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there are many detector r&d activities ongoing for the future linear collider experiment .
almost all of those activities need to prove those technology by building and testing small test modules or prototypes . for those tests , good test beam facilities which can provide well - tuned high energy particle beams are indispensable .
although fermilab and cern are quite popular with those excellent test beam sites , some facilities in asia are also providing useful beams for the small detector tests .    in later sections
i briefly introduce following 4 test beam sites in asia :    * j - parc test beam facility , * laboratory of nuclear science in tohoku university , * ihep test beam facility in beijing , * protovino in ihep russia .
the j - parc accelerator @xcite in japan will have the test beam area . in the target hall
, there will be two beam lines named k1.8 and k1.1 , as shown in figure  [ jparc1 ] , which users can get charged pion , kaon and proton beams up to 3  gev ( on k1.8 ) or 1.1  gev ( on k1.1 ) .
originally the k1.8 is the main test beam facility at the j - parc .
however , during the initial phase of the j - parc operation , intensity of the main accelerator will not be as much as large , which results in small rate of particles in the test beam area .
expected rate at k1.8 beam line during the initial operation phase is shown in figure [ jparc2 ] left plot . due to this reason ,
the k1.1 beam line is being prepared as the tentative site . at the k1.1 beam line , even during the initial operation phase users can get high intensity beam as shown in figure  [ jparc2 ] right plot .
however the particle energy at k1.1 beam line is limited to 1.1  gev , and will be available only until the end of 2010 . after the k1.1 becomes unavailable , k1.8 beam line will be opened for users with more intense beams .
at the tohoku lns in japan , there is an facility where users can get positron beams with energy ranging between0.1 - 0.9 gev .
it utilizes positrons generated as tartially beam from bremsstrahlung photons by the lns electron synchrotron .
layout of the lns site and energy spread of the electron beam are shown in figure  [ tohokulns ] .
the beam has 7-seconds on & 7-seconds off spill structure , and nominal rate during the spill is 2 - 3  khz .     experimental hall in the picture .
left plot is the energy spread of the positron beams for different types of gamma - conversion target . ]
at the end of 2010 , the ihep test beam line at beijing will be back for users from shutdown period for upgrades . during the upgrade , several beam line devices , such as cerenkov detector , silicon tracking device and multi - wire
proportional chambers are equipped and available for users use .
schematic view of the beam line and the beam parameters are shown in figures  [ ihepbeijing1 ] and [ ihepbeijing2 ] . the beam line will start the commissioning around january 2011 , and will provide electron beams up to 1.9 gev , charged pion and proton beams up to 1.2  gev to users .
another test beam facility can be found at protovino accelerator in ihep russia .
several types of particle beams ( electron , charged hadrons ) with energy up to 55  gev are provided to the test beam area .
there are also various beam line devices , scintillation counter , tracker , cerenkov counter and time - of - flight detectors available for users use as shown in figure  [ iheprussia ] .
the available periods for test beam users are twice a year , in march - april and nov - dec , for a month each time . during those periods
, users can use several beam lines where several types , energies and intensities of particles available .
table [ iheprussia2 ] shows summary of beam parameters for two beam lines n2b and n22 .
in asian region there are several beam test facilities available for the linear collider detector r&d .
although beam energies and available periods are limited for some sites , those might be still useful for test of small test modules which just needs charged particle beams with order of 1  gev of energy .
in japan , china and russia , there are several test beam lines available or will become available in near future . 
 those are open for users who need electron , muon and charged pion beams with energies of 1 - 50  gev for any tests of small - size detectors . in this manuscript 
 i present a current status of those test beam facilities in the asian region .