Nick Ellis

A simulation strategy for fleet dynamics in Australia's northern prawn fishery: effort allocation at two scales (2009)

Venables, William N., Ellis, Nick, Punt, André E., Dichmont, Catherine M., Deng, Roy A.

Venables, W. N., Ellis, N., Punt, A. E., Dichmont, C. M., and Deng, R. A. 2009. A simulation strategy for fleet dynamics in Australia’s northern prawn fishery: effort allocation at two scales. –...

Different responses to area closures and effort controls for sedentary and migratory harvested species in a multispecies coral reef linefishery (2009)

Little, L. Richard, Punt, André E., Mapstone, Bruce D., Begg, Gavin A., Goldman, Barry, Ellis, Nick

Little, L. R., Punt, A. E., Mapstone, B. D., Begg, G. A., Goldman, B., and Ellis, N. 2009. Different responses to area closures and effort controls for sedentary and migratory harvested species in a...

Commissioning of the ATLAS Level-1 Central Trigger (2008)

Berge, D, Ehrenfeld, W, Ellis, Nick, Farthouat, P, Fischer, G, Haas, S, ...

The ATLAS Level-1 Central Trigger (L1CT) consists of the Central Trigger Processor (CTP) and the Muon to Central Trigger Processor Interface (MUCTPI). The CTP forms the final Level-1 Accept (L1A)...

'What the hell is that?': the representation of professional service markets in The Simpsons. (2008)

Ellis, Nick

This is the author's final draft of the paper published as Organization, 2008, 15 (5), pp. 705-723. The final version is available from http://org.sagepub.com/cgi/content/abstract/15/5/705. Doi:...

The ATLAS central level-1 trigger logic and TTC system (2008)

Ask, S, Berge, D, Borrego-Amaral, P, Caracinha, D, Ellis, Nick, Farthouat, P, ...

The ATLAS central level-1 trigger logic consists in the Central Trigger Processor and the interface to the detector-specific muon level-1 trigger electronics. It is responsible for forming a level-1...

Integration of the Trigger and Data Acquisition Systems in ATLAS (2008)

Abolins, M, Adragna, P, Aleksandrov, E, Aleksandrov, I, Amorim, A, Anderson, K, ...

During 2006 and the first half of 2007, the installation, integration and commissioning of trigger and data acquisition (TDAQ) equipment in the ATLAS experimental area have progressed. There have...

A Coincidence Array Demonstrator ASIC for the RD27 Muon Trigger (2007)

John Dowdell, Alan Letchford, Ettore Gennari, Emilio Petrolo, Stefano Veneziano, Nick Ellis

this document alone. Denote the input vectors as X and Y. X has n bits, Y has m. The output vector is denoted Z and has n

Commissioning of the ATLAS Level-1 Central Trigger (2007)

Pauly, T, Ask, S, Berge, D, Ellis, Nick, Farthouat, P, Gällnö, P, ...

The ATLAS Level-1 Central Trigger consists of the Central Trigger Processor (CTP) and the Muon-to-CTP-Interface (MUCTPI). The CTP receives trigger information from the Level-1 Calorimeter Trigger...

The ATLAS Level-1 Trigger: Status of the System and First Results from Cosmic-Ray Data (2007)

Berge, D, Aielli, G, Andrei, V, Achenbach, R, Adragna, P, Aloisio, A, ...

The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing at 40 MHz. At the design luminosity of 10^34 cm^-2 s^-1 there are on average...

Effects of fish density distribution and effort distribution on catchability (2007)

Ellis, Nick, Wang, You-Gan

Ellis, N., and Wang, Y-G. 2007. Effects of fish density distribution and effort distribution on catchability – ICES Journal of Marine Science, 64, 178–191. The effects of fish density...

2nd CERN-Fermilab Hadron Collider Physics Summer School (2006)

David Jacobs, Gian Giudice, Ellis, Nick, Jakobs, Karl, Mage, Patricia, Seymour, Michael H, ...

For the past few years, experiments at the Fermilab Tevatron Collider have once again been exploring uncharted territory at the current energy frontier of particle physics. With CERN's LHC operations...

