpXÌõðo¹éÆñíÉå«È RF p[ÉÏ¦çêé´`± RF ó´yÑ¢¤_ð¯ÎC½Ïd¬lâõÌJèÔµüúCr[RF íªJ­³êÄ¢éBüËÅÍCdqÍ´ÎCzuâ¯Ég¦é[U[ÈÇÉÂ¢ÄÍC_IÅÍÈ¢×CGlM[·Í¬x·ÆÈèCBÔ

ERL Íù¶Ì~ÏOÆÙÆñÇ¯¶ÅéB´P·ÆÈéBã¬ªÌë·Íº¬ÉÍgå³êÄ`À·é

xâÉZpXð¶©µ½Åæ[ÌÀ±©çCõ©ªK

×CüËÍÅà¸§ÉìçÈ¯êÎÈçÈ¢ªÅ éBvÈÎüd¥Î[U[ÜÅCL¢[U[wÌ¯üË©ç¬ðÊèCr[ÍüñÉüéB¬

pªÂ\Å

éB

ÍüË©çÌáGlM[Ìr[ÆCüñÅgpåÁ¬íÉßÁÄ«½r[ÍC¸¬CGlM[ñûãÌGlM[Ìr[ð¬³¹Cåü`Á¬íÖ±³ê½ãÉæèoµÅr[_vÖÆ±©êéB­ªÅ

MW Ìr[_vÍMIÉàúËüIÉàåKÍÈà

éB^]ðÉæÁÄÉáGlM[Ìr[éöxÌÌÆÈéBÜ½CgpÏÝÌr[Ír[i¿Ì«»ª_î«ªKvÆÈéêûCóÔd×øÊâÈ°çêé±ÆÌGlM[äªÏíéÂ\«ªéÌÅCµ¢±Æª\z³êé×Cr[ð«¿ñÆ¹¸È­_ÉæÁÄ­¶·éRq[gúËõÌøÊð}¦Èª

vÖ±­±ÆªCæèoµâr[_vÌÝvÌçC³ÌÈ¢d¥ÎzuðÀ»µÈ¯êÎ¢¯È¢BÚWÆÈéB~ÏOÌêC~ÏÉ¸íê½r[åü`Á¬íÅr[ÍúËõpÌ×ÉKvÈGlM[ÜÅÁ¬³êéB±ÌGlM[Íñû³êé×Cå
ü`Á¬íÌó´ÉÎµÄÍCåp[Ì RF nÍsvÅ
éBêûCr[sÀè«Ì}§ÍñíÉdvÅC»ÌÍüËÉæÁÄp¬«³êéÜÅC¸íê½ÜÜÅéB

Ü½CüËÍÊíC Hz ÆCñíÉJèÔµªx¢BêûCERL ÌêCRF üg1.3 GHz É¯úµÄCSd¬ªÌd×Ìo`ªíÉüË³êÄ¢éB»Ì×Cé

×É²gÌ¸âCÁ¬ÇàÌr[õwIÈÅK»ªªÅ]ÜÊr[¹¸ªN±ènßéÆCGlM[ñûKvÆÈéBÁ¬ùzÌÁ¬Çðg¦ÎÁ¬ó´ÌÍø¦ÌáºªeÍÍàÅéÀèC¯¶êÉVµ¢¸ç¹éªCåd¬ÅÌr[sÀè«Ì}§ªïµ­Èr[ª½è±¯éB±êÍCÙÆñÇr[nÚÆ¾

éÆÆàÉCâ@ÖÌ×Íå·éBÜ½Có´ÌiÁÄàæ­CMICúËüIÉñíÉë¯Å¿ÉæÁÄàCÁ¬d³ÉæÁÄâ@×ªå«­Ï®

ñC~ÏOÉ¨¢ÄàC]ÜÊr[XÍ^óÌ·éB½Ìó´ð¶Yµ½ÌêèÌi¿ÌÛC

éBà¿ë

é

â´`±óÔÌNG`ðµ­×CÁÉåd¬CGlöxÌi¿ÌÎçÂ«ÉÎ·éÀS«ÌmÛC^¦çê½

M[Ì~ÏOÅÍ½dÉàÛìÎôªu¶çêÄ¢éBâ@eÊÅ\ªÈÁ¬ùzðB¬Å«ÄCr[sÀè

ERL ÅÍC~ÏOÆä×éÆ¡©É­ÊÌr[¹«ðãNµÈ¢Àè©ÂÀ¿È´`±Á¬ó´ÌJ­ªC¸ÉÎµÄàC«¿ñÆÎôðu¶é±ÆªdvÆÈéB

258  úËõ Sept. 2011 Vol.24 No.5

¢ãO^õ¹væÁW ¡ PFCPF_AR Ì«væ\cERL ÌÝ©ç 3 GeV ERL ÌÀ»Ö\

Fig. 2 Conceptual design of 3 GeV class ERL.

