MOVEMENT OF BPMS DUE TO THERMAL STRESS IN KEKB (2008)
M. Tejima, M. Arinaga, T. Ieiri, H. Ishii, H. Fukuma, M. Tobiyama, ...
Movements of Beam Position Monitors due to thermal stress in high beam current operation were observed in KEKB. For high luminosity operation of KEKB, the beam current as high as 1.7 A is accumulated...
ASYMMETRICAL SPECTRUM OBSERVED AT THE KEKB HIGH-ENERGY ELECTRON RING (2008)
T. Ieiri, Y. Ohnishi, M. Tobiyama
It was observed that the vertical tune-spectrum of an electron bunch showed an asymmetrical distribution biased to a higher tune in normal colliding operations. The asymmetry depended on the...
DYNAMIC BEAM-BEAM EFFECTS MEASURED AT KEKB (2008)
T. Ieiri, Y. Funakoshi, T. Kawamoto, M. Masuzawa, M. Tobiyama
A series of measurements were carried out to investigate the dynamic beam-beam effects. The beambeam kick and the beam-beam tune-shift were obtained by comparing the beam parameters between a...
KEKB Beam Instrumentation Systems (2007)
M. Arinaga, J. Flanagan, S. Hiramatsu, T. Ieiri, H. Ikeda, H. Ishii, ...
For the stable high-luminosity operation and luminosity-increase, the electron and positron storage rings of the KEK B-Factory (KEKB) is equipped with various beam instrumentations, which have being...
Abstract PRESENT STATUS OF THE KEKB BUNCH FEEDBACK SYSTEMS (2007)
E. Kikutani, J. Flanagan, T. Ieiri, M. Tobiyama
KEKB is a double-ring energy-asymmetric electronpositron collider, now operating at KEK. In order to achieve a luminosity on the order of10 33 =cm 2 =sor more, a very large number of bunches are...
K. Akai, N. Akasaka, A. Enomoto, J. Flanagan, H. Fukuma, Y. Funakoshi, ...
The commissioning of the KEKB B–Factory storage rings started on Dec. 1, 1998. The two rings both achieved a stored current of over 0.5 A after operating for four months. The two beams were...
LATTICE DIAGNOSTICS USING SINGLE KICK CLOSED ORBIT AT KEKB (2007)
Y. Ohnishi, K. Akai, N. Akasaka, A. Enomoto, J. Flanagan, H. Fukuma, ...
We have measured beta functions using single kick closed orbit at KEKB. The measured beta functions were compared with the model lattice and gradient errors were extracted from the result in a beta...
Measurement Of Beam-Beam Tune-Shift Parameter At Kekb (2007)
Ieiri Flanagan Fukuma, T. Ieiri, J. Flanagan, H. Fukuma, E. Kikutani, M. Tobiyama
We have measured the coherent beam-beam tune shift at KEKB, an asymmetric double-ring electron/positron collider. The relationship between the tune shift and the beam-beam parameter is nonlinear,...
Beam Diagnostics By Gating A Single Bunch At Kekb (2007)
Akai Fukuma Ieiri, K. Akai, H. Fukuma, T. Ieiri, T. Kawamoto, E. Kikutani, ...
A fast gate module has been developed at KEKB, which can pick up a signal of one bunch along a bunch train.Thegatemodulewasattachedtoatune measurement system and to a turn-by-turn beam-position...
Compensation of the Crossing Angle with Crab Cavities at KEKB (2007)
Abe, T., Akai, K., Akemoto, M., Akiyama, A., Arinaga, M., Ebihara, K., ...
Crab cavities have been installed in the KEKB B--Factory rings to compensate the crossing angle at the collision point and thus increase luminosity. The beam operation with crab crossing has been...
Thienpont, L, Beastall, G, Christofides, N, Faix, J, Ieiri, T, Jarrige, V, ...
In the present paper the IFCC WG-STFT recommends and provides the rationale to establish metrological traceability of serum free thyroxine (FT4) measurements to a candidate international conventional...
Measurement of free thyroxine in laboratory medicine - proposal of measurand definition (2007)
Thienpont, L, Beastall, G, Christofides, N, Faix, J, Ieiri, T, Miller, W, ...
Measurement of free thyroxine in laboratory medicine - proposal of measurand definition (2007)
Thienpont, Linda, BEASTALL, G, CHRISTOFIDES, ND, FAIX, JD, IEIRI, T, MILLER, WG, ...
Negative Momentum Compaction at KEKB (2004)
Ikeda, H., Flanagan, J. W., Fukuma, H., Hiramatsu, S., Ieiri, T., Koiso, H., ...
KEKB is a high luminosity e+e- collider for studying B mesons and has achieved the design luminosity of 1034cm-2s-1 in 2003. In order to get higher luminosity, we tested negative momentum compaction...
Beam optics matching in the KEKB injector linac (2000)
Kamitani, T, Koiso, H, Akasaka, N, Enomoto, A, Flanagan, J, Fukuma, H, ...
Impedance Measurements In The Kekb (2000)
Ieiri Ohmi Tobiyama, T. Ieiri, K. Ohmi, M. Tobiyama, H. Fukuma, K. Bane
In the KEKB storage rings, we have measured the current dependence of the betatron tunes and the damping rate to evaluate the broad-band transverse impedance. The measured impedances were...
Commissioning of the KEKB linac (1998)
Ogawa, Y, Akasaka, N, Enomoto, A, Flanagan, J, Fukuma, H, Funakoshi, Y, ...
Beam position monitor system for KEKB (1998)
Tejima, M, Arinaga, M, Ieiri, T, Ishii, H, Mori, K, Hiramatsu, S
Design of beam position monitor system for KEKB (1996)
Akasaka, N, Arinaga, M, Hiramatsu, S, Ieiri, T, Ishii, H, Mori, K, ...
Ieiri, T, Cochaux, P, Targovnik, H M, Suzuki, M, Shimoda, S, Perret, J, ...
A case of congenital goiter with defective thyroglobulin synthesis has been studied in molecular terms. The patient is the fifth of a kindred of six, three of which have a goiter. The parents are...
Ieiri, T, Cochaux, P, Targovnik, H M, Suzuki, M, Shimoda, S, Perret, J, ...
A case of congenital goiter with defective thyroglobulin synthesis has been studied in molecular terms. The patient is the fifth of a kindred of six, three of which have a goiter. The parents are...