7,897 research outputs found
A 3-D Track-Finding Processor for the CMS Level-1 Muon Trigger
We report on the design and test results of a prototype processor for the CMS
Level-1 trigger that performs 3-D track reconstruction and measurement from
data recorded by the cathode strip chambers of the endcap muon system. The
tracking algorithms are written in C++ using a class library we developed that
facilitates automatic conversion to Verilog. The code is synthesized into
firmware for field-programmable gate-arrays from the Xilinx Virtex-II series. A
second-generation prototype has been developed and is currently under test. It
performs regional track-finding in a 60 degree azimuthal sector and accepts 3
GB/s of input data synchronously with the 40 MHz beam crossing frequency. The
latency of the track-finding algorithms is expected to be 250 ns, including
geometrical alignment correction of incoming track segments and a final
momentum assignment based on the muon trajectory in the non-uniform magnetic
field in the CMS endcaps.Comment: 7 pages, 5 figures, proceedings for the conference on Computing in
High Energy and Nuclear Physics, March 24-28 2003, La Jolla, Californi
AdS_4 x CP^3 superstring and D=3 N=6 superconformal symmetry
Motivated by the isomorphism between osp(4|6) superalgebra and D=3 N=6
superconformal algebra we consider the superstring action on the AdS_4 x CP^3
background parametrized by D=3 N=6 super-Poincare and CP^3 coordinates
supplemented by the coordinates corresponoding to dilatation and superconformal
generators. It is also discussed the relation between the degeneracy of
fermionic equations of motion and the action kappa-invariance in the framework
of the supercoset approach.Comment: revtex, 12 pages. Version accepted to Phys. Rev. D; v4 corrected
misprints in Eqs.(65), (71); v5 corrected discussion of Z_4 grading on page
ΠΠ°Π΄Π΅ΠΆΠ½ΠΎΡΡΡ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ ΡΡΠ΅Π΅ΠΊ ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ Π°ΠΏΠΏΠ°ΡΠ°ΡΡΡΡ ΠΏΡΠΈ Π²Π½Π΅ΡΠ½ΠΈΡ ΠΌΠ΅Ρ Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡΡ
Π ΠΎΠ·Π³Π»ΡΠ΄Π°ΡΡΡΡΡ Π²ΠΏΠ»ΠΈΠ² Π½Π°ΠΏΡΡΠΆΠ΅Π½Ρ Ρ Π²ΠΈΠ²ΠΎΠ΄Π°Ρ
ΠΌΡΠΊΡΠΎΡΡ
Π΅ΠΌ, ΠΌΡΠΊΡΠΎ-Π·Π±ΡΡΠΎΠΊ, ΡΠ° Ρ ΡΡ
ΠΏΠ°ΡΠ½ΠΈΡ
Π·βΡΠ΄Π½Π°Π½Π½ΡΡ
, ΡΠΎ Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠΌ Π΄ΡΡ Π·ΠΎΠ²Π½ΡΡΠ½ΡΡ
ΠΌΠ΅Ρ
Π°Π½ΡΡΠ½ΠΈΡ
Π²ΠΏΠ»ΠΈΠ²ΡΠ² β Π²ΡΠ±ΡΠ°ΡΡΠΉ ΡΠ° ΡΠ΄Π°ΡΡΠ² β Π½Π° ΠΏΠΎΠΊΠ°Π·Π½ΠΈΠΊΠΈ Π½Π°Π΄ΡΠΉΠ½ΠΎΡΡΡ ΡΠ°ΡΡΠ½ΠΊΠΈ Π°Π΄ΡΠΎΠ΅Π»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ Π°ΠΏΠ°ΡΠ°ΡΡ.he influence of pressure in conclusions of microcircuits, microassembly, and in them solder connections, as result of action of external mechanical loadings β vibrations and impacts β on parameters of reliability of a cell of the radioelectronic device is considered.Π Π°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°Π΅ΡΡΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π°ΠΏΡΡΠΆΠ΅Π½ΠΈΠΉ Π² Π²ΡΠ²ΠΎΠ΄Π°Ρ
