S. Hellman

Publication List Details

Period

1973 - 2008

Number

201

Co-Authors

Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics (2008)

Abat, E., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., ...

A detailed study is presented of the expected performance of the ATLAS detector. The reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together with the performance...

Evaluation of Fermi Read-out of the Atlas Tilecal Prototype (2007)

J. A. Perlas, K. Anderson, H. Evans, J. Pilcher, F. Tang, R. Benetta, ...

Prototypes of the Fermi system have been used to read out a prototype of the Atlas hadron calorimeter in a beam test at the CERN SPS. The Fermi read-out system, using a compressor and a sampling ADC,...

ATLAS Level-1 Calorimeter Trigger System Architecture (2007)

Bright-Thomas Connors, P. Bright-thomas, A. Connors, J. Garvey, S. Hillier, R. Staley, ...

The Level-1 Calorimeter Trigger is a fast pipelined system for the selection of rare physics processes in the ATLAS experiment at LHC. Its selectivity contributes to a rate reduction from the 40 MHz...

The e/γ and τ/hadron Processor System for the ATLAS First-Level Trigger (2007)

V. Perera, J. Edwards, A. Gillman, R. Hatley, A. J. Maddox, ...

The e/g and t/hadron first-level trigger system for ATLAS will provide electron/photon and tau/hadron trigger multiplicity information to the Central Trigger Processor (CTP), and region of interest...

AN R&D PROGRAMME FOR ALTERNATIVE TECHNOLOGIES FOR THE ATLAS LEVEL 1 CALORIMETER TRIGGER (2007)

C. Bohm, M. Engstrm, S. Hellman, S-o. Holmgren, E. Johansson, N. Yamdagni, ...

This note describes a first-level calorimeter trigger processor designed to take advantage of new possibilities that arise as a consequence of modern design techniques and components such as optical...

RD27 note 34 ATLAS Note DAQ--NO--30 17 January 1995 THE LEVEL-1 CALORIMETER TRIGGER SYSTEM (2007)

For Atlas Brawn, I. P. Brawn, R. E. Carney, J. Garvey, D. Rees, R. Staley, ...

We describe the design of a digital calorimeter trigger processor system which could form a major part of the ATLAS level-1 trigger system. Utilising novel techniques, but with today's...

CERN/DRDC 93--32 RD-27 Status Report 11 August 1993 FIRST-LEVEL TRIGGER SYSTEMS FOR LHC EXPERIMENTS (2007)

Brawn Carney Ermoline, I. Brawn, R. E. Carney, Y. Ermoline, J. Garvey, D. Grant, ...

this report we describe the work that we have done so far, and propose a continued programme of work for the coming year

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...

High Density Backplanes: Problems and Solutions (2006)

Achenbach, R, Andrei, V, Barnett, B M, Bauss, B, Böhm, C, Booth, J R A, ...

The backplane and crate infrastructure for the digital processors of the ATLAS Level-1 Calorimeter Trigger (L1Calo) are presented, The L1Calo system is a compact, high-performance real-time system...

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...

A Step Towards A Computing Grid For The LHC Experiments: ATLAS Data Challenge 1 (2004)

Sturrock, R, Bischof, R, Epp, B, Ghete, V M, Kuhn, D, Mello, A G, ...

The ATLAS Collaboration at CERN is preparing for the data taking and analysis at the LHC that will start in 2007. Therefore, a series of Data Challenges was started in 2002 whose goals are the...

Use of an FPGA to identify electromagnetic clusters and isolated hadrons in the ATLAS level-1 calorimeter trigger (2004)

Garvey, J, Achenbach, R, Apostologlou, A, Barnett, B M, Bauss, B, Brawn, I P, ...

At the full LHC design luminosity of 10^34 cm^-2 s^-1 there will be approximately 10^9 proton-proton interactions per second. The ATLAS level-1 trigger is required to have an acceptance factor of...

ECOSTAR. Final report. (2004)

Alsmeyer, H., Albrecht, G., Meyer, L., Scholtyssek, W., Häfner, W., Journeau, C., ...

