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TY - CONF AU - Thomas, C.A. AU - Etxeberria, J. AU - Johansson, A.J. AU - Kocevar, H. AU - Martins, J.P.S. AU - Meigo, S.I. AU - Niu, H. AU - Ooi, M. AU - Shea, T.J. AU - Törmänen, M. AU - Zhang, B. ED - Schaa, Volker RW ED - Jansson, Andreas ED - Shea, Thomas ED - Olander, Johan TI - J-PARC Test of ESS Beam on Target Diagnostics Prototypes Aperture Monitor and GRID J2 - Proc. of IBIC2019, Malmö, Sweden, 08-12 September 2019 CY - Malmö, Sweden T2 - International Beam Instrumentation Conferenc T3 - 8 LA - english AB - The ESS high power beam will be delivered to the spallation target with high degree of control. To this end, we have designed a suite of instruments which provide measurement of the beam characteristics in a drift space a few meters from the target. Two of these instruments, the APTerure Monitor (APTM) and the GRID are presented. The APTM is designed to measure the fraction of beam going through the defined aperture; its time acquisition ranges from intra-pulse at µs sampling rate to many pulses over seconds. The GRID measures the projected horizontal and vertical profiles, sampling the pulse at 1MHz. A prototype of these two instruments has been designed and installed in the 3NBT dump line of J-PARC. They are designed to test functionality of these instruments in a similar environment as ESS. The 3NBT Dump line at J-PARC presents such an environment. In the second part of the paper we report the results and the measurements performed to test the prototypes. Before concluding we will discuss the results and propose improvements to the instruments final design. PB - JACoW Publishing CP - Geneva, Switzerland SP - 387 EP - 391 KW - target KW - electron KW - proton KW - HOM KW - monitoring DA - 2019/11 PY - 2019 SN - 2673-5350 SN - 978-3-95450-204-2 DO - doi:10.18429/JACoW-IBIC2019-TUPP032 UR - http://jacow.org/ibic2019/papers/tupp032.pdf ER -