Tuning the GENIE Pion Production Model with MINERvA Data

Faced with unresolved tensions between neutrino interaction measurements at few-GeV neutrino energies, current experiments are forced to accept large systematic uncertainties to cover discrepancies between their data and model predictions. In this paper, the widely used pion production model in GENIE is compared to four MINERvA charged current pion production measurements using NUISANCE. Tunings, ie, adjustments of model parameters, to help match GENIE to MINERvA and older bubble chamber data are presented here. We find that scattering off nuclear targets as measured in MINERvA is not in good agreement with scattering off nucleon (hydrogen or deuterium) targets in the bubble chamber data. An additional ad hoc correction for the low-$Q^2$ region, where collective effects are expected to be large, is also presented. While these tunings and corrections improve the agreement of GENIE with the data, the modeling is imperfect. The development of these tunings within the NUISANCE frameworkallows for straightforward extensions to other neutrino event generators and models, and allows omitting and including new data sets as they become available

Analysis of the diffraction pattern for optimal assist feature placement

International audienceAssist features (AF) are an essential component of reticle enhancement techniques. Their use is indispensable in sub-100 nm technologies to ensure a maximum process window (PW) across chip, especially for critical levels. Indeed, AF, which can be binary, attenuated or phase-shifted, help in providing a larger PW to the features they assist when they are used in conjunction with off-axis illumination. The depth of focus (DOF) of an isolated structure is improved by the presence of AF by providing to the optical system a diffraction pattern close to the diffraction pattern of a dense structure. The resulting DOF and exposure latitude (EL) are dependent on the relative position of the AF from the main feature. Moreover, the PW varies while inserting one, two or more AF. The relative position of each influences the results. In this paper, a method will be detailed to optimise the placement of the AF. For the purpose of this study, the diffraction pattern induced by the insertion of one or several AF is analysed in frequency space. This analysis details the evolution of the intensity of even and odd orders during the insertion of AF. The calculation of the optimum placement is detailed, and the DOF resulting from the insertion of one or more AF is also presented

Looking through the Window of Opportunity: The Cultural Cleansing of Workplace Identity

This article emerges from a project that examines the relationship between forms of labour, in the context of managerially directed organisational and cultural change, in a light engineering firm on Tyneside. This material is situated within contemporary and historical accounts of workplace interaction. The paper will address the new emphasis on culture and its manipulation, that is increasingly forming a locus of interest in current literature. Whilst stressing that there is much in these accounts that was common in earlier writing the paper draws out what is distinctive about contemporary concerns. These issues are developed in the empirical account through an analysis of the manipulation of difference along the axes of gender, age and skill. The findings are located within a wider framework of the shift from post figurative to cofigurative culture. In this view there is a reworking of both the substantive relations between generations and in the form of relationships of age and gender. The result of this analysis is an account which, whilst stressing the radical change that has taken place nevertheless recognises that even the `cleansed culture' is subject to contradictions stemming from the employment relationship. Further, that within the context of the social reproduction of the workplace, shopfloor experience is chronically implicated in the construction of autonomous cultures. As such the analysis provides a more positive interpretation of resistance to such change than that available in many recent accounts