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S. Zimmermann,
J. Anderson,
J. Andresen,
E. Barsotti,
J. Chramowicz,
G. Duerling,
M. Gao, H. Gonzalez,
B. Haynes,
W. Knopf, [......],
S. Harder,
H. Hill,
J. Huth,
J. O'Kane,
J. Oliver,
H. Robins,
M. Spiropulu,
R. Strohmer,
M. Gold,
T. Thomas
[show abstract]
[hide abstract]
ABSTRACT: A test stand for the next generation of the Silicon Vertex
Detector (SVX-II) of the Collider Detector Facility (CDF) at Fermilab
has been developed. It is capable of performing cosmic ray, beam, and
laser pulsing tests on silicon strip detectors using the new generation
of SVX chips. The test stand is composed of a SGI workstation, a VME
CPU, the Silicon Test Acquisition and Readout (STAR) board, the Test
Fiber Interface Board (TFIB), and the Test Port Card (TPC). The STAR
mediates between external stimuli for the different tests and produces
appropriate high level commands which are sent to the TFIB. The TFIB, in
conjunction with the TPC, translates these commands into the correct
logic levels to control the SVX chips. The four modes of operation of
the SVX chips are configuration, data acquisition, digitization, and
data readout. The data read out from the SVX chips is transferred to the
STAR. The STAR can then be accessed by the VME CPU and the SGI
workstation for future analyses. The detailed description of this test
stand will be given
IEEE Transactions on Nuclear Science 07/1996; · 1.45 Impact Factor
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H. Gonzalez,
E. Barsotti,
M. Bowden,
D. Christian,
J. Chramowicz,
M. Fachin,
M. Haldeman,
J. Hoff,
S. Holmes,
C. Rotolo, [......],
R. Trendler,
J. Urish,
R. Yarema,
T. Zimmerman,
S. Zimmermann,
W. Kowald,
A. MacManus,
M. Recagni,
J. Segal,
P. Spentzouris
[show abstract]
[hide abstract]
ABSTRACT: A system to collect and process data at high rate, 53 MHz, from a silicon microstrip detector has been developed. The system is implemented using the FASTBUS standard and modularized at the board level in 128 channel increments. The system includes the following features: zero dead time readout for average trigger rate as high as 1 MHz; pipelined triggers and event readout; programmable data delay of up to 4.8 mu s; FASTBUS system readout; histogram readout option; and multiple high-speed bipolar process ASICs (application-specific integrated circuits). A general block diagram of data flow for the SSD (silicon strip detector) readout is provided. All the modules used for the SSD readout were tested individually to satisfy single board test requirements. Attention is given to SSD hardware for E771, a fixed target experiment designed to study the production of B hadrons by an 800 GeV/c proton beam.< >
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE; 12/1991
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C. Swoboda,
E. Barsotti,
M. Bowden,
D. Christian,
R. DeMaat,
M. Fachin, H. Gonzalez,
R. Hance,
M. Haldeman,
J. Hoff,
M. Larwill,
C. Rotolo,
R. Trendler,
K. Trepstow,
J. Urish,
D. Walsh,
R. Yarema,
T. Zimmerman
[show abstract]
[hide abstract]
ABSTRACT: A synchronous silicon strip readout system capable of zero
dead-time readout at average trigger rates in excess of 1 MHz is
described. The system is implemented in Fastbus, uses pipelining
techniques, and includes point-to-point fiberoptic data links to
transmit detector digital data. Semicustom ASIC (application-specific
integrated circuit) chips are used to amplify, discriminate, and
logically combine track data before encoding. The overall system, each
major Fastbus module, and the functional aspects of the ASIC chips are
described
IEEE Transactions on Nuclear Science 05/1990; · 1.45 Impact Factor
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[show abstract]
[hide abstract]
ABSTRACT: The authors describe a data acquisition architecture based on a
simple, high-bandwidth event builder and serial data transmission.
