Geant 4 Detector Simulation
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Thursday, July 23, 2009
Tuesday, July 14, 2009
Geant 4 Detector Simulation
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Geant 4 Detector Simulation
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Thursday, May 28, 2009
Geant 4 Detector Simulation
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Geant 4 Detector Simulation
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Tuesday, April 28, 2009
PVDIS over a broad kinematic range
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Monday, April 6, 2009
July CLEO-c Meeting: Measurement of the absolute Branching Fraction for Ds -> tau nu, tau -> e nu nu and Inclusive Ds -> X e nu @ Cornell Uni.
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June CLEO-c Meeting: Measurement of the absolute Branching Fraction for Ds -> tau nu, tau -> e nu nu @ Cornell Uni.
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May CLEO-c Meeting: Measurement of the absolute Branching Fraction for Ds -> tau nu, tau -> e nu nu @ Cornell Uni.
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Monitor Hlt Raw Data @ LHCb
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Monitor Hlt Raw Data @ LHCb
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Wednesday, March 25, 2009
Mindy's Research Story
Course Works:
I have taken a couple of required graduate-level courses at Syracuse University since fall 2007. In addition to core-courses, I took three independent study courses, including obtaining the improved measurement of branching fraction for Ds -> t au nu (tau -> e nu nu) and inclusive Ds -> X e nu as well with 100% more data collected at CLEO-c (Cornell University, Ithaca, US), and developing some software works, like constructing several crude algorithms used on HLT (High-Level-Trigger level-1 & level-2) raw data monitoring at monitoring farms (MF) as well as event filter farms (EFF) and in offline data-processing for LHCb experiment at CERN (Geneva, Switzerland). Now, I am specifically responsible for performing some simple monitoring algorithms used on tracks in the offline environment, i.e. MF. These monitoring algorithms won’t be directly applied on HLT in the on-line environment, i.e. EFF; instead, they are used to monitor not only offline tracks but tracking reconstructions that correspond to trigger objects using TisTosTobbing method with respect to offline performances. Besides, all of the same calibration and alignment constants obtained from on-line EFF of HLT will be migrated into these offline monitoring algorithms. According to this study, we could make sure how much worse those on-line calibration constants were. In sum, the offline algorithm could be provided to compare the output of re-run HLT in off-line with that stored in HLT raw data.
Research Experiences:
Since fall 2003, I focused my research works on B-Physics-related analyses using data accumulated at Belle, KEK (Tsukuba, Japan). I gave several talks at monthly DCPV/Rare (Direct CP Violation/Rare Decays) internal meetings and BAM/BGM (Belle Analysis/General) meetings. In 2005, I finished my first data-analysis and published one conference paper on-line in hep-ex/0508052; this conference paper was presented at the following two conferences: one is “HEP2005 EPS International Europhysics Conference on High Energy Physics” in Portugal, and the other is “PANIC 05-XVII International Conference on Particles and Nuclei” in the USA. Due to the collective endeavor of collaborators, the journal paper on behalf of the Belle collaboration was accepted to be published in PRD(RC) 74, 111101 (2006). During the first half of 2006, I participated in Taiwan experiment on neutrino and worked on the calibration of CsI (Tl) data. During 2008 summer, I started working on my second data-analysis and thus gave three talks presented in CLEO-c internal meetings. The results, appeared in the third talk at CLEO's July meeting, were fully approved by another group, where they adapted the other different approach to obtain similar measurements. I thus successfully cross checked the latest up-to-date measurements with data, the statistics of which is a factor of two larger than the previously published results, and accordingly, I verified both of measurements, well-done by Rochester and Syracuse groups, were nearly the same. Since fall 2008, I wholly participated in LHC-related projects. I started learning how to get myself accustomed to LHCb-related software tools, and meanwhile, I wrote a few of simple algorithms used to obtain the size of HLT raw bank, where it contains distinct type of objects, i.e. track, rec-vertices, proto-particles, particles, and the size of information, and the efficiency of every type of individual L0 (hardware-) trigger line. Additionally, I also applied another newly developed tool to obtain the threshold value for every individual trigger line. During spring 2009, I worked on the development of algorithms used to monitor tracks coming from offline and HLT, respectively, and most importantly, I also evaluated the resolutions as well as efficiencies achieved in trigger reconstructions with respect to detailed offline reconstructions. I eventually gave a talk presented in LHCb Tracking & Alignment Workshop. My talk at the workshop resulted in useful exchange with other colleagues, which led me to better understanding of interpretation of my results. The firstly reported result was subsequently improved better and thus mentioned again in LHCb meeting [Plenary II: Physics software & HLT session (February 26), Tracking Report (20') Johannes Albrecht (PI Heidelberg)] later on. Lastly, this project, named HLT data monitoring, will be finished by the end of spring 2009, and moreover, my monitoring code will be put in the public area for LHCb users.
