arXiv subjects

C. Grandi

Publications and source records attributed to C. Grandi.

4 recordsLinked to original sources

arXiv2013

SuperB Technical Design Report

In this Technical Design Report (TDR) we describe the SuperB detector that was to be installed on the SuperB e+e- high luminosity collider. The SuperB asymmetric collider, which was to be constructed on the Tor Vergata campus near the INFN Frascati National Laboratory, was designed to operate both at the Upsilon(4S) center-of-mass energy with a luminosity of 10^{36} cm^{-2}s^{-1} and at the tau/charm production threshold with a luminosity of 10^{35} cm^{-2}s^{-1}. This high luminosity, producing a data sample about a factor 100 larger than present B Factories, would allow investigation of new physics effects in rare decays, CP Violation and Lepton Flavour Violation. This document details the detector design presented in the Conceptual Design Report (CDR) in 2007. The R&D and engineering studies performed to arrive at the full detector design are described, and an updated cost estimate is presented. A combination of a more realistic cost estimates and the unavailability of funds due of the global economic climate led to a formal cancelation of the project on Nov 27, 2012.

physics.ins-det↗

arXiv2003

Running CMS software on GRID Testbeds

Starting in the middle of November 2002, the CMS experiment undertook an evaluation of the European DataGrid Project (EDG) middleware using its event simulation programs. A joint CMS-EDG task force performed a "stress test" by submitting a large number of jobs to many distributed sites. The EDG testbed was complemented with additional CMS-dedicated resources. A total of ~ 10000 jobs consisting of two different computational types were submitted from four different locations in Europe over a period of about one month. Nine sites were active, providing integrated resources of more than 500 CPUs and about 5 TB of disk space (with the additional use of two Mass Storage Systems). Descriptions of the adopted procedures, the problems encountered and the corresponding solutions are reported. Results and evaluations of the test, both from the CMS and the EDG perspectives, are described.

physics.comp-ph↗

arXiv2003

BOSS: a tool for batch job monitoring and book-keeping

BOSS (Batch Object Submission System) has been developed to provide real-time monitoring and bookkeeping of jobs submitted to a compute farm system. The information is persistently stored in a relational database (MySQL in the current version) for further processing. By means of user-supplied filters, BOSS extracts the specific job information to be monitored from the standard input, output and error of the job itself and stores it in the database in a structured form that allows easy and efficient access. BOSS has been successfully used by all CMS Regional Centers for managing Monte Carlo data productions in 2002. Furthermore in fall 2002 it has been used in a prototype of the CMS production system deployed on the European DataGrid test bed demonstrating its ability to be used also in a grid environment.

hep-ex↗

arXiv2003

Plans for the Integration of grid tools in the CMS computing environment

The CMS collaboration has a long term need to perform large-scale simulation efforts, in which physics events are generated and their manifestations in the CMS detector are simulated. Simulated data are then reconstructed and analyzed by the physicists to support detector design and the design of the real-time event filtering algorithms that will be used when CMS is running. Up to year 2002 the distribution of tasks among the different regional centers has been done mainly through manual operations, even though some tools for data transfer and centralization of the book-keeping were developed. In 2002 the first prototypes of CMS distributed productions based on grid middleware have been deployed, demonstrating that it is possible to use them for real data production tasks. In this work we present the plans of the CMS experiment for building a production and analysis environment based on the grid technologies in time for the next big Data Challenge, which is foreseen for the beginning of year 2004.

hep-ex↗