Implementation and performance of a tau lepton selection within the ATLAS trigger system at the LHC (2006)

Casado, M P, Dos Anjos, A, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS experiment at the Large Hadron Collider (LHC) has an interaction rate of up to $10^9$ Hz. The trigger must efficiently select interesting events while rejecting the large amount of...

Testing on a Large Scale (2006)

Burckhart-Chromek, Doris, Abolins, M, Adragna, P, Albuquerque-Portes, M, Alexandrov, L, Amorim, A, ...

The ATLAS Data Acquisition (DAQ) and High Level Trigger (HLT) software system will be comprised initially of 2000 PC nodes which take part in the control, event readout, second level trigger and...

Testing on a Large Scale: Running the ATLAS Data Acquisition and High Level Trigger Software on 700 PC Nodes (2006)

Burckhart-Chromek, Doris, Abolins, M, Adragna, P, Alexandrov, L, Amorim, A, Armstrong, S, ...

The ATLAS Data Acquisition (DAQ) and High Level Trigger (HLT) software system will be comprised initially of 2000 PC nodes which take part in the control, event readout, second level trigger and...

A configuration system for the ATLAS trigger (2006)

Dos Anjos, A, Ellis, Nick, Haller, J, Höcker, A, Kohno, T, Landon, M, ...

The ATLAS detector at CERN's Large Hadron Collider will be exposed to proton-proton collisions from beams crossing at 40 MHz that have to be reduced to the few 100 Hz allowed by the storage systems....

Effects of fish density distribution and effort distribution on catchability (2006)

Ellis, Nick, Wang, You-Gan

Ellis, N., and Wang, Y-G. 2007. Effects of fish density distribution and effort distribution on catchability - ICES Journal of Marine Science, 64. The effects of fish density distribution and effort...

The first-level trigger of ATLAS (2005)

Haller, J, Achenbach, R, Aielli, G, Aloisio, A, Alviggi, M G, Aprodu, V, ...

Due to the huge interaction rates and the tough experimental environment of pp collisions at a centre-of-mass energy sqrt(s)=14 TeV and luminosities of up to 10^34cm^-2s^-1, one of the experimental...

ATLAS Level-1 Trigger Timing-In Strategies (2005)

Pauly, Thilo, Borrego-Amaral, P, Ask, S, Ellis, Nick, Farthouat, P, Gällnö, P, ...

The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a bunch-crossing rate of 40 MHz. In order to reduce the data rate, a three-level trigger system selects potentially...

ATLAS Level-1 Trigger Timing-In Strategies (2005)

Pauly, Thilo, Borrego-Amaral, P, Ask, S, Ellis, Nick, Farthouat, P, Gällnö, P, ...

The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a bunch-crossing rate of 40 MHz. In order to reduce the data rate, a three-level trigger system selects potentially...

Configuration of the ATLAS Trigger (2005)

Spiwoks, Ralf, Dos Anjos, A, Ellis, Nick, Haller, J, Iqbal, N, Landon, M, ...

The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a rate of 40 MHz. In order to reduce the data rate, only potentially interesting events are selected by a three-level...

The ATLAS Level-1 Central Trigger Processor (CTP) (2005)

Spiwoks, Ralf, Ask, S, Ellis, Nick, Farthouat, P, Gällnö, P, Haller, J, ...

The ATLAS Level-1 Central Trigger Processor (CTP) combines information from calorimeter and muon trigger processors and makes the final Level-1 Accept (L1A) decision on the basis of lists of...

Configuration of the ATLAS Trigger (2005)

Spiwoks, Ralf, Dos Anjos, A, Ellis, Nick, Haller, J, Iqbal, N, Landon, M, ...

The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a rate of 40 MHz. In order to reduce the data rate, only potentially interesting events are selected by a three-level...

The ATLAS Level-1 Central Trigger Processor (CTP) (2005)

Spiwoks, Ralf, Ask, S, Ellis, Nick, Farthouat, P, Gällnö, P, Haller, J, ...

The ATLAS Level-1 Central Trigger Processor (CTP) combines information from calorimeter and muon trigger processors and makes the final Level-1 Accept (L1A) decision on the basis of lists of...