I have taken a couple of required graduate-level courses at Syracuse University since fall 2007. In addition to core-courses, I took three independent study courses, including obtaining the improved measurement of branching fraction for Ds -> t au nu (tau -> e nu nu) and inclusive Ds -> X e nu as well with 100% more data collected at CLEO-c (Cornell University, Ithaca, US), and developing some software works, like constructing several crude algorithms used on HLT (High-Level-Trigger level-1 & level-2) raw data monitoring at monitoring farms (MF) as well as event filter farms (EFF) and in offline data-processing for LHCb experiment at CERN (Geneva, Switzerland). Now, I am specifically responsible for performing some simple monitoring algorithms used on tracks in the offline environment, i.e. MF. These monitoring algorithms won’t be directly applied on HLT in the on-line environment, i.e. EFF; instead, they are used to monitor not only offline tracks but tracking reconstructions that correspond to trigger objects using TisTosTobbing method with respect to offline performances. Besides, all of the same calibration and alignment constants obtained from on-line EFF of HLT will be migrated into these offline monitoring algorithms. According to this study, we could make sure how much worse those on-line calibration constants were. In sum, the offline algorithm could be provided to compare the output of re-run HLT in off-line with that stored in HLT raw data.
Research Experiences:
Since fall 2003, I focused my research works on B-Physics-related analyses using data accumulated at Belle, KEK (Tsukuba, Japan). I gave several talks at monthly DCPV/Rare (Direct CP Violation/Rare Decays) internal meetings and BAM/BGM (Belle Analysis/General) meetings. In 2005, I finished my first data-analysis and published one conference paper on-line in hep-ex/0508052; this conference paper was presented at the following two conferences: one is “HEP2005 EPS International Europhysics Conference on High Energy Physics” in Portugal, and the other is “PANIC 05-XVII International Conference on Particles and Nuclei” in the USA. Due to the collective endeavor of collaborators, the journal paper on behalf of the Belle collaboration was accepted to be published in PRD(RC) 74, 111101 (2006). During the first half of 2006, I participated in Taiwan experiment on neutrino and worked on the calibration of CsI (Tl) data. During 2008 summer, I started working on my second data-analysis and thus gave three talks presented in CLEO-c internal meetings. The results, appeared in the third talk at CLEO's July meeting, were fully approved by another group, where they adapted the other different approach to obtain similar measurements. I thus successfully cross checked the latest up-to-date measurements with data, the statistics of which is a factor of two larger than the previously published results, and accordingly, I verified both of measurements, well-done by Rochester and Syracuse groups, were nearly the same. Since fall 2008, I wholly participated in LHC-related projects. I started learning how to get myself accustomed to LHCb-related software tools, and meanwhile, I wrote a few of simple algorithms used to obtain the size of HLT raw bank, where it contains distinct type of objects, i.e. track, rec-vertices, proto-particles, particles, and the size of information, and the efficiency of every type of individual L0 (hardware-) trigger line. Additionally, I also applied another newly developed tool to obtain the threshold value for every individual trigger line. During spring 2009, I worked on the development of algorithms used to monitor tracks coming from offline and HLT, respectively, and most importantly, I also evaluated the resolutions as well as efficiencies achieved in trigger reconstructions with respect to detailed offline reconstructions. I eventually gave a talk presented in LHCb Tracking & Alignment Workshop. My talk at the workshop resulted in useful exchange with other colleagues, which led me to better understanding of interpretation of my results. The firstly reported result was subsequently improved better and thus mentioned again in LHCb meeting [Plenary II: Physics software & HLT session (February 26), Tracking Report (20') Johannes Albrecht (PI Heidelberg)] later on. Lastly, this project, named HLT data monitoring, will be finished by the end of spring 2009, and moreover, my monitoring code will be put in the public area for LHCb users.
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