Contract FIKS-CT1999-00003. Ex-Vessel Core Melt Stabilization Research

ATLAS Level-1 Calorimeter Trigger: Subsystem Tests of a Jet/Energy-sum Processor Module (2003)

Garvey, J, Hillier, S J, Mahout, G, Moye, T H, Staley, R J, Watkins, P M, ...

The ATLAS Level-1 Calorimeter Trigger consists of a Preprocessor, a Cluster Processor (CP), and a Jet/Energy-sum Processor (JEP). The CP and JEP receive digitised trigger-tower data from the...

The ATLAS Level-1 Calorimeter Trigger Architecture (2003)

Garvey, J, Hillier, S J, Mahout, G, Moye, T H, Staley, R J, Watkins, P M, ...

The architecture of the ATLAS Level-1 Calorimeter Trigger system (L1Calo) is presented. Common approaches have been adopted for data distribution, result merging, readout, and slow control across the...

Atlas Data-Challenge 1 on NorduGrid (2003)

Eerola, P., Ekelof, T., Ellert, M., Hansen, J. R., Hellman, S., Konstantinov, A., ...

The first LHC application ever to be executed in a computational Grid environment is the so-called ATLAS Data-Challenge 1, more specifically, the part assigned to the Scandinavian members of the...

Atlas Data Challenge 1 on NorduGrid (2003)

P. Eerola, B. Kónya, O. Smirnova, T. Ekelöf, M. Ellert, J. R. Hansen, ...

The first LHC application ever to be executed in a computational Grid environment is the so-called ATLAS Data-Challenge 1, more specifically, the part assigned to the Scandinavian members of the...

A precise measurement of 180 GeV muon energy losses in iron (2001)

Amaral, P., Amorim, A., Anderson, K., Artikov, A., Benetta, R., Berglund, S., ...

The energy loss spectrum of 180 GeV muons has been measured with the 5.6 m long finely segmented Module 0 of the ATLAS hadron tile calorimeter at the CERN SPS. The differential probability dP/d nu...

A precise measurement of 180 GeV muon energy losses in iron (2001)

Amaral, P., Amorim, A., Anderson, K., Artikov, A., Benetta, R., Berglund, S., ...

The energy loss spectrum of 180 GeV muons has been measured with the 5.6 m long finely segmented Module 0 of the ATLAS hadron tile calorimeter at the CERN SPS. The differential probability dP/d nu...

A precise measurement of 180 GeV muon energy losses in iron (2001)

Amaral, P., Amorim, A., Anderson, K., Artikov, A., Benetta, R., Berglund, S., ...

The energy loss spectrum of 180 GeV muons has been measured with the 5.6 m long finely segmented Module 0 of the ATLAS hadron tile calorimeter at the CERN SPS. The differential probability dP/d nu...

A precise measurement of 180 GeV muon energy losses in iron (2001)

Amaral, P., Amorim, A., Anderson, K., Artikov, A., Benetta, R., Berglund, S., ...

The energy loss spectrum of 180 GeV muons has been measured with the 5.6 m long finely segmented Module 0 of the ATLAS hadron tile calorimeter at the CERN SPS. The differential probability dP/d nu...

A precise measurement of 180 GeV muon energy losses in iron (2001)

Amaral, P., Amorim, A., Anderson, K., Artikov, A., Benetta, R., Berglund, S., ...

The energy loss spectrum of 180 GeV muons has been measured with the 5.6 m long finely segmented Module 0 of the ATLAS hadron tile calorimeter at the CERN SPS. The differential probability dP/d nu...

Hadronic shower development in iron-scintillator tile calorimetry (2000)

Amaral, P., Amorim, A., Anderson, K., Barreira, G., Benetta, R., Berglund, S R., ...

The lateral and longitudinal profiles of hadronic showers detected by a prototype of the ATLAS Iron-Scintillator Tile Hadron Calorimeter have been investigated. This calorimeter presents a unique...

Hadronic shower development in iron-scintillator tile calorimetry (2000)

Amaral, P., Amorim, A., Anderson, K., Barreira, G., Benetta, R., Berglund, S R., ...

