JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
J-PARC, KEK & JAEA, Ibaraki-ken
KEK, Ibaraki
The Beam Based Alignment (BBA) of the BPM is inevitable for precise and absolute beam position measurements. Even though careful fabrication and installation of the BPM detector, it has to be calibrated by using the beam. Usually, it requires that the individual quadrupole magnet is able to be controlled. However, it is not always that case. In addition, scanning over the all BPM is time consuming procedure. The BBA method under coupled QM environment would help to reduce time for calibration. It presents general formula and experiences at J-PARC RCS and parts of results are compared with the ordinal method at J-PARC MR.
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
The J-PARC consists of linac, 3-GeV RCS (Rapid Cycling Synchrotron), 50-GeV MR (Main Ring synchrotron) and three experimental facilities, the MLF (Material and Life science experimental Facility), the hadron experimental facility and the neutrino beam line. The RCS has performed 120 kW beam operation to the MLF since November 2009 and recently the MR has started 50 kW beam delivery to the neutrino beam line. In this paper the recent progress and experience in the course of our beam power ramp-up scenario such as beam loss control and machine activation will be presented.
ORNL, Oak Ridge, Tennessee
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
PSI, Villigen
As hadron machines approach higher beam intensity and operational power levels, issues such as machine activation caused by beam loss, machine protection and machine availability become more critical concerns. The operational experience of the high power, high intensity facilities in these areas is compared.