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TY - CONF AU - Schreiber, P. AU - Boltz, T. AU - Brosi, M. AU - Härer, B. AU - Mochihashi, A. AU - Müller, A.-S. AU - Papash, A.I. AU - Schuh, M. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Status of Operation With Negative Momentum Compaction at KARA J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - For future synchrotron light source development novel operation modes are under investigation. At the Karlsruhe Research Accelerator (KARA) an optics with negative momentum compaction has been proposed, which is currently under commissioning. In this context, the collective effects expected in this regime are studied with an initial focus on the head-tail instability and the micro-bunching instability resulting from CSR self-interaction. In this contribution, we will present the proposed optics and the status of implementation for operation in the negative momentum compaction regime as well as a preliminary discussion of expected collective effects. PB - JACoW Publishing CP - Geneva, Switzerland SP - 878 EP - 881 KW - optics KW - operation KW - injection KW - quadrupole KW - sextupole DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-MOPTS017 UR - http://jacow.org/ipac2019/papers/mopts017.pdf ER -