The lateral and longitudinal profiles of hadronic showers detected by a prototype of the ATLAS Iron-Scintillator Tile Hadron Calorimeter have been investigated. This calorimeter presents a unique...

Hadronic Shower Development in Iron-Scintillator Tile Calorimetry (1999)

Amaral, P, Amorim, A, Anderson, K, Barreira, G, Benetta, R, Berglund, S, ...

The lateral and longitudinal profiles of hadronic showers detected by a prototype of the ATLAS Iron-Scintillator Tile Hadron Calorimeter have been investigated. This calorimeter uses a unique...

Evaluation of Fermi Read-out of the ATLAS Tilecal Prototype (1998)

Agnvall, S, Ajaltouni, Ziad J, Albiol, F, Alifanov, A, Amaral, P, Amelin, D V, ...

Prototypes of the \fermi{} system have been used to read out a prototype of the \atlas{} hadron calorimeter in a beam test at the CERN SPS. The \fermi{} read-out system, using a compressor and a 40...

Evaluation of FERMI read-out of the ATLAS tilecal prototype (1998)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amelin, D., Amorim, A., ...

Prototypes of the FERMI system have been used to read out a prototype of the ATLAS hadron calorimeter in a beam test at the CERN SPS. The FERMI read-out system, using a compressor and a 40 MHz...

Evaluation of FERMI read-out of the ATLAS tilecal prototype (1998)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amelin, D., Amorim, A., ...

Prototypes of the FERMI system have been used to read out a prototype of the ATLAS hadron calorimeter in a beam test at the CERN SPS. The FERMI read-out system, using a compressor and a 40 MHz...

Evaluation of FERMI read-out of the ATLAS tilecal prototype (1998)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amelin, D., Amorim, A., ...

Prototypes of the FERMI system have been used to read out a prototype of the ATLAS hadron calorimeter in a beam test at the CERN SPS. The FERMI read-out system, using a compressor and a 40 MHz...

Evaluation of FERMI read-out of the ATLAS tilecal prototype (1998)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amelin, D., Amorim, A., ...

Prototypes of the FERMI system have been used to read out a prototype of the ATLAS hadron calorimeter in a beam test at the CERN SPS. The FERMI read-out system, using a compressor and a 40 MHz...

Evaluation of FERMI read-out of the ATLAS tilecal prototype (1998)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amelin, D., Amorim, A., ...

Prototypes of the FERMI system have been used to read out a prototype of the ATLAS hadron calorimeter in a beam test at the CERN SPS. The FERMI read-out system, using a compressor and a 40 MHz...

Response of the ATLAS tile calorimeter prototype to muons (1997)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amorim, A., Anderson, K.J., ...

A study of high energy muons traversing the ATLAS hadron Tile calorimeter in the barrel region in the energy range between 10 and 300~GeV is presented. Both test beam experimental data and Monte...

A measurement of the energy loss spectrum of 150 GeV muons in iron (1997)

Berger, E., Blair, R., Dawson, J., Fuess, T., Guarino, V., Hill, N., ...

The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability ${\rm {d}}P/{\rm {d}}v$ per...

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter (1997)

Ajaltouni, Z., Tisserand, V., Jezequel, S., Albiol, F., Alifanov, A., Amaral, P., ...

The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the...

Response of the ATLAS tile calorimeter prototype to muons (1997)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amorim, A., Anderson, K.J., ...

A study of high energy muons traversing the ATLAS hadron Tile calorimeter in the barrel region in the energy range between 10 and 300~GeV is presented. Both test beam experimental data and Monte...

A measurement of the energy loss spectrum of 150 GeV muons in iron (1997)

Berger, E., Blair, R., Dawson, J., Fuess, T., Guarino, V., Hill, N., ...

The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability ${\rm {d}}P/{\rm {d}}v$ per...

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter (1997)

Ajaltouni, Z., Tisserand, V., Jezequel, S., Albiol, F., Alifanov, A., Amaral, P., ...