Extensive parallelism allows collection and building of event data at
combined rates of several gigabytes per second. No high-speed data flows
through bus backplanes, and the standard connection for both front-end
modules is a fast unidirectional serial link. By limiting the data
reduction factors expected from any single trigger processor to that
which can be achieved using simple hardware, no support for complex
message-passing protocols is necessary. Dividing the processing load
into a large number of independent paths, each of which contains the
information from an entire event, allows the use of commercial
processors
IEEE Transactions on Nuclear Science 03/1989; · 1.45 Impact Factor
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T.M. Shaw,
A.W. Booth,
M. Bowden, H. Gonzalez,
P.K. Sinervo,
K.J. Ragan,
M.S. Baker,
C.C. Dong,
R.K. Kwarciany,
R. Van Conant,
M.J. Whitman
[show abstract]
[hide abstract]
ABSTRACT: A hardware event builder (EVB) has been developed for use at the
collider detector experiment at Fermi National Accelerator (CDF). The
event builder presently consists of five FASTBUS modules and has the
task of reading out the front-end scanners, reformatting the data into
YBOS band structure, and transmitting the data to a level-3 (L3) trigger
system which is composed of multiple VME processing nodes. The event
builder receives its instructions from a VAX-based buffer manager
program via a Unibus processor interface. The buffer manager instructs
the event builder to read out one of the four CDF front end buffers. The
event builder informs the buffer manager when the event has been
formatted and is then instructed to push it up to the L3 trigger system.
Once the event is in the L3 system, a decision is made as to whether to
write the event to tape. The authors describe the EVB modules and
discuss the flexibility of the EVB architecture, the measured system
throughput, and the prototyping of the EVB
IEEE Transactions on Nuclear Science 03/1989; · 1.45 Impact Factor
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A. W. Booth,
M. Bowden, H. Gonzalez,
T. M. Shaw,
P. K. Sinervo,
M Baker,
R. Kwarciany,
E. Serich,
R. Van Conant,
K. Ragan,
I. Sidharta
IEEE Transactions on Nuclear Science 09/1987; 34(4):790-795. · 1.45 Impact Factor
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E. Barsotti,
S. Belforte,
M. Dell'Orso,
S. Galeotti,
P. Giannetti, H. Gonzalez,
D. Hanssen,
C. Horvath,
K. Konigsfeld,
D. Passuello,
L. Ristori,
R. Vidal
[show abstract]
[hide abstract]
ABSTRACT: The Trigger Supervisor coordinates the triggering and digitization subprocess of the CDF data acquisition system: it provides a gating signal to the front-end electronics, directs the gated data to be digitized and stored into selected buffers, communicates the identity of filled buffers to the Buffer Manager, and recycles buffers after they have been read out: it is implemented as a FASTBUS Master and contains three cooperating sequencers, two of which are microcode based.
IEEE Transactions on Nuclear Science 09/1985; · 1.45 Impact Factor
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[show abstract]
[hide abstract]
ABSTRACT: The Hewlett Packard HDMP-1000 G-Link transmitter and receiver chip set was tested for an event builder application. The relock time of the serial link when a data path is changed is less than 30 μs provided fill frames are transmitted. With a 1 kHz data path switching rate, this results in less than a 3% data rate inefficiency due to re-synchronization which makes the HP G-Link chip set effective for use in a large event builder for a hadron collider experiment
Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record;
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E. Barsotti,
A.W. Booth,
M. Bowden,
J.T. Carroll,
C. Day,
J.E. Elias,
I. Gaines,
L. Giebel,
G. Goeransson, H. Gonzalez, [......],
B. Hubbard,
F. Kirsten,
J. Siegrist,
M. Dell'Orso,
P. Giannetti,
L. Ristori,
T. Devlin,
B. Flaugher,
U. Joshi,
M. Werner
[show abstract]
[hide abstract]
ABSTRACT: All CDF event data are collected in a multilevel FASTBUS network. At the lowest level of this network, MEP/MX and SSP scanners read and buffer data from RABBIT and FASTBUS front end systems. Operation of these front end scanners is coordinated by the Trigger Supervisor module which initiates parallel readout after receiving Level 1 and Level 2 triggers. Dataflow from scanners to consumer processes on host VAX computers is supervised by the Buffer Manager which directs an Event Builder to collect and format data from a set of scanner modules. This system is designed to allow partitioning into semi-independent sections for parallel development and calibration studies.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
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D Acosta,
T. Affolder,
M H Ahn,
T Akimoto,
M. G. Albrow,
B. Alcorn,
C. Alexander,
D Allen,
D. Allspach,
P Amaral, [......],
J. C. Yun,
M. Zalokar,
L Zanello,
A Zanetti,
I Zaw,
F Zetti,
J Zhou,
T Zimmerman,
A Zsenei,
S Zucchelli
[show abstract]
[hide abstract]
ABSTRACT: We present a measurement of the mass difference m(D-s(+))-m(D+), where both the D-s(+) and D+ are reconstructed in the phipi(+) decay channel. This measurement uses 11.6 pb(-1) of data collected by CDF II using the new displaced-track trigger. The mass difference is found to be m(D-s(+))-m(D+)=99.41+/-0.38(stat)+/-0.21(syst) MeV/c(2).
