tipp2014

tipp2014@nikhef.nl

1261 discussions

[Tipp2014] [Indico] New abstract submission: Prof. MAZUMDAR, Kajari
by noreply-indico-team＠cern.ch 10 Feb '14

10 Feb '14

The following email has been sent to Prof. MAZUMDAR, Kajari: === Dear Kajari Mazumdar, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/212/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: Prof. MAZUMDAR, Kajari Submitted on: 10 February 2014 13:21 Title: The CMS electromagnetic calorimeter barrel upgrade for High- Luminosity LHC Abstract content The High Luminosity LHC (HL-LHC) will provide unprecedented instantaneous and integrated luminosity. The lead tungstate crystals forming the barrel part of the CMS Electromagnetic Calorimeter (ECAL) will still perform well, even after the expected 3000 fb-1 at the end of HL-LHC. The avalanche photodiodes (APDs) used to detect the scintillation light have recently been exposed to the levels of radiation expected at the end of HL-LHC. Although they will continue to be operational, there will be some increase in noise due to radiation-induced dark-currents. Triggering on electromagnetic objects with ~140 pileup events necessitates a change of the front-end electronics. New developments in high-speed optical links will allow single-crystal readout at 40 MHz to upgraded off-detector processors, allowing maximum flexibility and enhanced triggering capabilities. The very-front-end system will also be upgraded, to provide improved rejection of anomalous signals in the APDs as well as to mitigate the increase in APD noise. We are also considering lowering the ECAL barrel operating temperature from 18 degrees C to about 8-10 degrees C, in order to increase the scintillation light output and reduce the APD dark current. Summary Primary Authors: Prof. MAZUMDAR, Kajari (Tata Inst. of Fundamental Research (IN)) <kajari.mazumdar(a)cern.ch> Co-authors: Abstract presenters: Prof. MAZUMDAR, Kajari Track classification: Sensors: 1a) Calorimetry Presentation type: --not specified-- Comments: Kajari Mazumdar submits this abstract on behalf of conference committee of CMS collaboration at LHC. Name of the actual speaker will be specified later.

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[Tipp2014] [Indico] New abstract submission: ORFANELLI, Stella
by noreply-indico-team＠cern.ch 10 Feb '14

10 Feb '14

The following email has been sent to ORFANELLI, Stella: === Dear Stella Orfanelli, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/211/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: ORFANELLI, Stella Submitted on: 10 February 2014 12:08 Title: Design of CMS Beam Halo Monitor system Abstract content A fast and directional monitoring system for the CMS experiment is designed to provide an online, bunch-by-bunch measurement of beam background induced by beam halo interactions, separately for each beam. The background detection is based on Cherenkov radiation produced in synthetic fused silica read out by a fast, UV sensitive photomultiplier tube. Twenty detector units per end will be azimuthally distributed around the rotating shielding of CMS, covering ~408 cm2 at 20.6m from the interaction point, at a radius of ~180 cm. The directional and fast response of the system allows the discrimination of the background particles from the dominant flux in the cavern induced by pp collision debris, produced within the 25 ns bunch spacing. A robust multi-layered shielding will enclose each detector unit to protect the photomultiplier tube from the magnetic field and to eliminate the occupancy from low energy particles. The design of the front-end units is validated by experimental results. An overview of the new system to be integrated in CMS during the current shutdown of LHC will be presented, and its perspective for monitoring in High Luminosity LHC. Summary Primary Authors: ORFANELLI, Stella (National Technical Univ. of Athens (GR)) <styliani.orfanelli(a)cern.ch> Co-authors: DABROWSKI, Anne (CERN) <anne.evelyn.dabrowski(a)cern.ch> GIUNTA, Marina (A.D.A.M. Applications of Detectors and accelerators to Medicine) <marina.giunta(a)cern.ch> AMBROSE, Mitchell James (University of Minnesota (US)) <ambr0071(a)umn.edu> FINKEL, Alexey (University of Minnesota (US)) <alexeyfinkel01(a)gmail.com> RUSACK, Roger (University of Minnesota (US)) <roger.rusack(a)cern.ch> STICKLAND, David Peter (Princeton University (US)) <david.peter.stickland(a)cern.ch> Abstract presenters: ORFANELLI, Stella Track classification: Experiments: 2a) Experiments & Upgrades Presentation type: Oral Comments:

