Ivanyushenkov, Y. Doose, C.L. Emma, P. Fuerst, J.F. Gluskin, E. Harkay, K.C. Hasse, Q.B. Kasa, M. Shiroyanagi, Y. Skiadopoulos, D. Trakhtenberg, E. JACoW Geneva, Switzerland 978-3-95450-180-9 10.18429/JACoW-NAPAC2016-THA1CO06 English 1068-1070 THA1CO06 undulator ion photon vacuum operation Contribution to a conference proceedings 2017 2017-01 http://dx.doi.org/10.18429/JACoW-NAPAC2016-THA1CO06 https://jacow.org/napac2016/papers/tha1co06.pdf Development of superconducting undulator (SCU) technology continues at the Advanced Photon Source (APS). Experience of building and successful operation of the first short-length, 16-mm period length superconducting undulator SCU0 paved a way for the second 1-m long, 18-mm period device, SCU1, which is in operation since May 2015. The APS SCU team has also built and tested a 1.5-m long, 21-mm period undulator as a part of LCLS SCU R&D program aiming at demonstration of SCU technology availability for free electron lasers. This undulator successfully achieved all the requirements including a phase error of 5 degree rms. Our team is currently completing one more 1-m, 18-mm period undulator that will replace the SCU0. We are also working on a helical SCU for the APS. The status of these projects will be presented.