ΠΌΠΈΠΊΡΠΎΡΡ
Π΅ΠΌ, ΠΌΠΈΠΊΡΠΎΡΠ±ΠΎΡΠΎΠΊ, ΠΈ Π² ΠΈΡ
ΠΏΠ°ΡΠ½ΡΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡΡ
, ΠΊΠ°ΠΊ ΡΠ΅Π·ΡΠ»ΡΡΠ°Ρ Π΄Π΅ΠΉΡΡΠ²ΠΈΡ Π²Π½Π΅ΡΠ½ΠΈΡ
ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
Π½Π°Π³ΡΡΠ·ΠΎΠΊ β Π²ΠΈΠ±ΡΠ°ΡΠΈΠΉ ΠΈ ΡΠ΄Π°ΡΠΎΠ² β Π½Π° ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ Π½Π°Π΄Π΅ΠΆΠ½ΠΎΡΡΠΈ ΡΡΠ΅ΠΉΠΊΠΈ ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ Π°ΠΏΠΏΠ°ΡΠ°ΡΠ°
ΠΠΈΠΏΠ΅ΡΡΠ»ΡΡΠ°ΠΉΠ½ΡΠ΅ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΠ΅ Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΉ ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ ΡΡΠ΅Π΄ΡΡΠ²
Π ΠΎΠ·Π³Π»ΡΠ½ΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΈ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΡΡΠ½ΠΊΡΡΠΎΠ½Π°Π»ΡΠ½ΠΈΡ
ΠΏΠΎΠΊΠ°Π·Π½ΠΈΠΊΡΠ² Π ΠΠ ΠΏΡΠ΄ ΡΠ°Ρ ΠΏΡΠΎΠ΅ΠΊΡΡΠ²Π°Π½Π½Ρ Π½Π° ΠΎΡΠ½ΠΎΠ²Ρ ΡΠ΅ΠΎΡΡΡ Π³ΡΠΏΠ΅ΡΠ²ΠΈΠΏΠ°Π΄ΠΊΠΎΠ²ΠΈΡ
ΡΠ²ΠΈΡThe methods of definition of the designs radioelectronic apparatus parameters during designing on the basis of the hyperbolic-accidental phenomena are consideredΠ Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΉ Π ΠΠ‘ ΠΏΡΠΈ ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠ΅ΠΎΡΠΈΠΈ Π³ΠΈΠΏΠ΅ΡΡΠ»ΡΡΠ°ΠΉΠ½ΡΡ
ΡΠ²Π»Π΅Π½ΠΈ
Heavy quark potential in lattice QCD at finite temperature
Results of the study of lattice QCD with two flavors of nonperturbatively
improved Wilson fermions at finite temperature are presented. The transition
temperature for m_{\pi}/m_{\rho} \sim 0.8 and lattice spacing a \sim 0.12 fm is
determined. A two-exponent ansatz is successfully applied to describe the heavy
quark potential in the confinement phase.Comment: 3 pages, 1 figure, talk given at the 5th International Conference on
Quark Confinement and the Hadron Spectrum, Gargnano, Italy, 10-14 Sep 200
ΠΡΠΈΠ½ΡΠΈΠΏΡ ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΡΠΉ ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΡΡ Π°ΠΏΠΏΠ°ΡΠ°ΡΠΎΠ² Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΠΌΠΈ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΡΠΌΠΈ ΠΊΠ°ΡΠ΅ΡΡΠ²Π°
Π ΠΎΠ·Π³Π»ΡΠ½ΡΡΡ ΠΏΡΠΎΠ±Π»Π΅ΠΌΠΈ, ΡΠΎ Π²ΠΈΠ½ΠΈΠΊΠ°ΡΡΡ ΠΏΡΠ΄ ΡΠ°Ρ ΠΏΡΠΎΠ΅ΠΊΡΡΠ²Π°Π½Π½Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΠΈΡ
