497 research outputs found
Rethinking Shelving: Making Your Children’s Collections User-Friendly
No full textIt was the princesses that did it. About five years ago it seemed like every day a different little girl would come up to the children’s desk and want help finding picture books about princesses. I could do pretty well with trucks and trains because I knew enough books by author and could jump from Barton to Crews to McMullen until I found one. But I only knew a few princess books, and they were always checked out. And that was the final straw that led us to create our “Picture Book Topics” section. Soon we had a new “Pink” section filled with princesses, mermaids, and stories about girls who like sparkly things. It became and remains one of the most heavily used collections in the library.
We’ve added other new sections to our children’s collection in the past five years, including leveled early readers, a “Non-Fiction Series” area, and fiction staff picks by grade level and genre. All of the changes were spurred by asking a few basic questions about what happens at the Children’s Desk:
• How do kids (and sometimes their grownups) describe the books they want?
• Do we arrange the collection in ways that match those descriptions?
• If our collection arrangement doesn’t match a user’s questions, can we change it
Einsatz eines ringabbildenden Cherenkovzaehlers zur Suche nach dem exotischen Zustand U(3100)
No full textAvailable from TIB Hannover: DW 9323 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman
Experimental Techniques
No full text. In this course we will give examples for experimental techniques used in particle physics experiments. After a short introduction, we will discuss applications in silicon microstrip detectors, wire chambers, and single photon detection in Ring Imaging Cherenkov (RICH) counters. A short discussion of the relevant physics processes, mainly different forms of energy loss in matter, is enclosed. INTRODUCTION In this course we will not try to reproduce standard text books about detectors (see for example [1,2]) and descriptions of interaction with matter (a good summary can be found in [3]), covering in great details all aspects of experimental high energy physics. Due to the time restrictions (3 \Theta 50 min were assigned by the organizers for this course) we will rather discuss examples on the use of some detector families. The selection is highly biased, since the author decided to use examples he knows best, e.g. he either worked on some of the detectors directly, or they were ..
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Charm and bottom production in FNAL fixed target experiments
No full textIn this talk we will review current results concerning bottom and charm physics from Fermilab Fixed Target experiments E672/E706, E769, E771, E781 (SELEX), E789, D791, E831 (FOCUS). Both production and decay physics will be reviewed. Results from Charmonium production will be presented in another talk at this conference
Instrumentation
No full textIn this course, given at the school in 3 parts of 75 minutes each, we will discuss the physics of particle detection, the basic designs and working principles of detectors, and, as an example with more details, some detectors for particle identification
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The E781 (SELEX) RICH detector
No full textFirst results from a new RICH detector, operating in an experiment currently taking data - Fermilab E781 (SELEX), are presented. The detector utilizes a matrix of 2848 phototubes for the photocathode. In a 650 GeV/c ?r- beam the number of photons detected is 14 per ring, giving a Figure of Merit No of 106 cm-`. The ring radius resolution obtained is 1.2 %. Results showing the particle identification ability of the detector are discussed
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The E781 trigger and data acquisition system
No full textThe trigger and data acquisition system of Fermilab Experiment 781 (SELEX), a high statistics charm baryon experiment scheduled to run in the next Fermilab fixed target run in 1996, is briefly described. The first and second level hardware triggers are expected to reduce the trigger rate by at least a factor of 10 compared to the interaction rate. A third level software trigger searching for secondary vertices is expected to cut by another factor of 40
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