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1. http://antares.sinp.msu.ru/seminar/Gracheva.pdf
... Separation of all runs on several groups by mean active sectors. ... Ways to carry out step 2: trying to cut off all points which don't reach the fit line with errors. Ways to carry out step 2: mean active sectors selection Ways to carry out step 2: results of mean active sectors selection by example of set 2 Failing of mean active sector selection method on example of set 3: one point is still on the graph Introduction of new distance parameter How to find an optimal distance parameter? ...
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Ссылки http://antares.sinp.msu.ru/seminar/Gracheva.pdf -- 731.4 Кб -- 16.12.2013
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2. http://antares.sinp.msu.ru/seminar/Kulikovskiy.pdf
Analysis of the ANTARES data for SN neutrino detection V. Kulikovskiy (MSU / INFN Genova) Hit counts in the detector. The number of hits ( hit counts ) in a time slice (104.8 ms) is used (this information is stored in each run) Mean number of hit counts in one PMT is ~5500 (corresponds to ~55 kHz) Expected number of hits from SN in 100ms is 11.6 ( 550 0) Bioluminescence bursts should be excluded Bioluminescence cut We have collected distributions of hit counts for each ...
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Ссылки http://antares.sinp.msu.ru/seminar/Kulikovskiy.pdf -- 213.8 Кб -- 16.12.2013
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3. http://antares.sinp.msu.ru/seminar/Yakovenko.pdf
NEMO Mini-Tower Floor Simulation construction Normalized Value X 'V X= N V ґ volume N ґ number of decays X' ґ number of coincidence Simulation results Data packet P ack et s r o w P ack et s r o w Experimental data processing Experimental data processing Coincidence rate PMT_IDs 1-2 3-4 5-6 7-8 9-10 11-12 13-14 15-16 Coincidence ...
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Ссылки http://antares.sinp.msu.ru/seminar/Yakovenko.pdf -- 843.4 Кб -- 16.12.2013
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4. http://antares.sinp.msu.ru/docs/Anisotropy_2011Bamberg.pdf
Anisotropy of Cosmic Rays. Origins, experiments, data analysis problems & methods. ... ANTARES problems and methods. ... 2D? experiments Name Tibet Air Shower Array Position 90.522o E, 30.102o N; 4300 m above sea level 30.11 N, 4300m a.s.l. Gran Sasso, 2000m Caucasus, 1700m (40deg N, 113 deg W), atmospheric depth of 860 gm/cm2 Energy 4,6.2,12,50, 300 TeV Gamma /CR mix Time 1997-1999 TibetII, 1999-2001 TibetIII (bigger HD array). 4 years 1 year Statistics 7x109 in ~1000 days Rate Ang. ...
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Ссылки http://antares.sinp.msu.ru/docs/Anisotropy_2011Bamberg.pdf -- 1353.8 Кб -- 16.12.2013
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5. http://antares.sinp.msu.ru/docs/highQC_2011_Bamberg.pdf
High level DQ control Vladimir Kulikovskiy Data/MC 3N trigger only. ... Colas presentaAon ґ raAo seems to be different for different trigger setups. ... Wiki >Data >Quality Assessment (boYom) Ї It's a SeaTray module (antares qa used as a base) to be added in future to the producAon chain. ... Aafit charge sigma aachargesigma AafitChargePerOM RMS / MEAN * 100% Residual Residual ґ Ame(ns) difference between real hit Ame and expected hit Ame from Aafit reconstructed track. ...
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Ссылки http://antares.sinp.msu.ru/docs/highQC_2011_Bamberg.pdf -- 576.3 Кб -- 16.12.2013
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6. http://antares.sinp.msu.ru/docs/2010_Amsterdam_Kulikovskiy.pdf
Analysis of the ANTARES data for SN neutrino detection V. Kulikovskiy (MSU / INFN Genova) SN detection, V.Kulikovskiy, ANTARES meeting in Amsterdam 22-09-2010 1/14 SN progenitor stars distribution A half of the possible sources of SN type II explosion are at 10kpc. Sensitivity decreases as the square of the distance to SN SN detection, V.Kulikovskiy, ANTARES meeting in Amsterdam 22-09-2010 2/14 Methods overview Single rate 1. exclude OMs affected by bio bursts 2. ...