Configuration of the ATLAS trigger (2005)

Haller, J, Dos Anjos, A, Ellis, Nick, Landon, M, Spiwoks, R, Wengler, T, ...

The ATLAS detector at CERN's LHC will be exposed to proton-proton collisions at a rate of 40 MHz. In order to reduce the data rate to about 200 Hz, only potentially interesting events are selected by...

Implementation and Performance of the Seeded Reconstruction for the ATLAS Event Filter Selection Software (2005)

Santamarina-Rios, C, Conde-Muíño, P, Dos Anjos, A, Armstrong, S, Baines, J T M, Bee, C P, ...

ATLAS is one of the four LHC experiments that will start data taking in 2007, designed to cover a wide range of physics topics. The ATLAS trigger system has to cope with a rate of 40 MHz and 23...

Overview of the High-Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC (2005)

Gesualdi-Mello, A, Anjos, A, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center-of-mass energy, whilst...

Implementation and Performance of the High Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC (2005)

Schiavi, C, Armstrong, S, Dos Anjos, A, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center of mass energy, while rejecting...

Implementation and Performance of the High Level Trigger Electron and Photon Selection for the ATLAS Experiment at the LHC (2005)

Schiavi, C, Armstrong, S, Dos Anjos, A, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center of mass energy, while rejecting...

A Level-2 trigger algorithm for the identification of muons in the ATLAS Muon Spectrometer (2005)

Di Mattia, A, Armstrong, S, Dos Anjos, A, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS Level-2 trigger provides a software-based event selection after the initial Level-1 hardware trigger. For the muon events, the selection is decomposed in a number of broad steps: first, the...

A Level-2 trigger algorithm for the identification of muons in the ATLAS Muon Spectrometer (2005)

Di Mattia, A, Armstrong, S, Dos Anjos, A, Baines, J T M, Bee, C P, Biglietti, M, ...

The ATLAS Level-2 trigger provides a software-based event selection after the initial Level-1 hardware trigger. For the muon events, the selection is decomposed in a number of broad steps: first, the...

Portable Gathering System for Monitoring and Online Calibration at ATLAS (2004)

Conde-Muíño, P, Armstrong, S, Dos Anjos, A, Baines, J T M, Bee, C P, Biglietti, M, ...

During the runtime of any experiment, a central monitoring system that detects problems as soon as they appear has an essential role. In a large experiment, like ATLAS, the online data acquisition...

The ATLAS Local Trigger Processor (LTP) 018 (2004)

Borrego-Amaral, P, Ellis, Nick, Farthouat, Philippe, Gällnö, P, Pessoa-Lima, H, Maeno, T, ...

The Local Trigger Processor (LTP) receives timing and trigger signals from the Central Trigger Processor (CTP) and injects them into the Timing, Trigger and Control (TTC) system of a sub-detector...

The ATLAS Level-1 Central Trigger System 012 (2004)

Borrego-Amaral, P, Ellis, Nick, Farthouat, Philippe, Gällnö, P, Haller, J, Maeno, T, ...

The central part of the ATLAS Level-1 trigger system consists of the Central Trigger Processor (CTP), the Local Trigger Processors (LTPs), the Timing, Trigger and Control (TTC) system, and the...

Trigger systems at hadron super-colliders (2004)

Ellis, Nick

This paper discusses the techniques used in state-of-the-art trigger systems, such as those currently under development for experiments at the Large Hadron Collider (LHC), and describes the new...

An Overview of the ATLAS High Level Trigger Dataflow and Supervision (2003)

Wheeler, S, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The ATLAS High Level Trigger (HLT) system provides software-based event selection after the initial LVL1 hardware trigger. It is composed of two stages, the LVL2 trigger and the Event Filter (EF)....

An Overview of Algorithms for the ATLAS High Level Trigger (2003)

Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, Boisvert, V, ...

Following rigorous software design and analysis methods, an object-based architecture has been developed to derive the second- and third-level trigger decisions for the future ATLAS detector at the...

