Investigation of beam self-polarization in the future e+e−e^{+}e^{-} circular collider

The use of resonant depolarization has been suggested for precise beam energy measurements (better than 100 keV) in the $e^{+}e^{-}$ Future Circular Collider (FCC-$e^{+}e^{-}$) for Z and WW physics at 45 and 80 GeV beam energy respectively. Longitudinal beam polarization would benefit the Z peak physics program; however it is not essential and therefore it will be not investigated here. In this paper the possibility of self-polarized leptons is considered. Preliminary results of simulations in presence of quadrupole misalignments and beam position monitors (BPMs) errors for a simplified FCC-$e^{+}e^{-}$ ring are presented.Comment: 9 p

Do Low Prices for Sugar-Sweetened Beverages Increase Children's Weight?

This paper tests whether prices of soda, fruit drinks, and other selected foods influence children’s BMI measures. Child and household data are drawn from the Early Childhood Longitudinal Survey, Kindergarten cohort (ECLS-K), which is merged with market prices available from the Quarterly Food at Home Price Database (QFAHPD) by county of residence. The results show that lagged prices for foods and drinks have more significant effects on children’s BMI compared to contemporaneous prices. This indicates that policies that affect food prices such as taxing or subsidizing would take time to have an effect on children’s weight.Childhood obesity, food prices, Consumer/Household Economics, Food Consumption/Nutrition/Food Safety,

The Effect of Television on the Amount and Quality of Food Children Consume

In experimental studies, children exposed to television food ads chose less healthy snacks and consumed more food overall, as compared with children exposed only to ads for toys. These findings, however, do not indicate that TV viewing causes a decrease in diet quality or an increase in weight. Other factors correlated with TV watching, such as neighborhood and parent and child characteristics, may be more to blame. We estimate the effect of an additional hour of television on total calories and the quality of food consumed during a day for children 6 to 18 years old. This research is the first to use a first difference (fixed effects) estimation strategy to investigate the impact of television on daily food consumption among children in the United States.Television, children, diet quality, calorie intake, fixed effects, CSFII, Consumer/Household Economics, Food Consumption/Nutrition/Food Safety,

Tune Determination of Strongly Coupled Betatron Oscillations in a Fast-Ramping Synchrotron

Tune identification - i.e. attribution of the spectral peak to a particular normal mode of oscillations - can present a significant difficulty in the presence of strong transverse coupling when the normal mode with a lower damping rate dominates spectra of Turn-by-Turn oscillations in both planes. The introduced earlier phased sum algorithm helped to recover the weaker normal mode signal from the noise, but by itself proved to be insufficient for automatic peak identification in the case of close phase advance distribution in both planes. To resolve this difficulty we modified the algorithm by taking and analyzing Turn-by-Turn data for two different ramps with the beam oscillation excited in each plane in turn. Comparison of the relative amplitudes of Fourier components allows for automatic correct tune identification. The proposed algorithm was implemented in the Fermilab Booster B38 console application and successfully used in tune, coupling and chromaticity measurements.Comment: 3 pp. 3rd International Particle Accelerator Conference (IPAC 2012) 20-25 May 2012, New Orleans, Louisian

Effect of Larval Swimming Duration on Success of Metamorphosis and Size of the Ancestrular Lophophore in \u3cem\u3eBugula neritina\u3c/em\u3e (Bryozoa)

There is a growing realization that events during one portion of an organism\u27s life cycle can have both subtle and dramatic effects on other stages in the life history. Lethal and sublethal effects associated with the duration of larval swimming in marine invertebrates were examined for the bryozoan Bugula neritina. Larvae were kept swimming up to a maximum of 28 h at 20{deg}C by exposure to continuous bright fluorescent illumination. At 4-h intervals, samples of 20-40 larvae were removed from bright illumination and were exposed to seawater containing 10 mM excess KCI, an inducer of metamorphosis in this species. Over the first 12 h of larval swimming, an average of about 90% of the larvae initiated and completed metamorphosis; at 16 h, the percentage of larvae initiating and completing metamorphosis dropped significantly. By 28 h, about half of the larvae were initiating metamorphosis, whereas only one-fifth were completing metamorphosis. Larval swimming duration also significantly affected the duration of metamorphosis. By 30 h of larval swimming, individuals were taking about 25% longer to complete metamorphosis. Compared to ancestrulae that developed from larvae that were induced to metamorphose shortly after the onset of swimming, those that swam for greater than 8 h had significantly smaller lophophores. For example, by 28 h of larval swimming the ancestrular lophophore decreased in height, surface area, and volume by about 25%, 40% and 55%, respectively. This marked decrease in lophophore size may ultimately affect the ability of juveniles to sequester food, compete for space, and attain reproductive maturity. Thus, increasing the duration of larval swimming affects both metamorphosis and the development of postlarval structures, which may ultimately influence colony fitness

Two prehistoric archeological sites in Egyptian Nubia

The Yale University Prehistoric Expedition to Nubia was part of UNESCO\u27S international program to salvage the monuments of Nubia, with the direct aid of the Department of Antiquities of the United Arab Republic…

Broad-band chopper for a CW proton linac at Fermilab

Requirements and technical limitations to the bunch-by-bunch chopper for the Fermilab Project X are discussed.Comment: 3 pp. Particle Accelerator, 24th Conference (PAC'11) 2011. 28 Mar - 1 Apr 2011. New York, US

Dosimetric implications of the potential radionuclidic impurities in 153Sm-DOTMP

Wendt RE, Ketring AR, Frank RK, Simón J. Dosimetric implications of the potential radionuclidic impurities in 153Sm-DOTMP. Applied Radiation and Isotopes. 2022/07/01/ 2022;185:110246. doi:https://doi.org/10.1016/j.apradiso.2022.110246https://openworks.mdanderson.org/mdacc_imgphys_pubs/1000/thumbnail.jp