3. ÚWÆ·é ERL «õ¹ÌÝvóµ
2003NÉÚWÆµ½ ERL ÍCåü`Á¬íÌ·³ñ
400 mCÁ¬ùzÍÅåñ20 MV/mCüñÍ 2 [vÅC2 ñÌÁ¬ãÌr[GlM[ÍÅå 5 GeVCdqr[ÌG~b^XÍ½¼Æà10 pmrad ÅÁ½B±êÍGlM[10 keVCg·ñ 1 Å Ìd X üª}üõ¹Ì 1 õÆµÄñÜÀEÆÈélÉßçê½B
ÉZo`[hÅÍo`·Í100 fs ÈºCÝïÍñ
800­~ÈãÆ©Ïçê½B\ZIÉåKÍÈvæÍñ»ÀIÅÀsª¢ïÅé×Cù¶Ì}üõ¹«\ð¼è·éÆd X üÌæÌ«\Íá±¿éªC«IÈ}üõ
¹J­ÉúÒµC\ZKÍ300­NXC3 GeVC1 [vÌ ERL væÉÏX³ê½iFig. 2jB±ÌÏXÉº¢C
dqr[ÌG~b^XÍ5/3{Ìñ17 pmradCT^I
Èr[TCYÍ1.3{ÆÈéB}üõ¹ÉÎµÄÍCFig. 3

Typical undulator spectra for 3 GeV ERL. (For calculation,
undulator period lu 18 mm, total pole length L 30 m andmaximum K 1.99 (hard X­ray undulator), and undulator
period lu 120 mm, total pole length L 30 m and maximum K
2.50 (soft X­ray undulator).)ég·Ìõð¯¶Å­¶³¹é×ÉÍüú·ðZ­µÈ¯êÎ¢¯È¢ªCù¶ÌZpÅÍüú·Æ¥êÌ­³
é×CX üÌæÅÍõÌpªKvÆÅÍCíÉVµ¢dqr[ªüËí©ç³ê±¯éÈéBù¶ÌZpÌÝðgÝí¹½êC3 GeV N

×Cdqr[ÉO©çÛ®ðÁ¦ÄàCÌr[ÉÆÉÀEªXÅÍÊíÌî X ü©ç X üÌæÅCAW[^õðªcçÈ¢B±Ìæ¤ÈÁ¥ð©·ÆCERL ÍC1

ÆµÄ1022 I[_[ÌPxªmÛÅ«éiFig. 3jB½¾

MHz_1 GHz öxÌärIJèÔµügÅC¤Uí^µCg·ÂÏæÉ§ÀªÂ­iMbvðÏ¦½êÉX

XFEL (XFEL_O)13), Self­seeded XFEL, Echo­enabledyNgªêsA±ÆÈéjªC_Á½g·Å1023 ä

Harmonic Generation (EEHG)14)ÈÇCÔRq[XÌPxðmÛ·é±ÆàÅ«éµC}üõ¹âdqeJ­ðõ¦½æèæ[IÈõ¹ÖÆ­WÂ\ÅªißÎC³çÉãÌPxðÚw·±ÆàÂ\Å

EEHG Í Cdq r[ Æ [U[ õÆ ÌÝ ìp ÉæéB»ÝC»ÌÚ×ÈÝvÆ\ZÌÏÝã°ªsíêÄ¢éB
ERL ÍO^õ¹Å

èC30{öxÌ}üõ¹r[

C¨æÑÎüd¥Îr[Cðp·é±ÆªéBá¦ÎèCAgbI[_[Ìt[GÀE X üpXð­¶³¹éû@ÅéBÜ½CGlM[ñûðsíÈ¢ 2 ñÁ ¬  [ h ð p ¢ ê Î C 6 GeV Ì d q r [  ð g Á ÄÅ«éB·Èí¿C]Ì~ÏOÅsíêÄ«½lX

XFEL_O ªÀ»Â\ÅÈÄpIÈªèðCSÄÌ[U[ªx»µÂÂp±µ±êçÌõ¹J­ÌÂ\«ÉÂ¢Äà¢ðißÄ¢éBÄs¤±ÆªÂ\ÅéB»ÝCERL ðx[XÆµ½éBÜ½êûÅCERL Íü`Á¬íðîÕÆ·éæ[IÈr[«\ðÁÄ¨èCæ 3

4. cERL ÌvfJ­yÑÝÌ»ó¢ãõ¹ðãñéñÜÀECóÔRq[XC100tFgbÌZpXªèªÀ»Â\Å

éB³çÉCERL

2012NxÌr[^]JnðÚwµCERL Ì´ÀúËõ Sept. 2011 Vol.24 No.5  259

Fig. 4

Table 1

Layout of cERL.

