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TY - CONF AU - Wang, W. AU - Du, L. AU - Guan, X. AU - Huang, W.-H. AU - Lei, Y. AU - Qiu, M.T. AU - Wang, X.W. AU - Wang, Z.M. AU - Xing, Q.Z. AU - Zheng, S.X. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - 2D Beam Profile Monitors at CPHS of Tsinghua University J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - Beam profile is a key parameter for high current proton linac. Compact Pulsed Hadron Source(CPHS) has two type of detectors to monitor beam 2D beam profile: scintillator screen and rotatable multi-wire scanner. A retractable chromium-doped alumina (Chromox) screen is used as scintillator, emitted lights when impacted by proton are captured by a 12 bit CCD camera. Nineteen carbon fibre wires with a diameter of 30 'm, 3 mm separated from each other, are used to measure beam 1D distribution. Projection can be measured at different direction by rotating the multi-wire scanner about beam direction. 2D beam distribution is reconstructed from multiple projections with the help of CT. Different CT algorithms, Algebra Reconstruct Technique (ART) and Maximum Entropy algorithm (MENT), are applied to achieve accurate or quick reconstruction. The preliminary experimental results show the two profile monitors working consistently with each other. PB - JACoW CP - Geneva, Switzerland SP - 298 EP - 301 KW - proton KW - target KW - ion KW - radiation KW - electronics DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-MOPAB076 UR - http://jacow.org/ipac2017/papers/mopab076.pdf ER -