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[Tipp2014] [Indico] New abstract submission: Prof. MAZUMDAR, Kajari
by noreply-indico-team＠cern.ch 10 Feb '14

10 Feb '14

The following email has been sent to Prof. MAZUMDAR, Kajari: === Dear Kajari Mazumdar, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/210/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: Prof. MAZUMDAR, Kajari Submitted on: 10 February 2014 12:06 Title: Luminosity measurement at CMS Abstract content The measurement of the luminosity delivered by the LHC is pivotal for several key physics analyses. During the first three years of running, tremendous steps forwards have been made in the comprehension of the subtleties related to luminosity monitoring and calibration, which led to an unprecedented accuracy at a hadron collider. The detectors and corresponding algorithms employed to estimate online and offline the luminosity in CMS are described. Details are given concerning the procedure based on the Van der Meer scan technique that allowed a very precise calibration of the luminometers from the determination of the LHC beams parameters. What is being prepared in terms of detector and online software upgrades for the next LHC run is also summarized. Summary Primary Authors: Prof. MAZUMDAR, Kajari (Tata Inst. of Fundamental Research (IN)) <kajari.mazumdar(a)cern.ch> Co-authors: Abstract presenters: Prof. MAZUMDAR, Kajari Track classification: Experiments: 2a) Experiments & Upgrades Presentation type: --not specified-- Comments: Kajari Mazumdar submits this abstract on behalf of Conference Committee of CMS collaboration at LHC. Name of the actual presenter will be specified later.

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[Tipp2014] [Indico] New abstract submission: Prof. MAZUMDAR, Kajari
by noreply-indico-team＠cern.ch 10 Feb '14

10 Feb '14

The following email has been sent to Prof. MAZUMDAR, Kajari: === Dear Kajari Mazumdar, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/209/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: Prof. MAZUMDAR, Kajari Submitted on: 10 February 2014 12:03 Title: Preparing Electrons and Photons High Level Trigger Reconstruction in CMS for Run II data taking Abstract content The CMS experiment has been designed with a 2-level trigger system. The first level is implemented on custom-designed electronics. The second level is the so-called High Level Trigger (HLT), a streamlined version of the CMS offline reconstruction software running on a computer farm. For Run II of the Large Hadron Collider, the increase in center-of-mass energy and luminosity will raise the event rate to a level challenging for the HLT algorithm. New approaches have been studied to keep the HLT output rate manageable while maintaining thresholds low enough to cover physics analyses. The strategy mainly relies on porting online the ingredients that have been successfully applied in the offline reconstruction, thus allowing to move HLT selection closer to offline cuts. We will present such improvements in the definitions of HLT electrons and photons, focusing in particular on the deployment of a new superclustering algorithm allowing pileup mitigation, a new Particle-Flow-based isolation replacing the less powerful detector-based approach, and an electron-dedicated track fitting algorithm based on a Gaussian Sum Filter. Summary Primary Authors: Prof. MAZUMDAR, Kajari (Tata Inst. of Fundamental Research (IN)) <kajari.mazumdar(a)cern.ch> Co-authors: Abstract presenters: Prof. MAZUMDAR, Kajari Track classification: Data-processing: 3b) Trigger and Data Acquisition Systems Presentation type: --not specified-- Comments: Kajari Mazumdar submits the abstract on behalf of Conference committee of CMS collaboration at LHC. Name of the actual presenter will be specified later

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[Tipp2014] [Indico] New abstract submission: Prof. MAZUMDAR, Kajari
by noreply-indico-team＠cern.ch 10 Feb '14