Main parameters of cERL

JAEA ÅÍC500 kV dqe 1 @ÌJ­ªsíêÄ¨èCK[hOdÉðÝuµ½ª^Z~bNÁ¬ÇParameters of cERL
Beam energy

35_245 MeV

Injection energy
Average current

5 MeV
10_100 mA

Acc. gradient (main linac)
Normalized emittance

15 MV/m0.1_1 mmÉmrad

Bunch length (rms)

1_3 ps (usual)`100 fs (with B.C.)

WOðiß2011N 2 ÜÅÉ466 kV ÜÅÌd³óÁ

RF frequency

1.3 GHzªsíê½B»ÝÍ500 kV óÁÉü¯½RfBVjðp¢C2009N11ÉJ\[hT|[gdÉð}üµ½
óÔÅC¢EÅßÄ500 kV Ìd³óÁÉ¬÷µ½B»ÌãCJ\[hdÉðÝuµC2010N10ÉJ\[hd³300 kV É¨¢Ä5.7 mA Ìr[øoµðmFãCG[OªißçêÄ¢éB
KEK ÅÍC2 @ÌJ­ª2009NæèißçêÄ¢éBØíÅé cERLiFig. 4jª KEK Â­ÎLpXÌERL J­ÅÝÅéBåvÈp[^ð Table 1

2 @ÍC1 @Å¾çê½ÊðtB[hobNµÂÂCÁÉJ\[hõ½âèÉ¼·éÉ^ó¶¬ÉÍ_

É¦·BÅIIÉÍ 2 [vÌüñÆC9 ZÌåÁ¬ðu¢½§ã°ðsÁÄ¨èCRûåw¨æÑY¤³Íó´ 8 {ðp¢C245 MeV ÜÅÁ¬·é±ÆªÚWÅ^óW¤ºÌ¦ÍÌàÆCdqeÌe\¬vfÌKX

éªC2012NxÉÍüñÍ 1 [vCåÁ¬ó´ 2 {úo¬xÌ]¿ÈçÑÉ´`É^óÌæÅÌårCn

Å35 MeV Å^]ðJn·é\èÅéB¡ãC½Ïd¬ÌrC¬x]¿ð2010NæèæègñÅ¢éB»óÅ

lðÜß½ÅIÚWÉB·éÜÅÉÍCâ@eÊÌgÍCgã°½ÀÛÌuÅSKXúo¬xª1.0~10|10£CåÁ¬ó´WPaÞm3 /s ÆñíÉá­}¦çêÄ¢é±ÆðmFµCåñÌÝªKvÅ[ÌÇÁCüËÌ­CO¤üéBrCnÌx[JuNCI|vÅÍCHe ¨æÑ H2
ð­eíKXÉÂ¢ÄÉ^óÂ«ºÉ¨¢Äà\ª

dqe15_20)¢rC\ÍðL·é±ÆðmFµÄ¢éBÜ½C2011N

ÅÌÀØ@ÆµÄCÁ¬d³500 kVCr[d¬10

xæè600 kV ³d¹ðp¢½G[WOðJnµC

mA ÌdqeJ­ð JAEACKEKCLåwC¼Ã®å

2012NxÉÉ^óÆÈÁ½dqeæèr[ðø«wª¤¯ÅißÄ¨èC1 @¨æÑ 2 @ÌJ­ª»ê

o·\èÆÈÁÄ¢éB

¼ê JAEA ¨æÑ KEK ÉÄißçêÄ¢éB

260  úËõ Sept. 2011 Vol.24 No.5

LåwÅÍC¬^Ì¼¬dq¹uðJ­ÉpµÄ¢ãO^õ¹væÁW ¡ PFCPF_AR Ì«væ\cERL ÌÝ©ç 3 GeV ERL ÌÀ»Ö\

NEA \ÊÌõ½]¿¨æÑu©çÌKXúo¬xÌ]Xðá­}¦é½ßÌõªißçêÄ¢éB¿ÉÂ¢ÄÌ±ªsíêÄ¢éB
J\[hJ­¨æÑ]¿ÉÖµÄÍ KEK É¨¢ÄC¼üËó´21_25)Ã®åwÉÄJ­³ê½200 kV dqeðp¢½J\[hü Ë  ó ´ Í C cERL Å Í C ñ 10 mA Ì d q r [ ]¿±ª2010N12æèsíêÄ¢éBG~b^XðCGlM[ñ500 keV ©ç 5 MeV ÜÅÁ¬·é±Æ