The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the...

Response of the ATLAS tile calorimeter prototype to muons (1997)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amorim, A., Anderson, K.J., ...

A study of high energy muons traversing the ATLAS hadron Tile calorimeter in the barrel region in the energy range between 10 and 300~GeV is presented. Both test beam experimental data and Monte...

A measurement of the energy loss spectrum of 150 GeV muons in iron (1997)

Berger, E., Blair, R., Dawson, J., Fuess, T., Guarino, V., Hill, N., ...

The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability ${\rm {d}}P/{\rm {d}}v$ per...

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter (1997)

Ajaltouni, Z., Tisserand, V., Jezequel, S., Albiol, F., Alifanov, A., Amaral, P., ...

The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the...

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter (1997)

Ajaltouni, Z., Tisserand, V., Jezequel, S., Albiol, F., Alifanov, A., Amaral, P., ...

The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the...

Response of the ATLAS tile calorimeter prototype to muons (1997)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amorim, A., Anderson, K.J., ...

A study of high energy muons traversing the ATLAS hadron Tile calorimeter in the barrel region in the energy range between 10 and 300~GeV is presented. Both test beam experimental data and Monte...

A measurement of the energy loss spectrum of 150 GeV muons in iron (1997)

Berger, E., Blair, R., Dawson, J., Fuess, T., Guarino, V., Hill, N., ...

The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability ${\rm {d}}P/{\rm {d}}v$ per...

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter (1997)

Ajaltouni, Z., Tisserand, V., Jezequel, S., Albiol, F., Alifanov, A., Amaral, P., ...

The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the...

Response of the ATLAS tile calorimeter prototype to muons (1997)

Ajaltouni, Z., Albiol, F., Alifanov, A., Amaral, P., Amorim, A., Anderson, K.J., ...

A study of high energy muons traversing the ATLAS hadron Tile calorimeter in the barrel region in the energy range between 10 and 300~GeV is presented. Both test beam experimental data and Monte...

A measurement of the energy loss spectrum of 150 GeV muons in iron (1997)

Berger, E., Blair, R., Dawson, J., Fuess, T., Guarino, V., Hill, N., ...

The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS. The differential probability ${\rm {d}}P/{\rm {d}}v$ per...

Response of the ATLAS tile calorimeter prototype to muons (1996)

Ajaltouni, Ziad J, Albiol, F, Alifanov, A, Amaral, P, Amorim, A, Anderson, K J, ...

A study of high energy muons traversing the ATLAS hadron Tile calorimeter in the barrel region in the energy range between 10 and 300~GeV is presented. Both test beam experimental data and Monte...

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter (1996)

Ajaltouni, Ziad J, Albiol, F, Alifanov, A, Amaral, P, Ambrosini, G, Amorim, A, ...

The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the...

A measurement of the energy loss spectrum of 150 GeV muons in iron (1996)

Berger, E, Blair, R, Dawson, J, Fuess, T A, Guarino, V, Hill, N, ...

The energy loss spectrum of 150 GeV muons has been measured with a prototype of the ATLAS hadron calorimeter in the H8 beam of the CERN SPS.\\ The differential probability $dP/dv$ per radiation...

A Step Towards A Computing Grid For The LHC Experiments: ATLAS Data Challenge 1

Sturrock,R., Bischof,R., Epp,B., Ghete,V. M., Kuhn,D., Mello,A. G., ...

The ATLAS Collaboration at CERN is preparing for the data taking and analysis at the LHC that will start in 2007. Therefore, a series of Data Challenges was started in 2002 whose goals are the...

Evidence for structured variation in self-renewal capacity within long-term bone marrow cultures.

Mauch, P, Greenberger, J S, Botnick, L, Hannon, E, Hellman, S

Bone marrow pluripotent stem cells (CFUs) demonstrate capacity for both proliferation and differentiation. The proliferative capacity of CFUs has been measured by serial transplantability and by the...

Proliferative capacity of murine hematopoietic stem cells.