10 Feb '14

The following email has been sent to Prof. MAZUMDAR, Kajari: === Dear Kajari Mazumdar, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/208/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: Prof. MAZUMDAR, Kajari Submitted on: 10 February 2014 12:00 Title: B-tagging at High Level Trigger in CMS Abstract content The CMS experiment has been designed with a 2-level trigger system. The Level 1 Trigger is implemented on custom-designed electronics. The High Level Trigger (HLT) is a streamlined version of the CMS offline reconstruction software running on a computer farm. Using b-tagging at trigger level will play a crucial role during the Run II data taking to ensure the Top quark, beyond the Standard Model and Higgs boson physics programme of the experiment. It will help to significantly reduce the trigger output rate which will increase due to the higher instantaneous luminosity and higher cross sections at 13 TeV. B-tagging algorithms based on the identification of tracks displaced from the primary proton-proton collision or on the reconstruction of secondary vertices have been successfully used during Run I. We will present their design and performance with an emphasis on the dedicated aspects of track and primary vertex reconstruction, as well as the improvements foreseen to meet the challenges of the Run II data taking (high track multiplicity, out-of-time pile-up). Summary Primary Authors: Prof. MAZUMDAR, Kajari (Tata Inst. of Fundamental Research (IN)) <kajari.mazumdar(a)cern.ch> Co-authors: Abstract presenters: Prof. MAZUMDAR, Kajari Track classification: Data-processing: 3b) Trigger and Data Acquisition Systems Presentation type: --not specified-- Comments: Kajari Mazumdar is submitting the abstract on behalf of the conference committee of CMS collaboration at LHC. The name of the actual presenter will be specified later.

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[Tipp2014] [Indico] New abstract submission: Prof. MAZUMDAR, Kajari
by noreply-indico-team＠cern.ch 10 Feb '14

10 Feb '14

The following email has been sent to Prof. MAZUMDAR, Kajari: === Dear Kajari Mazumdar, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/207/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: Prof. MAZUMDAR, Kajari Submitted on: 10 February 2014 11:54 Title: Evaluation of a commercial FPGA for use in the CMS HCAL Upgrade Abstract content The CMS Hadron Calorimeter is undertaking a upgrade of front-end electronics which increases the channel count by a factor of three and adds additional TDC data. To transfer the larger data volume off-detector, CMS is evaluating a commercial FPGA with integrated high-speed serial link for use in the radiation environment. This talk will report on the studies of the candidate device under ionzing and hadron irradiation, which will inform the possible use of these components for other uses in particle physics detectors. Summary Primary Authors: Prof. MAZUMDAR, Kajari (Tata Inst. of Fundamental Research (IN)) <kajari.mazumdar(a)cern.ch> Co-authors: Abstract presenters: Prof. MAZUMDAR, Kajari Track classification: Data-processing: 3a) Front-end Electronics Presentation type: --not specified-- Comments: Kajari Mazumdar is submitting this abstract on behalf of Conference committee of CMS collaboration at LHC. Name of the actual presenter will be specified later.

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[Tipp2014] [Indico] New abstract submission: VISSER, Janvs
by noreply-indico-team＠cern.ch 10 Feb '14

10 Feb '14

The following email has been sent to VISSER, Janvs: === Dear Janvs Visser, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/206/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: VISSER, Janvs Submitted on: 10 February 2014 10:59 Title: test Abstract content blabla test Summary Primary Authors: VISSER, Janvs (NIKHEF (NL)) <janvs(a)nikhef.nl> Co-authors: Abstract presenters: VISSER, Janvs Track classification: Technology transfer: 5c) Biology&Material Science Presentation type: --not specified-- Comments:

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[Tipp2014] Technology and Instrumentation in Particle... has been listed on Global Events List
by Global Events List 10 Feb '14

10 Feb '14

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[Tipp2014] [Indico] New abstract submission: RANJEET, Ranjeet
by noreply-indico-team＠cern.ch 10 Feb '14