Ìg·ÉQE Ë¶«â«wúÌÙÈéJ\[hÌªÚWÅéªC»ÝCERL À@ÅKvÈCÅå100 mA«C[Ug·Æ«ÌÖWCJ\[hõ½±ÈÇÌ

Ìdqr[ð10 MeV ÜÅÁ¬·éÚWÉCe\¬vf½­ÌJ\[h]¿ªèªÂ\ÅiÌJ­ðsÁÄ¢éB3 äÌ 2 Z´`±ó´ðàèCG~b^XÉÊ

qø¦É«Éõ½ÉÂ¢ÄCERL dlÉÅK»µ½·é cERL püËíNCIW

J\[hJ­ª¼Ã®åwÆ¤¯ÅisÅ

e 2 Zó´ÉÍCügdÍð·é½ßÉãº 2

éB[ð Fig. 5 É¦·BhCu[UÉÖµÄÍCKEK É¨¢ÄCsÌÌJ

{ÌådÍüÍíªæèt¯çêCÜ½Có´àðÊÔµüg1.3 GHz Ìt@Co[U­UíÆt@Coß·édqr[ÉæÁÄUN³êé²g[hðæèíðgÝí¹½VXeÉCÆ©ÉJ­ðißÄ¢éo·×C5 äÌ HOM Jbv[ªæèt¯çêÄ¢éB¤Uí^ SHG ðÁ¦C10 mA Ìdqr[¶¬ªÂ\ÆcERL ÅÌüËó´Ì^]É¨¢ÄCeó´Ì^]Á¬ÈéCãNg·ñ530 nmC½ÏoÍ 1 W Ì[UVXdEÆüÍí 1 {eÌ\zðißÄ¢éB¼êCæ 1 ó´ÅÍ6.5 MV/mCñ10 kW Å

½èÌüügdÍÍC»ê
èCæ 2C¼ûCå¨«¤ÉY¤ÉïéåÅÍCtHgjbNæ 3 ó´ÅÍ11 MV/mCñ25 kW ÆÈéB·ÅÉC2 ä»t@Coíðp¢½oÍ[UJ­ðißÄ¨Ìvg^Cvó´ÅÌc^«\±ic^ÌNCI[àÅs¤Cr[ÈµÌ´`±óÔÅÌ RF üèC±êÜÅÉg·1030 nmCJÔµ85 MHz ÉÄ½Ïo

W

Í31 W ÌÉ¬÷µÄ¢éBÜ½t@Co[[U[ªè±jªsíêC»ÌÊÆµÄC¼ó´É¨¢ÄVXeÉæÁÄ¾çê½¢[UoÍðCñü`õw

40 MV/m ªB¬³ê½ªCHOM Jbv[ÅÌ­MªÞ¿Åà

âè_ÆµÄ»¾µC»ÌüPÉæègñÅ¢éBÜ½CétHgjbN»t@CoÖÊ·±ÆÉæèCLÑæÈ[Uõð¶¬·é±ðißÄ¨èCKØ

2 äÌvg^CvüÍíÌCeXgX^hÅÌåÈãNg·Ì[UõÅAÉðãN·é±ÆÅCG~b^d Í  ± ð s ¢ C CW Å 50 kW Ü Å Ì ^ ] ª m F ³ ê

Fig. 5

Fig. 6

Design of cERL injector cryomodule.

Three 2­cell superconducting cavities (left) and six high power input couplers (right) for injector cryomodule.

úËõ Sept. 2011 Vol.24 No.5  261

½B]ÁÄCcERL Ì^]ÉKvÆ³êé«\ÌmFÉÍ
ÙÚÚªÂ¢Ä¢éóµÅ
cERL püËíNCIW

éB[ÉgÝÜêé 3 ä

Ì 2 Z´`±ó´Æ 6 äÌådÍügüÍíÌ»ìÍ·ÅÉ®¬µÄ¨èC»êð Fig. 6 É¦·B±êçÌ 2 Zó´Ì\Ê¨æÑc^«\±Í»ÝisÅéB¡ãCó´«\mFãC2011NÜÅÉÍ`^»wE

WPbgÌnÚHöÖÆiÞ\èÅéBÜ½C¯úÜÅÉ 6 äÌüÍíÌeXgX^hÅÌådÍ±ðI¹µC2012N 2 ©çüËíNCIW[ÌgÝ§ÄðJnC³KX®¬¸

ðoÄC5 ÉÍÅÌâp±ªs¦éæ¤ÈXPW[ÅæègñÅ¢éBr[õwÝv26,27)
ERL ÌõwnÌÝvÉÍC¢©ÉµÄ´áG~b^
Xr[Ìi¿ðÛµÈªçA·é©CÆ¢¤å«ÈÛèªéBdqe¼ãÌáGlM[ÌÌæÉ¨¢ÄCo`½èÌd×ÊªÅå77 pC ÅèCo`·ªps ©ç\ ps ÆZ¢½ßCóÔd×øÊÉæéG~b^
Xåª³Å«È¢B±Ìe¿Í b ÖÉàcÝð
^¦é½ßC}gbNXÉæévZªsÂ\ÅéB»±ÅCóÔd×øÊÌe¿ªå«¢áGlM[ÅÍCGeneral Particle Tracer (GPT) ÉæéV~[VFig. 7

