IPAC'23 - Student Poster Session Guide

IPAC’23 / STUDENT POSTER SESSION GUIDE 21 Student Poster Session LhARA, the Laser-hybrid Accelerator for Radiobiological Applications*, is a proposed facility for the study of proton and ion radiation biology. The accelerator is designed to deliver a variety of ion species over a wide range of spatial and temporal profiles at ultra-high dose rates. The fa- cility requires that the deposited dose distribution be measured in real-time. For this purpose, an ion-acoustic dose mapping system has been developed that, exploits the ultrasound waves generated by the ion beam**. The feasibility of this approach is being evaluated using a two- stage simulation. A water phantom modelled in Geant4 with beam energies up to 250 MeV is used to calculate the energy deposited by the beam as a function of position and time. The time-dependent 3D energy distribution is then used as the source in k-Wave to simulate the ion energy generation of acoustic (pressure) waves and their propagation in the three-dimensional space. A hemi- spherical acoustic sensor array is also simulated and its ability to reconstruct the generated pressure distribution is evaluated. The results show that the 3D deposited-energy distribution can be reconstructed with sub-mil- limetre accuracy and suggest, that further development of the system can lead to real-time, non-invasive Bragg peak localization and dose deposition profile measurement during ion- beam therapy. SUPM031 Monochromatization Interaction Region Design Optics for Direct s-channel production at FCC-ee Angeles Faus-Golfe (Université Paris-Saclay, CNRS/IN2P3, IJCLab), Bowen Bai (Harbin Institute of Tech- nology, Shenzhen), Frank Zimmermann (European Organization for Nuclear Research), Hongping Jiang (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie), Katsunobu Oide (Geneva University), Shu Zhang, Zhandong Zhang (Institute of High Energy Physics) . One of the most fundamental measurements since the Higgs boson discovery, is the measure- ment of its Yukawa couplings. Such a measurement is only feasible, if the centre-of mass (CM) energy spread of the e+e- collisions can be reduced from ~50 MeV in a conventional collision scheme to a level comparable to the natural width of the Higgs boson ~ 4 MeV. To reach the desired collision energy spread and improve the CM energy resolution in colliding-beam ex- periments, the concept of a monochromatic colliding mode has been proposed as a new mode of operation in the FCC-ee. This monochromatization mode could be achieved by generating a nonzero dispersion function of opposite signs for the two beams, at the Interaction Point (IP). Several methods to implement a monochromatization colliding scheme are possible, in this paper we report about the implementation by means of dipoles. More in detail a new Inter- action Region (IR) optics design for FCC-ee at 125 Gev has been designed as well as first beam dynamics simulations. SUPM032 Design of PIMS Debuncher System Pei Hua Qu, Yao Yang (Institute of High Energy Physics) . The debuncher is one of the key equipment of the CSNS accelerator，which is used to reduce the energy dispersion and central energy jitter of the beam generated by the linear accelerator. The debuncher meets the requirement of beam energy deviation at RCS injection point.