Physics Research Publications.
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CDF Collaboration,
D Acosta,
T. Affolder,
MH Ahn,
T Akimoto,
MG Albrow,
B. Alcorn,
C. Alexander,
D Allen,
D. Allspach, [......],
JC Yun,
M. Zalokar,
L Zanello,
A Zanetti,
I Zaw,
F Zetti,
J Zhou,
T Zimmerman,
A Zsenei,
S Zucchelli
-
D Acosta,
T. Affolder,
M H Ahn,
T Akimoto,
M. G. Albrow,
B. Alcorn,
C. Alexander,
D Allen,
D. Allspach,
P Amaral, [......],
K Goulianos,
J. Grado,
M Gregori,
A Gresele,
T. Griffin,
G. Grim,
C Grimm,
S. Gromoll,
C Grosso-Pilcher,
C Gu
[show abstract]
[hide abstract]
ABSTRACT: We present a measurement of the mass difference m(D-s(+))- m(D+), where both the D-s(+) and D+ are reconstructed in the phipi(+) decay channel. This measurement uses 11.6 pb(-1) of data collected by CDF II using the new displaced-track trigger. The mass difference is found to be m(D-s(+))-m(D+)=99.41+/- 0.38(stat)+/-0.21(syst) MeV/c(2).
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J. Antos,
H-Y. Chao,
M-T. Cheng,
M-L. Chu,
R-S. Guo,
C-L. Ho,
P-K. Teng,
M-J. Wang,
S-C. Wu,
G-P. Yeh, [......],
H.-J. Trost,
J. Wolinski,
D. Benjamin,
A. Sill,
J-F. Hou,
R. Ely,
C. Haber,
I. Kipnis,
S. Kleinfelder,
O. Milgrome
[show abstract]
[hide abstract]
ABSTRACT: The SVX vertex detector has been very successful in heavy flavor physics at CDF, playing a significant role in both top and bottom analyses. SVX′, a radiation hard version of SVX, is presently taking data. In 1998 the Main Injector upgrade to the accelerator complex at Fermilab will provide a significant increase in luminosity, and will require a new vertex detector, SVX II. The specifications and design considerations for this detector are discussed.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
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P. Azzi,
N. Bacchetta,
B.A. Barnett,
M. Bailey,
F. Bedeschi,
D. Bisello,
J.D. Cammerata,
W.C. Carithers,
H.Y. Chao,
C.N. Chiou, [......],
K. Turner,
C.H. Wang,
M.J. Wang,
G. Watts,
H. Wenzel,
S.C. Wu,
W. Yao,
R. Yarema,
J.C. Yun,
F. Zetti
[show abstract]
[hide abstract]
ABSTRACT: The Collider Detector at Fermilab (CDF) radiation hardened silicon vertex detector (SVX') is described. The new detector has several improvements over its predecessor such as better signal to noise and higher efficiency. It is expected to have a radiation tolerance in excess of 1 Mrad. It has been taking data for several months and some preliminary results are shown.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
