TY - CPAPER AU - Hara, T. AU - Fukami, K. AU - Inagaki, T. AU - Kinjo, R. AU - Kondo, C. AU - Otake, Y. AU - Takebe, H. AU - Tanaka, H. AU - Togawa, K. TI - Multi-beamline Operation Test at SACLA J2 - Proc. of FEL2015 AB - A new undulator beamline (BL2) was installed in September 2014 at SACLA. Following the installation of this second beamline, a DC switching magnet was replaced by a kicker magnet and a DC septum magnet for bunch-to-bunch multi-beamline operation. The commissioning of the new beamline and bunch-to-bunch operation was started early this year. Since SACLA has been operated with much higher peak currents around 10 kA compared to its original design value of 3 kA, the CSR effect in the beam transport line to BL2, where the electron beam is deflected twice by 3 degree, turns out to be non-negligible. BL2 is currently operated with reduced peak currents and the photon pulse energies of 100-150 μJ are obtained with increased undulator K-values around 2.6-2.85. Although the photon pulse energies of BL2 are still smaller than those of the existing beamline (BL3), the expected stability of the electron beam orbit after the bunch-to-bunch BL switching was achieved and simultaneous lasing at the two beamlines was demonstrated with 8 GeV electron beams. We will report the status and operational issues related to the multi-beamline operation at SACLA. PB - JACoW CY - Geneva, Switzerland SP - 293 EP - 296 KW - electron KW - operation KW - undulator KW - kicker KW - laser DA - 2015/12 PY - 2015 SN - 978-3-95450-134-2 DO - 10.18429/JACoW-FEL2015-TUA03 UR - http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tua03.pdf ER -