| Article | |
| Title | The Beam Diagnostics System in the J-PARC LINAC |
| Author(s) | Lee, S ; Igarashi, Z ; Toyama, T |
| Affiliation | (KEK, Ibaraki JAERI/LINAC, Ibaraki-ken JAERI, Ibaraki-ken JAERI/FEL, Ibaraki-ken) |
| Publication | 2004 |
| In: | 22nd International Linear Accelerator Conference, Lubeck, Germany, 16 - 20 Aug 2004, pp.441 |
| Subject category | Accelerators and Storage Rings |
| Abstract | Large amount of beam monitors will be installed in J-PARC linac. Electrostatic computations are used to adjust the BPM cross-section parameters to obtain 50 Ω transmission lines. BPMs are designed to control the offset between quadrupole magnet and BPM electrical centers less than 0.1mm. We present a procedure of beam based calibration/alignment (BBC/BBA) method to confirm the displacement of linac BPMs. The fast current transformer (FCT) has response of relative bunch phase <1%. To measure the beam energy at every accelerator tank and injection point of 3 GeV RCS, phase difference of FCT pairs are used, and 10<sup><font size="-1">-4 |
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Published version from JACoW