12,373 Works

Particular relative positions of low energy levels in the h/sub 11/2/ band structure of /sup 119/Xe: experiment and IBFA calculations

J Gizon, A Gizon, J Crawford, M A Cunningham & V Barci
The level ordering of the lowest members in the h/sub 11/2/ band structure of /sup 119/Xe is discussed and compared with those of xenon isotopes and isotones. A description is given in terms of the interacting boson fermion model. (5 refs).

Fermilab pp.bar. collider

Alvin V Tollestrup

Formation experiments in the U-region

A Astbury
The author analyses literature experiments in a search for evidence for the existence of the U-meson. The analysis shows that there is a broad enhancement in the U-region but no narrow state. The question of whether or not it is a resonance remains open. (28 refs).

The decay of a new nuclide: /sup 71/Br

J C Hardy, H C Evans, E Hagberg, H Schmeing, K S Sharma, E T H Clifford, U J Schrewe & V T Koslowsky
The decay of mass-separated samples of the previously unknown nuclide /sup 71/Br have been investigated by means of the Chalk River on-line isotope separator. Eleven gamma -transitions were assigned to the decay of this nuclide and its half-life was measured to be 21.4+or-0.6 s. A simple decay scheme for /sup 71/Br has been constructed incorporating six levels in its daughter, /sup 71/Se. The half-life of the first excited state in /sup 71/Se was measured to...

The LEP-JET Detector: Event Simulations and Particle Tracking

Daniel Drijard, Pier Giorgio Innocenti & H Grote

Radio-frequency quadrupole linacs

A Schempp

A calorimeter trigger system for the ISR Axial Field Spectrometer

L Rosselet
A fast and flexible trigger processor system designed to run in parallel up to 51 different types of trigger is used in a large hadron calorimeter experiment at CERN-ISR. A very fast data bus connected to 255 10 bit address ECL memory chips allows programmable selection of events according to their topology and energy pattern in less than 150 ns. In addition this system can interrogate two programmable processors (ESOP) to isolate events characterized by...

The new particles

Bjørn Haavard Wiik

BaBar Bookkeeping - a distributed meta-data catalog of the BaBar event store

G Dubois-Felsmann, W Röthel, D Kovalskyi, P Jackson, T Adye, D Smith, A Forti, D E Hutchcroft, D Bukin & A Ceseracciu

Study of the fragmentation p-K/sup -/ to Lambda /sup 0/ and K/sup -/-p to Lambda /sup 0/ at 4.2 GeV/c

S Nilsson
The inclusive production of Lambda 0 by kaons on protons is investigated, at 4.2 GeV/c with emphasis on the Lambda /sup 0/ particles coming from target and beam fragmentation. (10 refs).

HimalDoc poster presented at Open Repositories 2014

Anil Kumar Jha
The International Centre for Integrated Mountain Development (ICIMOD), based in Kathmandu, Nepal, is a regional intergovernmental learning and knowledge sharing centre serving eight countries in the Hindu Kush Himalayas. The HKH region is the source of 10 large Asian river systems that provide water, ecosystem services, and the basis for livelihoods to more than 210 million people. Global warming and its impact on Himalayan glaciers and mountain ecosystems has now become a global concern. ICIMOD...

TTC challenges and upgrade for the LHC

Sophie Baron

Vacuum Issues for an LHC Upgrade

Oswald Gröbner

Achieving Best Performance with VME-based Data Acquisition Systems and 2eSST

A Aloisio, R Giordano, L Capasso & V Izzo
fastest block transfer cycle offered by the VME64x standard. The maximum achievable data-rate foreseen by the protocol is 320 MByte/s. In this paper we present a reference design based on a FPGA, for the reader willing to implement 2eSST in his VME64x application. By using this template, we have designed a custom Bit Error Rate Tester, in order to probe the block transfer reliability within and beyond the data rate limit presently set by the...

The ATLAS Radiation Dose Measurement System and its Extension to SLHC Experiments

J Hartert, J Bronner, M Mikuz, G Kramberger, A Gorisek, V Cindro & I Mandic

Stacked Tracking for CMS at Super-LHC

B Constance, A Rose, G Foudas, K Zhu, C Foudas, John Jones & M Raymond
We report recent work on the design of a pixel detector for CMS at the Super-LHC. This work builds on previous studies of a tracking detector capable of providing track stubs to be used in the Level-1 Trigger (L1T). We now focus on the use of two ‘superlayers’ of tracking; each comprising a pair of pixel sensors with 50×50×50μm3 pitch (z×φ×r) separated by a few millimetres. Preliminary work on track reconstruction in Field Programmable Gate...