ðsÁÄ¢éBêûCüñÅàCCSR wake ÉæéG~Optics for the rst commissioning of cERL with 1­loop recir­
culation path of 35 MeV beam energy.

b^XåªO³êÄ¢éB±Ìe¿ÍCo`·ªZ¢ÙÇ°ÅCdqÌGlM[ÉæçÈ¢×CÁÉGlM[Ìá¢ cERL ÅÍÀ@æèàå«Èe¿ðyÚ·BGPT Í±Ì CSR wake ÌV~[VàÂ\¾ªCvZÉcåÈÔª©©éÆ¢¤_ªéBüñÍüËÉä×Ä£ª·­CÁ¬¼üÍÙÈéGlM[Ìr[ÉÎµÄÅK»·é½ßÉü`IveBNX
ÌÝvÉàJèÔµZðKvÆ·éB»Ì½ßCüñÌõwnÌÝvÉÍ 1 ³Ì CSR wake ÌvZªÂ\Èelegant ðgpµÄ¢éB±Ìæ¤ÉCêâdqGl
M[ÉæÁ ÄÙÈév ZR[hÅ ÅK»ð· éû@ÍStart­to­End simulation ÆæÎêÄ¨èC¡ñÌ cERL Ì

Fig. 8Conguration of main superconducting cavity module.

õwnÅà»êðsÁÄ¢éBvZR[hÌØèÖ¦ÍC
35 MeV ÉÁ¬µ½¼ãÅsÁÄ¢éBFig. 7 ÉüñÌó´{ÌÉÍCKEK ªißéjARC_[væÅb Ö¨æÑªUÖðÚ¹éBSüÉí½ÁÄ b ÖðJ­³ê½1.3 GHz ´`±ó´ZpÆ KEKB Á¬íÉg

30 m ÈàÉ·éÆ¯ÉCr[ªLªèÕ¢r[_íêÄ¢éåd¬Á¬p´`±ó´ZpÆðîbÉµÄC

vÖü©¤CÅÌr[TCYð3.4 mm ÈºÉ}

V½É ERL prÉÅK»³ê½ 9 A^ó´ðÝviFig. 8j¦Ä¢éBµ½BACXûaðå«­µÄ²gðæoµÕ­·éÆÆàÉCåûar[pCvÌæÉtFCgzûÌð

üñó´28_31)
üñó´J­ÍCdEÅÌA±g^]iCW: con­tinuous wavejÆ100 mA Ìåd¬Á¬ðÂ\É·é´zuµÄ²gð¸³¹éBÜ½Cr[pCvÉ
EFB (eccentric uted beam pipe) ÆÄÎêé[hÏ·íðæèt¯ 4 É[hÌ¸ðs¤ÈÇÌÁ¥éÝ`±ó´ÌÀ»ðß´µÄC2006NÉ KEK, JAEA, ISSP

vÉæèC9 Aó´Éà©©íç¸Á¬r[Æñûr[ª¯`[ð¬µÄ®ðJnµ½Bðí¹½200 mA Ìr[×ÉÏ¦é\¢ÉÈÁÄ

262  úËõ Sept. 2011 Vol.24 No.5

¢ãO^õ¹væÁW ¡ PFCPF_AR Ì«væ\cERL ÌÝ©ç 3 GeV ERL ÌÀ»Ö\

Fig. 99­cells superconducting cavities.
Fig. 10

Cryogenic system.

¢éiFig. 9jB
ügdÍÆµÄÍCügÏ®ÉÎµÄÀèÈÁ¬d
êðÛØ·é½ßÉ20 kW ðzèµC»Ì½ßÌüÍgð 1 äðp·é\èÅé B 30 kW  ü g ¹

íðÝvµ½BdÍÚÆÆàÉfM^óðÊß·éJÍCo`[CüËæêó´¨æÑCjAbN

v[ÌâpC2 K ó´ÖÌMNüÌá¸ÈÇÌMÝvªi2 ó´ÌxN^[TjC300 kW üg¹ÍCüËæKvÅñó´CæOó´ÌxN^[T^]Ép·éBÅåÌ