ΠΊΠΎΠ½ΡΡΡΡΠΊΡΡΠΉ ΡΠ°Π΄ΡΠΎΠ΅Π»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΡ Π°ΠΏΠ°ΡΠ°ΡΡΡΠΈ, Π° ΡΠ°ΠΊΠΎΠΆ ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΡΡΠ²ΠΎΡΠ΅Π½Π½Ρ ΡΡΠ»ΡΠΎΠ²ΠΎΡ ΡΡΠ½ΠΊΡΡΡ ΠΏΡΠΈΡΡΡΠΎΡ, ΡΠΎ Π·Π°Π±Π΅Π·ΠΏΠ΅ΡΠ°ΡΡ Π½Π°ΠΉΠ²ΠΈΡΡ ΠΏΠΎΠΊΠ°Π·Π½ΠΈΠΊΠΈ ΡΠΊΠΎΡΡΡ ΠΎΠ±βΡΠΊΡΡ ΠΏΡΠΎΠ΅ΠΊΡΡΠ²Π°Π½Π½Ρ.The problems arising at designing of optimum designs of radioelectronic modules the equipment, and also methods of creation of criterion function of the device ensuring best parameters of quality of object of designing are considered.Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Ρ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ, Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡΠΈΠ΅ ΠΏΡΠΈ ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΉ ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ Π°ΠΏΠΏΠ°ΡΠ°ΡΡΡΡ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΌΠ΅ΡΠΎΠ΄Ρ ΡΠΎΠ·Π΄Π°Π½ΠΈΡ ΡΠ΅Π»Π΅Π²ΠΎΠΉ ΡΡΠ½ΠΊΡΠΈΠΈ ΡΡΡΡΠΎΠΉΡΡΠ²Π°, ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡΠΈΠ΅ Π½Π°ΠΈΠ²ΡΡΡΠΈΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΊΠ°ΡΠ΅ΡΡΠ²Π° ΠΎΠ±ΡΠ΅ΠΊΡΠ° ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ
ΠΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΡ ΡΠ°Π·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ ΡΠ΅ΠΏΠ»ΠΎΠ²ΡΠ΄Π΅Π»ΡΡΡΠΈΡ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ ΡΠ·Π»ΠΎΠ² ΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² Π½Π° ΠΏΠ΅ΡΠ°ΡΠ½ΠΎΠΉ ΠΏΠ»Π°ΡΠ΅
Π ΠΎΠ·Π³Π»ΡΠ΄Π°ΡΡΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΡΠ° ΠΏΡΠΎΠ³ΡΠ°ΠΌΠ° Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΎΠ²Π°Π½ΠΎΠ³ΠΎ ΡΠΎΠ·ΠΌΡΡΠ΅Π½Π½Ρ ΡΠ΅ΠΏΠ»ΠΎΠ²ΠΈΠ΄ΡΠ»ΡΡΡΠΈΡ
ΡΡΠ½ΠΊΡΡΠΎΠ½Π°Π»ΡΠ½ΠΈΡ
Π²ΡΠ·Π»ΡΠ² ΡΠ° Π΅Π»Π΅ΠΊΡΡΠΎΡΠ°Π΄ΡΠΎΠ΅Π»Π΅ΠΌΠ΅Π½ΡΡΠ² Π½Π° Π΄ΡΡΠΊΠΎΠ²Π°Π½ΡΠΉ ΠΏΠ»Π°ΡΡ ΡΠ°Π΄ΡΠΎΠ΅Π»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ Π°ΠΏΠ°ΡΠ°ΡΡ, ΡΠΊΡ Π·Π°Π±Π΅Π·ΠΏΠ΅ΡΡΡΡΡ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΡΡΡ ΡΠ΅ΠΏΠ»ΠΎΠ²ΠΎΠ³ΠΎ ΡΠ΅ΠΆΠΈΠΌΡThe methods and program of the automated
accommodation of functional units and radioelements allocating is warmly on the printedcircuit-board of the radioelectronic device ensuring an optimality of a thermal mode are consideredΠ Π°ΡΡΠΌΠ°ΡΡΠΈΠ²Π°ΡΡΡΡ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΈ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ° Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΡΠ°Π·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ ΡΠ΅ΠΏΠ»ΠΎΠ²ΡΠ΄Π΅Π»ΡΡΡΠΈΡ
ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΡΠ·Π»ΠΎΠ² ΠΈ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² Π½Π° ΠΏΠ΅ΡΠ°ΡΠ½ΠΎΠΉ ΠΏΠ»Π°ΡΠ΅ ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ Π°ΠΏΠΏΠ°ΡΠ°ΡΠ°, ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡΠΈΠ΅ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΡΡΡ ΡΠ΅ΠΏΠ»ΠΎΠ²ΠΎΠ³ΠΎ ΡΠ΅ΠΆΠΈΠΌ
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