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Ссылки http://antares.sinp.msu.ru/docs/2010_Amsterdam_Kulikovskiy.pdf -- 270.1 Кб -- 16.12.2013
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7. http://antares.sinp.msu.ru/docs/Gracheva_Bamberg_22.09.11.pdf
... Further processing Only 3N events of ?good? runs of previous analysis are selected: 3N triggered events exist in every run Better accordance with MC for rates 150kHz (see elog 548 by Colas) GC triggered events excluded AaFit: -6.5 (Vladimir's presentation explains reason) Zenith angle 20° (in order to look only at events with vertical tracks) After 2008 2009 2010 all fi year year year ltres: -- 0.83107 -- 0.77107 -- 1.04107 - No evidence of possible anisotropy either. ...
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Ссылки http://antares.sinp.msu.ru/docs/Gracheva_Bamberg_22.09.11.pdf -- 291.6 Кб -- 16.12.2013
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8. http://antares.sinp.msu.ru/docs/Kulikovsky%20-%20NEMO&ANTARES.pdf
... I ( ) II III 40 (~45 ) > 2000 < 0,0008 , ґ 553 ( K40 17 2009 ґ e-log 570) - K40 17 553 ( ) hi ( i) , hi < Ci C ґ H C , ( ) , (Hdet ) , det #1 # 2 #3 .. H det #267 #1 #2 ! t #1 Hdet ... #1 t Hdet (., 11.6) Hdet #1 # 2 #3 # 2 #3 ... ... #553 #553 #1 #2 ... t 2 Hdet ґ Hdet , ґ () (NB ґ ) Hdet Hcut ( ) ( ) (, P=1,7*10-7 ) Hdet Hcut ( ) ґ H Hcut H det Hdet det 1 m1, - ... 2 67 1 m267, 267 H det ґ - Mdet, S det Mdet=mi, mi i , i i NB ґ - 267 105 ( 267 hi < Ci ) - Hdet-Mdet - 0, S det . ...
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Ссылки http://antares.sinp.msu.ru/docs/Kulikovsky%20-%20NEMO&ANTARES.pdf -- 2552.1 Кб -- 16.12.2013
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9. http://antares.sinp.msu.ru/docs/MAM%202011%20-%20Katya.pdf
... Usually runs in the end of a calibration period are acceptable Ї GroupID format is YYGG.S ґ a float, YY ґ year {8,10}, GGgroup {1,99}, S ґ subgroup {1,} (possibly YYGG.S.S) Example of a group Group 1001.1.1 - 3N+ 2T3 (+GC) Fit and distance 2010 III I II Line reconnections I. 14/11/2009 ґ 11/09/2010, 10 lines 3N+ 2T3 , 1001.1, 187316 min (130 days ) 1/2 gain , 1001.2, 14231 min (10 days ) 1/4 gain , 1001.3, 34230 min (24 days ) 1/8 ... For preliminary and problematic runs. ...
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Ссылки http://antares.sinp.msu.ru/docs/MAM%202011%20-%20Katya.pdf -- 399.8 Кб -- 16.12.2013
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10. http://antares.sinp.msu.ru/docs/MAM%202011%20-%20Volodya.pdf
Afterpulses measurements for the ANTARES PMT Vladimir Kulikovskiy INFN Genova / SINP MSU 07/06/2011 Afterpulses measerements, V.Kulikovskiy, INFN Genova / SINP MSU 01/10 Spurious pulses l Afterpulses type 1. l l 1a due to escaped e1b due to escaped l l l 2) afterpulse type 2. ... Afterpulses measerements, V.Kulikovskiy, INFN Genova / SINP MSU 04/10 Pre-pulses & late pulses. ... Prepulse and delayed pulse ґ are the "main" pulses (one pulse only). main pulse afterpulse 1.0%. ...