Á½B

Zo`ªó´àÉãN·é²gÍ40 GHz ÈãÉà

üg¹Å

é300 kW NCXg¨æÑ30 kW ÌèCdÍà100 W ð´¦éÆè³ê

IOT ÉÂ¢ÄÍ C2010N xÉó¯üê±ð I¦Ä¢

éB±êðzû·étFCgzûÌÍtÌfÅâp³éB¡NxCo`[p IOT ðwü·êÎCcERL p

êéªC×Ú·é 2 K Ì´`±ó´ÖÌMNüðh®HÌå dÍü g¹ÍS ª»ë¤±Æ ÉÈéB± êçvªKvÅ

IOT âNCXgðì®·é×Ìd¹ÉÂ¢ÄàC¨æÔLÑæÅ

éB±êçÌvfJ­ÍÙÚ®¹µCìó´ÅÍÝvl

·ÅÉ ERL J­ÉÝuÏÅ

éBüg¹Æó´ÔÌ

15 MV/m ÉÎµ25 MV/m ÈãÌÁ¬dêª¾çêÄ¨§ÌñHniügªòâügj^[pÌJv[CèCíàf·xÅ25 kW ÌdÍ±É¬÷CÜ½

T[L²g¸íÉÂ¢Äàá·ÅÌzûÁ«ÌvªÈÇªsV[hÌÑÊûðÊµÄÚ±·é½ßÌzuÝvðiß

íê½B»ÝÍ±êçðWñ·éNCIX^bgÌÝvÄ¢éBðißÄ¨èC2012NÌ®¬ðß´µÄ¢éB[^ÈÇðÜÞjÉÂ¢ÄÍC»ÝCúËü

cERL ÅÍó´dEÉÂ¢ÄCUÀèx0.1÷rmsCÊ
Àèx0.1x rms ªßçêÄ¢éB±êçÌvdlwEâpVXeð½·½ßÉC±êÜÅCJ_PARC jAbNâ STF

2009NxæèÝðsÁÄ«½ cERL p 2 K wE

É¨¢ÄJ­µÄ«½ügfW^tB[hobNVXâpVXeiFig. 10jÍC2010N 8 É³KXÛÀ@eðÌp·éBfW^nÌSÆÈé¬ ADC ðÉèßéïé§Éæé®¬¸ðóCiµC³®È^Úµ½ FPGA {[hÉÂ¢ÄÍCmTCA KiÉ¥Á½à

]ªÂ³ ê½B¨¿ ÉÞ¿¤ @\©çÚ Ý³ê½ÌðJ­µÄ¨èC»Ý]¿ÅéB

TCF200wEt»â@iâ\Í500 W4.4 KCt»¦250 L/hjÍùÉ·ÔÉjÁÄ^]³êÄ¢½½

5. ¡ãÌXPW

[ßCwEt»â@ÌzÇàðôòµCt»â@Ì«\ñðÚwµ½BzÇÌôòÉÍ·¢Ôð©¯»ÝCcERL ÌÝÆKvÈvfJ­ðC2012NxÌÄCt»â@Ì^]ÉSðúµ½B2011N 1 ÉÚ

R~bVjOJnðÚWÉißÄ¢éBPxdqeÝãÌ^]ðs¢C³CwEÌt»É¬÷µ½B

ÅÍC300 kV Ìd³ðóÁµ½r[ø«oµÉ¬÷»ÌãCeÊ3,000 L Ìt»wEÌâpðs¢CµCÉ^óÌB¬Éü¯½õðißÄ¢éBr[õt»â@Å¶¬µ½tÌwEðàÖÚµÄC

wÝvàClXÈ[hÉÎ·édqe©çr[_vtÌwEÌðsÁÄ¢éB

üg¹32_34)
cERL ÅÍüg¹ÆµÄÍC30 kW NXÌNC
Xg¨æÑ IOT ðv 3 äCÜ½300 kW NCXÜÅÌêÊèÌV~[Vª®¹µÂÂéBüËípÆåÁ¬ípÌ 2 ÂÌ´`±NCIW[àC

2012NÉÍ®¬·é\èÅéBüñÌd¥ÎÉÂ¢ÄÍCvg^CvÌ¥êªèðs¤ÆÆàÉCÊYð
JnµÄ¢éBRF ¹ÉÂ¢ÄÍCÇÆ³d¹Ì²B

úËõ Sept. 2011 Vol.24 No.5  263

ªÙÚIíèC²®±Æ cERL p§ÌñHÌ\zÉü¯½õCfW^[xnÌJ­ðsÁÄ¢éBtÌwEâ@ÉÂ¢Äàt»É¬÷µCzèÈãÌ
«\ðmFµC»ÝâÎ·x 2 K Ì½ßÌVXeÌ®
õÅéBERL J­àÅÍc¯úË»¨ÌPª®

14)
15)

16)