10 Feb '14

The following email has been sent to RANJEET, Ranjeet: === Dear Ranjeet Ranjeet, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/205/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: RANJEET, Ranjeet Submitted on: 10 February 2014 05:59 Title: Development of Radiation Damage Model using TCAD tools for Irradiated Silicon Sensors Abstract content During the high luminosity upgrade of LHC the CMS tracking system consisting of silicon pixel and strip sensors will face intense radiation environment than the present system was designed for. It is important to complement the measurements of the irradiated Si strip sensors with device simulation, which helps in both the understanding of the device behavior and optimizing the design parameters needed for future CMS Tracker Upgrade. Thus, one of the important ingredient of the device simulation is to develop a radiation damage model incorporating both bulk and surface damage. In this work, we demonstrate the development of radiation damage model using TCAD tools, which successfully explains the recent measurements like leakage current, depletion voltage, interstrip capacitance and interstrip resistance, and provides an insight into the performance of irradiated Si strip sensors. Summary A systematic development of a new radiation damage model, for hadron irradiation, will be presented. This model consider surface and bulk damage simultaneously and is capable of explaining the strip sensors and diode measurements like, leakage current, depletion voltage, interstrip resistance, interstrip capacitance etc. It further provide insight into observed good interstrip resistance with low p-stop/p-spray insulation structures for proton irradiated n+p strip sensors. This model was used to simulate the sensor properties for CMS Phase-II tracker upgrade campaign. Primary Authors: DALAL, Ranjeet (University of Delhi) <ranjeetdalal(a)gmail.com> Co-authors: BHARDWAJ, Ashutosh (University of Delhi (IN)) <ashutosh.bhardwaj(a)cern.ch> EBER, Robert (KIT - Karlsruhe Institute of Technology (DE)) <robert.eber(a)kit.edu> MESSINEO, Alberto (Sezione di Pisa (IT)) <alberto.messineo(a)cern.ch> RANJAN, Kirti (University of Delhi (IN)) <kirti.ranjan(a)cern.ch> LALWANI, Kavita (University of Delhi (IN)) <kavita.lalwani(a)cern.ch> PELTOLA, Timo Hannu Tapani (Helsinki Institute of Physics (FI)) <timo.hannu.tapani.peltola(a)cern.ch> EICHHORN, Thomas (DESY) <thomas.eichhorn(a)desy.de> Abstract presenters: DALAL, Ranjeet Track classification: Sensors: 1b) Semiconductor Detectors Presentation type: Poster Comments:

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[Tipp2014] [Indico] New abstract submission: BERNARDES MONTEIRO, Cristina
by noreply-indico-team＠cern.ch 07 Feb '14