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Ссылки http://antares.sinp.msu.ru/docs/MAM%202011%20-%20Volodya.pdf -- 685.6 Кб -- 16.12.2013
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11. http://antares.sinp.msu.ru/docs/MAM%202011%20-%20Yaroslav.pdf
Angular acceptance Old source E=2.8 eV, mono Update on OM GEANT4 simulation Ї Thin layer optical model: D. Motta, S. SchЖnert, NIMA 539 (2005) 217 Thin layer Optical Model From Motta et al paper internal note ANTARES-OPMO-2009-003 GEANT4 default Good agreement Thin layer Optical Model implemented in GEANT4 Comparison PMT Scan. Level of gel = 10.85 cm Full reflection PMT Scan. Level of gel = 11.35 cm Angular acceptance ToDo List Error calculation Final acceptance release eta_E calculation K40 rate
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Ссылки http://antares.sinp.msu.ru/docs/MAM%202011%20-%20Yaroslav.pdf -- 540.2 Кб -- 16.12.2013
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12. http://antares.sinp.msu.ru/docs/Shirokov%20-%20The%20first%20results%20of%20MSU%20groups%20in%20ANTARES%20project.pdf
... Number of required sensors is 10000 4 The part of ANTARES collaboration (http://antares.in2p3.fr/Collaboration/index.html) 5 The some direction of MSU group activity in the project Ї Bioluminescence cut Ї Quality cuts Ї SN search 6 Bioluminescence cut We have collected distributions of hit counts for each PMT during one K40 run (~45min) Usually these distributions consist of 2 parts ґ Poissonian (due to K40 and plankton ... Conclusion Bioluminescence cut was done. ...
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Ссылки http://antares.sinp.msu.ru/docs/Shirokov%20-%20The%20first%20results%20of%20MSU%20groups%20in%20ANTARES%20project.pdf -- 643.2 Кб -- 16.12.2013
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13. http://antares.sinp.msu.ru/docs/acceptance_bamberg2011-1.pdf
Update on angular acceptance Bamberg , 19th September 2011 V. Kulikovskiy, Y. Yakovenko and H. Costantini Status at the Moscow Meeting Fixed some bugs in a geometry and mirrors Added a dynode stack in geometry description Implemented thin layer optical model Bamberg , September 2011 1 OM scans in Erlangen 4 scans x 2 OMs 8 scans that can be used as inputs in GEANT4 simulation to obtain collection efficiency ...
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Ссылки http://antares.sinp.msu.ru/docs/acceptance_bamberg2011-1.pdf -- 1152.8 Кб -- 16.12.2013
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14. http://antares.sinp.msu.ru/docs/Ershova%20-%20Acoustic%20field%20eng.pdf
Experimental Study of the Acoustic Field Generated by a 50 MeV Electron Beam in Water V. B. Bychkov1, V. S. Demidov2, E. V. Demidova2, A. N. Ermakov3, O. D. Ershova3, B. S. Ishkhanov3, V. P. Maslyany1, A. Yu. ... At a two-dimensional diagram (distance-time) two signal tracks were observed from two sound sources: a cylindrical acoustic antenna generated by the electron beam, and an area of the beam entrance cap which divides the water medium from the air. ... Fig. ... Arrows mark the beam spill time. ...
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Ссылки http://antares.sinp.msu.ru/docs/Ershova%20-%20Acoustic%20field%20eng.pdf -- 432.1 Кб -- 16.12.2013
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15. http://antares.sinp.msu.ru/docs/Gracheva_TP.pdf
... 2009 , , : 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 17 18 Physics Trigger Noisy channels treated Physics Trigger Noisy channels treated+Galactic Center Trigger Physics 1T2+GC SCAN Physics Trigger with GC Physics Trigger 3N only Physics Trigger with GCTest of new HV/THR SCAN Physics Trigger (GC)HV/THR revision1 SCAN Physics Trigger (3N only)HV/THR revision1 SCAN ... 16 Physics Trigger 3N+2T3+GC+K40 2009 V3.1 3N, 2T3, GC K40, V3.1, 2009 . ... III. , ? ? (distance). ...