NESTOR participation in the KM3NeT

E Anassontzis
The NESTOR Collaboration is a leading participant in the Design Study of the KM3NeT, the European Deep Sea Neutrino Telescope. In this report we describe briefly the KM3NeT and the NESTOR experience and contribution towards this objective; the 4500m deep NESTOR site, the star-like detector, the deployment and recovery of telescope modules and the "DELTA-BERENIKE", the specially constructed deployment ship.

Possible scenarios for the LHC injector upgrade

Walter Scandale
The possible upgrade of the LHC injector chain is a crucial step towards the LHC luminosity upgrade beyond 1034 cm-2s-1. It is also a mandatory requirement for the LHC energy upgrade well beyond the ultimate value of 7.56 TeV per beam. By pushing the accelerator parameters to the ultimate performance we can increase to 1.7×1011 the bunch population and eventually reach a peak luminosity of 2.3×1034 cm-2s-1. To go beyond, a considerable improvement of the...

LARP Long $Nb_{3}Sn$ Quadrupole

G Ambrosio
A major milestone for the LHC Accelerator Research Program (LARP) is the test, by the end of 2009, of two 4m-long quadrupole magnets (LQ) wound with Nb3Sn conductor. The goal of these magnets is to be a proof of principle that Nb3Sn is a viable technology for a possible LHC luminosity upgrade.

Completion of the Muon Barrel Alignment System and its integration into the CMS detector environment

J Imrek, P Raics, B Ujvári, G Christian, N Béni, D Novák, J Pálinkás, Zs Szabó, G Székely, G L Bencze, J Molnár & Z Szillási
v During the past years our group has built, calibrated, and finally installed all the components of the Muon Barrel Alignment System for the CMS experiment. This paper covers the results of the hardware commissioning, the full system setup and the connection to the CMS Detector Control System (DCS). The step-by-step operation of the system is discussed: from collecting the analog video signals and preprocessing the observed LED images, through controlling the front-end PCs, to...

IHEP experimental programme (status and outlook)

Yu Ryabov
The IUHEP U-70 accelerator is a proton synchrotron with strong focusing which provides protons accelerated up to 76 GeV. The synchrotron ring electromagnet consists of 120 units with a total circumference of 1483.6 m. A 100 MeV proton linac is used as an injector for the synchrotron. The cycle time of the proton synchrotron is 8.7 s. The author discusses the particle beams of the IHEP accelerator and the physics programme.

Low-loss wire design for the DiSCoRaP dipole

G Volpini, M N Wilson, G Bellomo, J Kaugerts, P Fabbricatore, R Musenich, U Gambardella, G Moritz, F Alessandria, M Sorbi & S Farinon
The SIS-300 synchrotron of the new FAIR facility at GSI (Germany) will use fast-cycled superconducting magnets. Its dipoles will be pulsed at 1 T/s; for comparison, LHC is ramped at 0.007 T/s and RHIC at 0.042 T/s. Within the frame of a collaboration between INFN and GSI, INFN has funded the project DISCORAP (DIpoli SuperCOnduttori RApidamente Pulsati, or Fast Pulsed Superconducting Dipoles) whose goal is to design, construct and test a half-length (4 m), curved,...

RF Issues and Developments at the LHC Machine

L Arnaudon, J Molendijk, P Baudrenghien & A Butterworth
The main RF system of the LHC, which uses 400MHz superconducting cavities, will be used to capture, accelerate and store the injected beam. A separate transverse damper system using electrostatic deflectors will be used to damp transverse oscillations. The associated low-level RF (LLRF) equipment is responsible for fast control of the accelerating voltage and phase in the cavities, the phase and radial position of the beam, and the synchronization of beam transfers between SPS and...

Summary of session 2: high intensity effects

Giovanni Rumolo & F Ruggiero
The CARE-HHH-APD workshop LHC-LUMI-05 on Scenarios for the LHC Luminosity Upgrade was held in Arcidosso, Italy, from August 31st to September 3rd, 2005. The workshop was organized in four plenary morning sessions supported by afternoon sessions of two parallel working groups on LHC IR Upgrade and High Energy Injectors. In this report we review the presentations and discussions in Session 2, devoted to High-Intensity Effects, emphasizing the suggestions for future studies and pointing out the...

The Sorter Electronic Boards for the Endcap Cathode Strip Chamber System at CMS

P Padley, G Pawloski, S J Lee & Mikhael Matveev

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