Transverse bunch-by-bunch feedback systems for damping coupled-bunch instabilities in the KEKB rings have been working well since the early stages of the commissioning of the rings. Beam diagnostic systems that are the part of the bunch feedback systems, such as bunch current monitors, betatron-tune measurements systems, and bunch oscillation recorders, have been playing important roles in the ...

date bunch fading (dbf) is a serious disease of date palm (phoenix dactelifera l.) in iran. fusarium proliferatum was isolated from the xylem of fruit bunch samples sent from kerman and fars provinces groves to the laboratory. koch’s postulates were completed in the greenhouse by crown injection and root inoculations. shriveling of the fruits was induced by peduncle inoculations. symptoms on th...

The Robust Conjugate Direction Search (RCDS) [1] optimizer is applied for online optimizations of the ESRF accelerators. This paper presents the successful application of the algorithm in reducing vertical emittance, improving injection efficiency and increasing lifetime. A new set of sextupole settings to increase chromaticity has been obtained with lifetimes comparable to the existing one. Th...

This paper presents the most important morphological and production-technological characteristics of newly created grapevine varieties Vozd Vladun, intended for production red wines. The were compared with standard variety Cabernet Sauvignon during three-year period testing (2015-2017) in relation studied properties. obtained from crossing combination Zacinak x Prokupac, Vladun Merlot Zupski Bo...

Two Hadamard matrices of order 764 of Goethals– Seidel type are constructed. Recall that a Hadamard matrix of order m is a {±1}-matrix A of size m × m such that AA T = mI m , where T denotes the transpose and I m the identity matrix. We refer the reader to one of [2, 4] for the survey of known results about Hadamard matrices. In our previous note [1], written about 13 years ago, we listed 17 in...

As the beam currents at the SLC are increased, transverse aperture restrictions in the ring-to-linac transport line (RTL) become increasingly important. The RTL contains a bunch compressor which introduces a large energy variation across the bunch and hence a larger transverse beam size. Since 1994 the compressor amplitude has been operating at higher than design voltage. While advantangeous fo...

An optical bunch-by-bunch beam diagnostic system, which can detect oscillations of individual bunches in a multi­ bunch operation, has been developed. The system is com­ posed of a high-speed light shutter and an optical beam­ oscillation detector. The shutter that consists of a pockels cell and polarizers can be opened or closed in a bunch spac­ ing time (2ns in KEK-PF) and it can select a lig...

Grape (Vitis vinifera) yield is largely dependent on the fecundity of the cultivar. The average number of inflorescences per shoot (i.e. shoot fruitfulness) is a trait related to fecundity of each grapevine. Berry number and weight per bunch are other features affecting grape yield. An ovule-specific auxin-synthesizing (DefH9-iaaM) transgene that increases the indole-3-acetic acid content of gr...

A theory of transition free-electron laser ~FEL! driven by an electron bunch of finite longitudinal length is presented. It is shown that one can introduce concepts of a long, a short, and a very short bunch depending on the degree of correlation between the bunch effective length and the transition radiation formation length. It is obtained that a long Gaussian bunch produces an electromagneti...