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Ссылки http://antares.sinp.msu.ru/docs/Gracheva_TP.pdf -- 1154.0 Кб -- 16.12.2013
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16. http://antares.sinp.msu.ru/docs/INFN%20-%20ANTARES.pdf
... We designed a prototype of a direction-sensitive optical mo dule (DOM) and we accordingly mo dified the simulation and reconstruction codes [2] currently used by the ANTARES Collaboration to study the response of the detector. The DOM is based on a position-sensitive photomultiplier coupled to a light guide system such that all the Cherenkov light arriving from the same direction is fo cussed on a reduced area of the photo catho de. ... Left: standard optical module; right: DOM. ...
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Ссылки http://antares.sinp.msu.ru/docs/INFN%20-%20ANTARES.pdf -- 190.2 Кб -- 16.12.2013
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17. http://antares.sinp.msu.ru/docs/INFN%20-%20NEMO.pdf
ISTITUTO NAZIONALE DI FISICA NUCLEARE Sezione di Genova INFN/TC-08/02 23 June 2008 STUDY OF THE RESPONSE OF THE NEMO-KM3 DETECTOR INSTRUMENTED WITH DIRECTION-SENSITIVE OPTICAL MODULE M. Anghinolfi1 , M. Bersani1 , K. Fratini1 , V. Kulikovsky2, M. Osipenko1, A. Plotnikov2, E. Shirokov2, M. Taiuti1 , S. Zavatarelli1 ... Physics, Moscow State University, 119899 Moscow, Russia Abstract We studied the performances of the underwater neutrino telescope NEMO-KM3 ...
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Ссылки http://antares.sinp.msu.ru/docs/INFN%20-%20NEMO.pdf -- 266.4 Кб -- 16.12.2013
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18. http://antares.sinp.msu.ru/docs/NIMA.pdf
... To efficiently cover 1 km detection volume it would be necessary to deploy % 104 photomultipliers whose main requirements are a relatively large photocathode area, high gain, low noise, low after pulse rate and good timing resolution for single photon detection, the exact values depending on the detector design. ... Instr. and Meth. ... We identified four different types of secondary pulse according to the following definitions: Pre-pulse: pulses arriving at 10-80 ns before the main pulse, Fig. ...
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Ссылки http://antares.sinp.msu.ru/docs/NIMA.pdf -- 1054.5 Кб -- 16.12.2013
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19. http://antares.sinp.msu.ru/docs/Yakovenko%20-%20Term%20paper.pdf
... H O Na Mg Cl Z 1 8 11 12 17 A 1.00794 15.9994 22.9898 24.3050 35.4527 w 0.1074 0.8541 0.0132 0.0015 0.0237 4 40K. 40K: 40Ca (89,28%) 40Ar (10.72%) 1,460 . ... N * 106 100 100 100 300 450 R, m 12 14 16 18 20 N * 106 4900 1100 1700 2000 2500 R, m 35 40 45 80 N * 106 2000 3000 2000 6000 7 . ... Simulations of the 40K noise in the ANTARES environment with Geant4 M.Anghinolfi, H.Costantini, K.Fratini, M.Taiuti INFN, Sezione di Genova, Dip. di Fisica, Univ. di Genova, I-16146 Genova, Italy March 18, 2008...
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Ссылки http://antares.sinp.msu.ru/docs/Yakovenko%20-%20Term%20paper.pdf -- 302.6 Кб -- 16.12.2013
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20. http://antares.sinp.msu.ru/docs/Afanasiev%20-%20BMS.pdf
... 0.1ґ1 ( ). ... 1021 100 . ... 1011 . ... Robotron ( 50 , 20 - 200 ) 7-1 ( 10 , 10-100 ). ... 1 , 104 0.1 . ... 100 , , . ... i- tmin , 4 1 2, . tmin-120 <t<tmin+5 ) . ... Nikolai G. Lehtinen et al. :astro-ph/0104033 2. Gunter Sigl :astro-ph/0104291 3. ... Abbasi R.U. et al. :astro-ph/0208301 7. .., .. . 2007, 3 (ru.arxiv.org/pdf/physics/0610241). ...
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Ссылки http://antares.sinp.msu.ru/docs/Afanasiev%20-%20BMS.pdf -- 332.3 Кб -- 16.12.2013
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