¹µCúËüV[hÌÝvªÙÚI¹µ½BúËüV[hÍ2011NH©ç2012NÄÌúÔÉÝ³êé\è

17)ÅCÝãÉ cERL ÌüñÌ@íªÝu³êéBêÌ@íiNCIW[jÉÂ¢ÄÍCV[hªê®¬µ½_ÅÝu³êC«\±ðnßé\èÅ
éB

18)

19)

Ó«

20)

eÌ´eC}yÑSÌÌ\¬ÉÖµC«§LêC
R{«C¼XMsC{cmîCÁÃi¡Ccü¿CÃ®MÍC¹^êYCä_FC¬ÑK¥CºTYCÍcmÉ´ÓvµÜ·B

èªÆ¤²´¢Ü·B

2)

3)

4)

5)
6)
7)
8)

9)
10)

11)
12)

13)

22)
23)

Ql¶£
1)

21)

S. Kamada, Y. Kamiya and M. Kihara: ``Lattice of Photon
Factory Storage Ring'', Proc. of PAC 1979, p3848.
Y. Kamiya and M. Kihara: ``Low emittance conguration for
Photon Factory storage ring'', KEK_Internal 85_10, 1985, inJapanese.
M. Katoh, et al.: ``Design study on a high brilliance lattice of
the PF storage ring'', 9th Symposium on Accelerator
Science and Technology, KEK, Tsukuba, Japan, 1993, p312
T. Honda, et al.: ``Commissioning of the PF Ring after the
Reconstruction for the Straight­sections Upgrade'', Proc. of
SRI 2006, pp. 87_90
K. Yokoya, T. Suzuki and Y. Kimura: ``Accumulation Ring
Linear Lattice'', Tristan design note, TN_
80_001.
T. Miyajima, et al.: ``Present Status of Photon Factory Ad­
vanced Ring'', Proic of PAC 2003, pp. 860_
862.
See, for example, D. Bilderback et al.: New J. Phys. 12,035011 (2010).
HÇêF
gGlM[ñû^jAbNiERLjÉ¨¯ér[¨hCJ. Plasma Fusion Res. Vol. 86, No. 8, 473_477(2010).
zKc CÑcúvÒWFgúËõ«væ¢ñ\
ERL õ¹Æp¤\hCMarch, 2003.
R. Hajima, N. Nakamura, S. Sakanaka and Y. Kobayashi:``Design Study of the Compact ERL'', Feb, 2008, KEK
Report 2007_7/JAEA_Research 2008_032.
cü¿FgERL væÌi»óµhCæ 8 ñÁ¬íwïNï
vV[fBOXCTULH09, Tsukuba, 2011.
âÍå¼F
gRpNg ERL ÝÌi»óµhCæ 8 ñÁ¬íwïNïvV[fBOXCTUPS079, Tsukuba,
2011.
R. R. Lindberg and K.­J. Kim: PAC09, pp. 1198_1200, K.­J.
Kim, Y. Shvyd'ko and S. Reiche: Phys. Rev. Lett. 100,
244802 (2008).

264  úËõ Sept. 2011 Vol.24 No.5

24)

25)

26)

27)

28)

29)

30)

31)

32)
33)
34)