07 Feb '14

The following email has been sent to BERNARDES MONTEIRO, Cristina: === Dear Cristina Bernardes Monteiro, The submission of your abstract has been successfully processed. Abstract submitted: <https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts>. Status of your abstract: <https://indico.cern.ch/event/192695/call- for-abstracts/204/>. See below a detailed summary of your submitted abstract: Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics Submitted by: BERNARDES MONTEIRO, Cristina Submitted on: 07 February 2014 14:49 Title: The NEXT detector: an Electroluminescence Xenon TPC for neutrinoless double beta decay detection Abstract content The NEXT Experiment aims to detect neutrinoless double beta decay using an HPXe TPC based on electroluminescence to be deployed in the Canfranc Underground Laboratory. New-generation experiments for double beta decay detection need to be sensitive to lifetimes longer than 1025 years. One remarkable challenge is the conception of a detector that enables an efficient and unambiguous identification of such a signal. Of the different detection techniques available, one has been chosen based on its suitability for complying with the key demands of this particular experiment: the capability to achieve an optimal energy resolution at the Xe Qββ energy (2.458 MeV), the event topology reconstruction competence to identify the distinct dE/dx of electron tracks, capability of high background suppression and the aptitude to be expanded to a large-scale system. Electroluminescence as the amplification technique for the primary ionisation and SiPM as the readout sensors for the topological recognition have been the elected means to integrate the experiment, combined in a high-pressure xenon Time Projection Chamber. Prototypes on which extensive studies have been performed already offered very promising results. One of these large prototypes is NEXT-DEMO, a TPC based on electroluminescence that validates the feasibility of the NEXT detector concept. This prototype is being upgraded to NEXT-NEW, which will fully operate in Canfranc Underground Laboratory. In this work, results will be presented and considerations will be made on both NEXT-DEMO and NEXT-NEW. Summary The Neutrino Experiment with a Xenon TPC (NEXT) aims to detect neutrinoless double beta decay using a high-pressure Xe-136 TPC based on electroluminescence to be deployed in the Canfranc Underground Laboratory, Spain. New-generation experiments for double beta decay detection need to be sensitive to lifetimes longer than 1025 years. One remarkable defy is the conception of a detector that enables an efficient and unambiguous identification of such a signal. For NEXT, the detection technique has been chosen based on its suitability for complying with the key demands of this particular experiment: the capability to achieve an optimal energy resolution at the Xe Qββ energy (2.458 MeV), the event topology reconstruction competence proving the possibility to identify the distinct dE/dx of electron tracks, capability of high background suppression and the aptitude to be expanded to a large-scale system. To achieve optimal energy resolution, electroluminescence has been chosen as the amplification technique for the primary ionisation of xenon, over the charge amplification technique. As for the readout planes, the chamber will have distinct detection planes for calorimetry and tracking, behind cathode and anode, respectively. SiPMs have been elected as the readout sensors for the topological recognition and PMTs for the energy plane. The detection process is as follows: Particles interacting in the HPXe transfer their energy to the medium through ionisation and excitation. The excitation energy is patent in the prompt emission of VUV (around 178 nm) scintillation light from the xenon gas. The ionisation tracks (positive ions and free electrons) left behind by the particle are prevented from recombine applying an electric field of 0.3–0.5 kV per cm. The ionisation electrons drift toward the TPC anode, entering a region, delimited by two highly-transparent meshes, with an even more intense electric field, 3 kV per cm per bar. There, further VUV photons are formed isotropically by electroluminescence processes. Hence, both primary scintillation and primary ionisation produce an optical signal, which is detected in the energy plane with PMTs, located behind the cathode. The detection of the primary scintillation light constitutes the start-of-event, whereas the detection of electroluminescence light provides an energy measurement. Electroluminescent light provides tracking as well, since it is detected also at the anode plane, by means of an array of 1-mm2 SiPMs, 1cm in pitch, placed a few millimetres away from the electroluminescence region, Fig.1. Prototypes using the above described features, on which extensive studies have been performed, already offered very promising results. One of these large prototypes is NEXT-DEMO, which validates the feasibility of the NEXT detector concept. NEXT-DEMO has been fully operational at IFIC, Valencia, since 2011. A near-intrinsic energy resolution has been reached in the NEXT-DEMO prototype with a value of about 1.8% FWHM for 511 keV electrons, extrapolating to about 0.8% FWHM at Qββ=2.458 MeV, Fig.2. Fig.1: The Separate, Optimized Functions (SOFT) concept in the NEXT experiment: EL light generated at the anode is recorded in the photosensor plane right behind it and used for tracking; it is also recorded in the photosensor plane behind the transparent cathode and used for a precise energy measurement. Fig. 2: Energy spectrum for 511 keV gammas interacting in NEXT-DEMO. From the low- to the high energy-region, one can clearly identify the X-ray peak (~30 keV), the Compton continuum (100-340 keV), the X-ray escape peak (~480 keV) and the photo-electric peak (full energy). The SiPM-based read-out planes in NEXT-DEMO have clearly demonstrated the good tracking capability of the chosen design. Straight cosmic-ray muon tracks, ~500 keV electron tracks dominated by multiple Coulomb scattering, and isolated X-ray energy deposition of about 30 keV have been reconstructed. On the other hand, the tracking plane information can be combined with the energy (PMT) plane information in order to identify the number of Bragg peaks signaling the number of electrons ranging out in the detector. This is useful for ββ0 searches, since the “blob", i.e., a track segment with higher energy deposition, multiplicity per event is expected to provide an additional background suppression factor. Signal events tend to yield two “blobs" from two electrons emanating from a common vertex. In the case of background, dominated by gamma interactions, only one “blob" per event is typically expected. Energy blobs where electron tracks range out have been clearly identified in NEXT-DEMO using the energy plane information, by projecting the electron tracks’ dE/dx pattern along the drift direction, Fig.3. Fig. 3: The reconstructed track left by a photoelectric electron produced by the interaction of a 662-keV gamma (from a 137Cs calibration source) detected by NEXT-DEMO. NEXT-DEMO has been upgraded to NEXT-NEW, which will fully operate in Canfranc Underground Laboratory. The assembly and commissioning of the detector is planned for 2014. In this presentation, results from NEXT-DEMO will be presented and considerations will be made on both NEXT-DEMO and NEXT-NEW. Primary Authors: Dr. MONTEIRO, Cristina M. B. (University of Coimbra) (on behalf of the NEXT Collaboration) <cristina(a)gian.fis.uc.pt> Co-authors: Abstract presenters: Dr. MONTEIRO, Cristina M. B. Track classification: Experiments: 2a) Experiments & Upgrades Experiments: 2c) Detectors for neutrino physics Presentation type: Oral Comments:

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