Hellman, S, Botnick, L E, Hannon, E C, Vigneulle, R M

The present study demonstrates a decrease in self-renewal capacity with serial transfer of murine hematopoietic stem cells. Production of differentiated cell progeny is maintained longer than stem...

The use of pathologic features in selecting the extent of surgical resection necessary for breast cancer patients treated by primary radiation therapy.

Harris, J R, Connolly, J L, Schnitt, S J, Cady, B, Love, S, Osteen, R T, ...

The extent of the surgical resection necessary for breast cancer patients treated by primary radiation therapy is unknown. A simple gross excision of the tumor provides the best cosmetic result, but...

Prevalence of respiratory conditions among schoolchildren exposed to different levels of air pollutants in the Haifa Bay area, Israel.

Goren, A I, Hellman, S, Brenner, S, Egoz, N, Rishpon, S

During spring 1984, 2334 second and 2000 fifth-grade schoolchildren living in three Haifa Bay areas on the eastern Mediterranean coast with different levels of air pollution were studied. The parents...

Passive smoking among schoolchildren in Israel.

Goren, A I, Hellman, S

A health survey was carried out among 8259 second- and fifth-grade schoolchildren living in three towns along the Israeli coast. The schoolchildren performed the following pulmonary function tests:...

Evidence for structured variation in self-renewal capacity within long-term bone marrow cultures.

Mauch, P, Greenberger, J S, Botnick, L, Hannon, E, Hellman, S

Bone marrow pluripotent stem cells (CFUs) demonstrate capacity for both proliferation and differentiation. The proliferative capacity of CFUs has been measured by serial transplantability and by the...

Proliferative capacity of murine hematopoietic stem cells.

Hellman, S, Botnick, L E, Hannon, E C, Vigneulle, R M

The present study demonstrates a decrease in self-renewal capacity with serial transfer of murine hematopoietic stem cells. Production of differentiated cell progeny is maintained longer than stem...

The use of pathologic features in selecting the extent of surgical resection necessary for breast cancer patients treated by primary radiation therapy.

Harris, J R, Connolly, J L, Schnitt, S J, Cady, B, Love, S, Osteen, R T, ...

The extent of the surgical resection necessary for breast cancer patients treated by primary radiation therapy is unknown. A simple gross excision of the tumor provides the best cosmetic result, but...

Prevalence of respiratory conditions among schoolchildren exposed to different levels of air pollutants in the Haifa Bay area, Israel.

Goren, A I, Hellman, S, Brenner, S, Egoz, N, Rishpon, S

During spring 1984, 2334 second and 2000 fifth-grade schoolchildren living in three Haifa Bay areas on the eastern Mediterranean coast with different levels of air pollution were studied. The parents...

Passive smoking among schoolchildren in Israel.

Goren, A I, Hellman, S

A health survey was carried out among 8259 second- and fifth-grade schoolchildren living in three towns along the Israeli coast. The schoolchildren performed the following pulmonary function tests:...

A Step Towards A Computing Grid For The LHC Experiments: ATLAS Data Challenge 1

Sturrock, R., Bischof, R., Epp, B., Ghete, V. M., Kuhn, D., Mello, A. G., ...

The ATLAS Collaboration at CERN is preparing for the data taking and analysis at the LHC that will start in 2007. Therefore, a series of Data Challenges was started in 2002 whose goals are the...

Cellular X-ray repair parameters of early passage squamous cell carcinoma lines derived from patients with known responses to radiotherapy.

Weichselbaum, R., Dahlberg, W., Little, J. B., Ervin, T. J., Miller, D., Hellman, S., ...

We have investigated X-ray survival parameters and repair of potentially lethal damage ( PLDR ) in ten early passage squamous cell carcinoma cell lines derived from patients who were biopsied before...

Advanced lymphosarcoma treated by total body irradiation.

Chaffey, J. T., Rosenthal, D. S., Pinkus, F., Hellman, S.

Twenty-five cases of clinical Stage III and Stage IV lymphosarcoma primarily treated by total body irradiation (TBI) are reported. Fifteen cases demonstrated nodular histology and 10 demonstrated...