D. Xiang, Z. Huang and G. Stupakov: Phys. Rev. ST Accel.
Beams 12, 060701 (2009).
¼XMs¼Fg500_kV õAÉ DC dqeÌJ­hCæ 8 ñÁ
¬íwïNïvV[fBOXCMOPL05, Tsukuba,2011.
iäÇ¡¼FgJAEA_250 kV õAÉdqeÉ¨¯é¥CG~b^XâhCæ 8 ñÁ¬íwïNïvV[fBO
XCTUPS106, Tsukuba, 2011.
R{«¼FgERL Pxdq¹Ì½ßÌÉ^ónÌJ­Æ]¿hCæ 8 ñÁ¬íwïNïvV[fBOXC
TUPS160, Tsukuba, 2011.
¼trÆ¼FgNEA_GaAs tHgJ\[hÌG~b^XyÑÔªèhCæ 8 ñÁ¬íwïNïvV[fBOXCMOPS073, Tsukuba, 2011.
{cmî¼FgPxdqeÖWÌi»óµhCæ28ñ PF
13, 2011.
V|WEC|X^[ FE_03, Tsukuba, Jul. 12_}´ º¼FgERL õAÉdqeãNp Yb t@Co[[U[VXeÌi»óµhCæ 8 ñÁ¬íwïNïvV[
fBOXCTUPS064, Tsukuba, 2011.
K. Watanabe, et al.: ``New HOM coupler design for ERL in­
jector at KEK'', SRF '2007, Beijing, China (2007) p530.
K. Watanabe, et al.: ``SC cavity system for ERL injector at
KEK'', SRF '2009, Berlin, Germany (2009) p359.
E. Kako, et al.: ``Advances and performance of input cou­
plers at KEK'', SRF '2009, Berlin, Germany (2009) p485.
S. Noguchi, et al.: ``Present status of superconducting cavity
system for cERL injector linac at KEK'', IPAC '10, Kyoto,
Japan (2010) p2944.
K. Watanabe, et al.: ``Status of development of the cERL su­
perconducting injector linac'', LINAC10, Tsukuba, Japan(2010) p401.
cü¿¼FgcERL ÌeBX¨æÑ CSR ÉæétRvgî X ü¹hCæ28ñCPF V|WECûª­\yÑ|X^[ FE_09, Tsukuba, Jul. 12_13, 2011.
{ i¼FgERL ´`±Á¬ó´ÅÌ¸¬r[ÌV~[VhCæ 8 ñÁ¬íwïNïvV[fBOXC
TUPS058, Tsukuba, 2011.
Takaaki Furuya, et al.: Development of a Prototype Module
for the ERL Superconducting Main Linac at KEK, Proc. of
the IPAC10, Kyoto, 2010.
Kensei Umemori, Takaaki Furuya, Hiroshi Sakai, Takeshi
Takahashi, Masaru Sawamura and Kenji Shinoe: Results ofVertical Tests for KEK_ERL 9_
cell Superconducting Cavity
Proc. of the IPAC10, Kyoto, 2010.
Hiroshi Sakai, Takaaki Furuya, Shogo Sakanaka, Takeshi
Takahashi, Kensei Umemori, Atsushi Ishii, Norio
Nakamura, Kenji Shinoe and Masaru Sawamura: Power
Coupler Development for ERL Main LINAC in Japan. Proc.
of the IPAC10, Kyoto, 2010.
M. Sawamura, T. Furuya, H. Sakai, et al.: Eccentric­uted
beam pipes to damp quadrupole higher­order­modes, Phys.
Rev. ST_AB, 13, 2010, 022003_
1_
9.
S. Fukuda, et al.: ``RF Source of Compact ERL in KEK'',IPAC10, pp. 3981_3983, Kyoto, May 23_28, 2010.
T. Miura et al.: ``Low­Level RF System for cERL'', IPAC10,
pp. 1440_
1442, Kyoto, May 23_
28, 2010.
OYFq¼FgKEK É¨¯é cERL Ìüg¹h
Cæ 7 ñÁ
929, Himeji,¬íwïNïvV[fBOXCpp. 927_
Aug. 4_6, 2010.

¢ãO^õ¹væÁW ¡ PFCPF_AR Ì«væ\cERL ÌÝ©ç 3 GeV ERL ÌÀ»Ö\ ÒÐî ´c¾Y

GlM[Á¬í¤@\ Á¬í¤
{Ý Á¬íæµ¤nÉ³
E­mail: kentaro.haradakek.jpêåFúËõ¹mªðn
2002Nåwåw@wn¤È¨wêUmÛöPÊæ¾ãÞwCmiwjCGlM[Á¬í¤@\¨¿\¢Èw¤úËõ¹¤nèC
2007N³iE¼ÏXjC2009NÁ¬í¤{ÝÁ¬íæµ¤n³i»EÖgDÏXjB

ERL vWFNg`[AæFERL væiºiKEKj
E­mail: erl­secpqst.kek.jp
mÐînKEK, JAEA, ISSP, UVSOR, JASRI, AISTCLåwC¼Ã®
åwCRûåwCïéåwÌÁ¬íyÑÖAªìÌ¤Ò©çÈé¯`[B

Future plan of PF and PF_AR\Construction of cERL and design of 3 GeV ERL\
Kentaro HARADAERL Project Team

KEK_PF, 1_1, Oho, Tsukuba, Ibaraki, 305_0801, Japan(KEK, JAEA, ISSP, UVSOR, JASRI, AIST, Hiroshima University, Nagoya University, Yamaguchi University,
Ibaraki University)
ERL Project Oce, 1_1, Oho, Tsukuba, Ibaraki, 305_0801, Japan

Abstract The PF ring was constructed in 1978 as a second generation synchrotron light source. PF_AR was
originally constructed as the TRISTAN_AR that was booster ring for electron­positron collider. The user experi­ments began in 1983 at the PF ring and in 1987 at the TRISTAN_AR. After several times upgrades, PF and PF_
AR are operated for over 4000 hours a year for user experiments until these years. However, because it wasover 30 years from construction, the aging was severe for both previous generation light sources. Thus the de­velopment for the 3 GeV class ERL is promoted in KEK Tsukuba campus based upon the superconducting
technology as the future plan of the both rings. We are now constructing compact_ERL that is test machine forthe 3 GeV class ERL. In this paper, after the basic explanation of ERL, we show the characteristics of 3GeVERL and the status of cERL.

úËõ Sept. 2011 Vol.24 No.5  265