Studies for a common selection software environment in ATLAS: from the Level-2 Trigger to the offline reconstruction (2003)

Wiedenmann, W, Armstrong, S R, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The Atlas High Level Trigger's primary function of event selection will be accomplished with a Level-2 trigger farm and an Event Filter farm, both running software components developed in the Atlas...

Architecture of the ATLAS High Level Trigger Event Selection Software (2003)

Grothe, M, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The ATLAS High Level Trigger (HLT) consists of two selection steps: the second level trigger and the event filter. Both will be implemented in software, running on mostly commodity hardware. Both...

Architecture of the ATLAS High Level Trigger Event Selection Software (2003)

Grothe, M, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The ATLAS High Level Trigger (HLT) consists of two selection steps: the second level trigger and the event filter. Both will be implemented in software, running on mostly commodity hardware. Both...

The Algorithm Steering and Trigger Decision mechanism of the ATLAS High Level Trigger (2003)

Comune, G, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

Given the extremely high output rate foreseen at LHC and the general-purpose nature of ATLAS experiment, an efficient and flexible way to select events in the High Level Trigger is needed. An...

The Algorithm Steering and Trigger Decision mechanism of the ATLAS High Level Trigger (2003)

Comune, G, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

Given the extremely high output rate foreseen at LHC and the general-purpose nature of ATLAS experiment, an efficient and flexible way to select events in the High Level Trigger is needed. An...

Supervision of the ATLAS High Level Trigger System (2003)

Wheeler, S, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The ATLAS High Level Trigger (HLT) system provides software-based event selection after the initial LVL1 hardware trigger. It is composed of two stages, the LVL2 trigger and the Event Filter. The HLT...

Supervision of the ATLAS High Level Trigger System (2003)

Wheeler, S, Armstrong, S, Baines, J T M, Bee, C P, Biglietti, M, Bogaerts, A, ...

The ATLAS High Level Trigger (HLT) system provides software-based event selection after the initial LVL1 hardware trigger. It is composed of two stages, the LVL2 trigger and the Event Filter. The HLT...

B-physics in the LHC experiments (2000)

Ellis, Nick

This paper gives an overview of the anticipated B-physics programme in the LHC experiments, covering the general-purpose experiments ATLAS and CMS, as well as the dedicated B-physics experiment LHCb.

A Demonstrator for the ATLAS Level-1 Muon to Central Trigger Processor Interface (MUCTPI) (2000)

Corre, A, Ellis, Nick, Farthouat, Philippe, Hasegawa, Y, Schuler, G A, Schwick, C, ...

The Level-1 Muon Trigger Interface (MUCTPI) to the Central Trigger Processor (CTP) receives trigger information from the detector- specific logic of the muon trigger. This information contains up to...

The Trigger Menu Handler of the ATLAS Level-1 Central Trigger Processor (2000)

Ellis, Nick, Farthouat, Philippe, Schuler, G A, Spiwoks, R

The role of the Central Trigger Processor (CTP) in the ATLAS Level-1 trigger is to combine information from the calorimeter and muon trigger processors, as well as from other sources, e.g....

B decays (2000)

Ball, P, Fleischer, Robert, Tartarelli, F, Vikas, P, Wilkinson, G R, Baines, J T M, ...

We review the prospects for B decay studies at the LHC. Contributing authors: J. Baines, S.P. Baranov, P. Bartalini, M. Beneke, E. Bouhova, G. Buchalla, I. Caprini, F. Charles, J. Charles, Y. Coadou,...

Bottom Production (2000)

Nason, P, Ridolfi, G, Schneider, O, Tartarelli, F, Vikas, P, Baines, J T M, ...

We review the prospects for bottom production physics at the LHC. Members of the working group who has contributed to this document are: J. Baines, S.P. Baranov, P. Bartalini, A. Bay, E. Bouhova, M....

Atlas Meeting (2000)

Schaffer, R D, Caprini, M, Ellis, Nick, Gee, N, Robins, S A, Tapprogge, Stefan

-ATLAS object oriented software and database -Overview of LVL1,CTP and TTC -LVL1 calorimeter -LVL1 Muon spectrometer -LVL2 pilot project -DAQ/event filter -1 and DCS -