Keyword: hadron
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MOM309 Upgrade of the Beam Monitor System for Hadron Experimental Facility at J-PARC extraction, EPICS, PLC, operation 1
  • Y. Morino, K. Agari, Y. Sato, A. Toyoda
    KEK, Tokai, Ibaraki, Japan
  Hadron experimental facility(HD hall) at Japan Proton Accelerator Research Complex (J-PARC) is designed to provide high intensity beam for particle and nuclear physics. Slow-extracted proton beam(2 second spill per 6 seconds) from main ring is injected to a production target at the HD hall. On May 2013, proton beam was instantaneously extracted to the HD hall in 5 milliseconds. The short pulse beam melted the production target. After the accident, the beam operation was stopped at the HD hall. For the recovery of the HD hall, we upgraded the beam line of the HD hall in many aspects to sustain the abnormal beam injection. The monitor system of the beam line was also upgraded to detect the abnormal beam injection. The rate monitor of second particles from the target was prepared to detect short pulse injection. The beam profile monitor was upgraded to measure at several times during one pulse to detect a sudden change of the beam profile. The beam loss monitor was upgraded to read out always to detect unexpected high intensity beam promptly. These signals were included in the interlock system. In this paper, the detail of the beam monitor system upgrade will be reported.  
slides icon Slides MOM309 [1.980 MB]  
MOPGF123 Upgrades of Temperature Measurements and Interlock System for the Production Target at J-PARC Hadoron Experimental Facility target, extraction, EPICS, proton 1
  • K. Agari, Y. Morino, Y. Sato, A. Toyoda
    KEK, Tsukuba, Japan
  Funding: This work was supported by Grant-in-Aid (No. 26800153) for Young Scientists (B) of the Japan Ministry of Education, Culture, Sports, Science and Technology [MEXT].
Hadron experimental facility is designed to handle intense slow-extraction proton beam from Main Ring (MR) of Japan Proton Accelerator Research Complex (J-PARC). On May 23, 2013, 2×1013 proton beams were instantaneously extracted to Hadron experimental facility in 5 milliseconds due to the malfunction of the power supply for Extraction Quadrapole magnet for a spill feedback at MR. Therefore the production target made of gold was locally damaged at Hadron experimental facility because of overheat by absorbing proton beam. After the accident we upgraded target temperature measurements with 100 milliseconds sampling and synchronization with beam spills in order to promptly detect damage to the production target as soon as possible. In addition, we also upgraded temperature trend graphs and an interlock system in order to figure out the state of the production target. Currently Hadron experimental facility ready to accept slow-extraction proton beam. The results of the temperature measurements and the interlock system for the production target during beam operation at J-PARC Hadron experimental facility, will be reported in this paper.
poster icon Poster MOPGF123 [0.497 MB]  
MOPGF174 Laser - Driven Hadron Therapy Project laser, ion, target, proton 1
  • F. Scarlat, A.M. Scarisoreanu
    INFLPR, Bucharest - Magurele, Romania
  • Fl. Scarlat
    Bit Solutions, Bucharest, Romania
  • N. Verga
    Univerity of Medicine and Pharmacy 'Carol Davila', Bucharest, Romania
  The laser beam (10 PW, 15 fs, 150 J, 1023 W/cm2) generated by APOLLON Laser System, now under construction on Magurele Platform near Bucharest may also be applied in radiotherapy. Starting from this potential application, location of malign tumors in patient may be situated, e.g., superficial (≤5 cm), semi-deep (5-10 cm) and profound (>10-40 cm). This paper presents the main physical parameters of a research project for a therapy based on hadrons controlled by laser, for the treatment of superficial and semi-deep tumors. Energies required for pin-pointing the depth of such tumors are 50-117 MeV for protons and 100'216 MeV/u for carbon ions. Hadron beams with such energies can be generated by the mechanism Radiation Pressure Acceleration (RPA). Besides, the control systems to provide the daily absorbed dose from the direct and indirect ionizing radiation at the level of the malign tumor of 2 Gy in 1 or 2 minutes with expanded uncertainty of 3 % are presented.