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S Berglund,
C Bohm, M Engström,
D Eriksson,
S-O Holmgren,
K Jon-And,
J Lesser,
B Selldén,
M Ramstedt,
S Silverstein,
J Sjölin
[show abstract]
[hide abstract]
ABSTRACT: The ATLAS Tile Calorimeter digitizer system samples photomultiplier signals from the scintillating tiles of the hadronic calorimeter. For each channel a pair of 10-bit ADCs digitize high and low gain signals at 40.08 MHz to provide the necessary 16-bit dynamic range. The sampled data is temporarily stored in digital pipelines for up to 6.375 ms, awaiting a level-1 accept. For each accept received, the corresponding sampled pulse is transferred to a derandomizer buffer for subsequent readout to the data acquisition system (DAQ).
Journal of Instrumentation 01/2008; 3(01):P01004. · 1.87 Impact Factor
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P. Amaral,
A. Amorim,
K. Anderson,
G. Barreira,
R. Benetta,
S. Berglund,
C. Biscarat,
G. Blanchot,
E. Blucher,
A. Bogush, [......],
S. Vorozhtsov,
D. Wagner,
A. White,
H. Wolters,
N. Yamdagni,
G. Yarygin,
C. Yosef,
A. Zaitsev,
M. Zdrazil,
J. Zuñiga
[show abstract]
[hide abstract]
ABSTRACT: 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 longitudinal configuration of scintillator tiles. Using a fine-grained pion beam scan at 100 GeV, a detailed picture of transverse shower behaviour is obtained. The underlying radial energy densities for the four depth segments and for the entire calorimeter have been reconstructed. A three-dimensional hadronic shower parametrisation has been developed. The results presented here are useful for understanding the performance of iron-scintillator calorimeters, for developing fast simulations of hadronic showers, for many calorimetry problems requiring the integration of a shower energy deposition in a volume and for future calorimeters design.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
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V J O Perera,
I P Brawn,
J Edwards,
C N P Gee,
A R Gillman,
R Hatley,
A Shah,
T P Shah,
P G Bright-Thomas,
J Garvey, [......],
B Bauss,
K Georgi,
K Jakobs,
G Quast,
U Schäfer,
J Thomas,
C. Bohm, M Engström,
S Hellman,
S Silverstein
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A Dell'Acqua,
C. Alippi,
G Appelquist,
R Benetta,
S R Berglund,
J Bezemat,
F Blouzon,
C. Bohm,
L. Breveglieri,
S. Brigati, [......],
Aurore Savoy-Navarro,
P Schwemling,
R. Stefanelli,
R. Sundblad,
C. Svensson,
G. Torelli,
J P Vanuxem,
N Yamdagni,
J Yuan,
A Ödmark
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P Amaral,
A Amorim,
K Anderson,
G Barreira,
R Benetta,
S. Berglund,
C Biscarat,
G. Blanchot,
E Blucher,
A A Bogush, [......],
S B Vorozhtsov,
D Wagner,
A White,
H. Wolters,
N Yamdagni,
G Yarygin,
C Yosef,
A Zaitsev,
M Zdrazil,
J Zúñiga
[show abstract]
[hide abstract]
ABSTRACT: 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 longitudinal configuration of scintillator tiles. Using a fine-grained pion beam scan at 100 GeV, a detailed picture of transverse shower behavior is obtained. The underlying radial energy densities for four depth segments and for the entire calorimeter have been reconstructed. A three-dimensional hadronic shower parametrization has been developed. The results presented here are useful for understanding the performance of iron-scintillator calorimeters, for developing fast simulations of hadronic showers, for many calorimetry problems requiring the integration of a shower energy deposition in a volume and for future calorimeter design.
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S Agnvall,
Ziad J Ajaltouni,
F Albiol,
A. Alifanov,
P Amaral,
D V Amelin,
A Amorim,
K J Anderson,
C Angelini,
A. Antola, [......],
S B Vorozhtsov,
D Wagner,
A White,
H. Wolters,
N Yamdagni,
G Yarygin,
C Yosef,
J Yuan,
A Zaitsev,
M Zdrazil
[show abstract]
[hide abstract]
ABSTRACT: 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 sampling ADC, is compared to a standard charge integrating read-out by measuring the energy resolution of the calorimeter separately with the two systems on the same events. Signal processing techniques have been designed to optimize the treatment of \fermi{} data. The resulting energy resolution is better than the one obtained with the standard read-out.
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C. Alippi,
G. Appelquist,
S. Berglund,
C. Bohm,
L. Breveglieri,
S. Brigati,
P. Carlson,
P. Cattaneo,
L. Dadda,
J. David, [......],
M. Sami,
A. Savoy-Navarro,
R. Stefanelli,
R. Sundblad,
C. Svensson,
G. Torelli,
J.P. Vanuxem,
N. Yamdagni,
J. Yuan,
R. Zitoun
[show abstract]
[hide abstract]
ABSTRACT: A digital solution to the front-end electronics for calorimetric detectors at future supercolliders is presented. The solution is based on high speed converters, a fully programmable pipeline/digital filter chain and local intelligence. Questions of error correction, fault-tolerance and system redundancy are also being considered. A system integration of a multichannel device in a multichip, Silicon-on-Silicon Microsystem hybrid, is used. This solution allows a new level of integration of complex analogue and digital functions, with an excellent flexibility in mixing technologies for the different functional blocks. It also allows a high degree of programmability at both the function and the system level, and offers the possibility of customising the microsystem with detector-specific functions.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
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Z. Ajaltouni,
F. Albiol,
A. Alifanov,
P. Amaral,
D. Amelin,
A. Amorim,
K. Anderson,
C. Angelini,
S. Agnvall,
A. Antola, [......],
S. Vorozhtsov,
D. Wagner,
A. White,
H. Wolters,
N. Yamdagni,
G. Yarygin,
C. Yosef,
J. Yuan,
A. Zaitsev,
M. Zdrazil
[show abstract]
[hide abstract]
ABSTRACT: 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, is compared to a standard charge integrating read-out by measuring the energy resolution of the calorimeter separately with the two systems on the same events.Signal processing techniques have been designed to optimize the treatment of FERMI data. The resulting energy resolution is better than the one obtained with the standard read-out.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
