FHTestBeam

Latest additions:
2019-12-06
12:41
OpenAccess [PUBDB-2019-04814] Book/Report/Dissertation / PhD Thesis
et al
Silicon Pixel Detectors - Performance after Irradiation and Application in Three-dimensional Imaging
[DESY-THESIS-2019-030]
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS 251 pp. () [10.3204/PUBDB-2019-04814] = Dissertation, Universität Hamburg, 2019  GO
This dissertation addresses two applications of silicon pixel detectors as tracking devices, namely the applications in high energy physics experiments and in a novel tomographic technique termed material budget imaging.For current and future experiments in high energy physics, one of the main challenges for the development of silicon detectors is the immense radiation fluence received over the years of operation.In this thesis, the performance of silicon pixel detectors for the tracking detector of the Compact Muon Solenoid (CMS) experiment is investigated for fluences of up to $\Phi_{eq}= 1.39\times10^{15}$n/cm$^2$ close to the expected lifetime fluence of the innermost layer of the barrel pixel detector. Measurements conducted at the DESY II Test Beam Facility show, that the maximum collected charge is reduced significantly by the high radiation fluences, but that an efficiency of above 99 % can be maintained when applying reasonable bias voltages.The voltage required to fully deplete the sensor rises up to around 600 V.The effective Lorentz angle of unirradiated detector modules and a module irradiated to a fluence of $\Phi_{eq}= 4\times10^{14}$n/cm$^2$ was determined for various bias voltages using a 1.34 T magnetic field.The findings imply that the high bias voltages required for an efficient operation of radiation damaged pixel detectors will impair the resolution of the detector modules significantly.The second application investigated is the use of silicon pixel detectors for an imaging technique aiming to reconstruct the three-dimensional material distribution of arbitrary samples.Using the high-resolution EUDET-type Beam Telescopes available at the DESY II Test Beam Facility to measure the scattering angle of relativistic particles when traversing a sample allows for the determination of its projected material budget in two dimensions.A rotation of the sample and an inverse Radon transform facilitates a reconstruction of the sample's internal structure.Simulations of this technique are presented as well as the first acquired three-dimensional material budget images.The simulations and an evaluation of the underlying two-dimensional images indicate a possible resolution of this method of less than 20 $\mu$m at a sufficiently high contrast-to-noise ratio.The potential and the limits of material budget imaging as well as possible future applications and developments are discussed..
OpenAccess: desy-thesis-19-030.title - Download fulltextPDF Download fulltextPDF (PDFA); ThesisPaulSchuetze - Download fulltextPDF;

Detailed record - Similar records
2019-11-11
14:37
[PUBDB-2019-04108] Poster
et al
A versatile Trigger-DAQ system for test beams and more
2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, IEEE NSS/MIC 2019, ManchesterManchester, England, 26 Oct 2019 - 2 Nov 20192019-10-262019-11-02
Restricted: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2019-01-28
13:39
OpenAccess [PUBDB-2019-00789] Report/Journal Article
et al
Efficiency and timing performance of the MuPix7 high-voltage monolithic active pixel sensor
[arXiv:1803.01581]
The MuPix7 is a prototype high voltage monolithic active pixel sensor with 103×80μm2 pixels thinned to 64 μ m and incorporating the complete read-out circuitry including a 1.25 Gbit/s differential data link. Using data taken at the DESY electron test beam, we demonstrate an efficiency of 99.3 % and a time resolution of 14 ns. [...]
OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:530
Detailed record - Similar records
2019-01-28
09:53
arXiv [PUBDB-2019-00747] Report/Journal Article

Detailed measurements of shower properties in a high granularity digital electromagnetic calorimeter
[arXiv:1801.02185]
International Conference on Calorimetry for the High Energy Frontier, LyonLyon, France, 2 Oct 2017 - 6 Oct 20172017-10-022017-10-06
Contributions / Info
Journal of Instrumentation 13(03), C03030 - C03030 () [10.1088/1748-0221/13/03/C03030]  GO
The MAPS (Monolithic Active Pixel Sensors) prototype of the proposed ALICE Forward Calorimeter (FoCal) is the highest granularity electromagnetic calorimeter, with 39 million pixels with a size of 30 × 30 μm2. Particle showers can be studied with unprecedented detail with this prototype. [...]
Fulltext: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:610
Detailed record - Similar records
2019-01-28
09:38
OpenAccess [PUBDB-2019-00740] Journal Article
et al
The FoCal prototype—an extremely fine-grained electromagnetic calorimeter using CMOS pixel sensors
A prototype of a Si-W EM calorimeter was built with Monolithic Active Pixel Sensorsas the active elements. With a pixel size of 30 m it allows digital calorimetry, i.e. [...]
OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:610
Detailed record - Similar records
2019-01-10
16:27
arXiv [PUBDB-2019-00340] Report/Journal Article

Latest R&D news and beam test performance of the highly granular SiW-ECAL technological prototype for the ILC
[AIDA-2020-CONF-2017-010; arXiv:1802.08806]
International Conference on Calorimetry for the High Energy Frontier, LyonLyon, France, 2 Oct 2017 - 6 Oct 20172017-10-022017-10-06
Contributions / Info
Journal of Instrumentation 13(02), C02038 - C02038 () [10.1088/1748-0221/13/02/C02038]  GO
High precision physics at future colliders as the International Linear Collider (ILC) require unprecedented high precision in the determination of the energy of final state particles. The needed precision will be achieved thanks to the Particle Flow algorithms (PF) which require highly granular and hermetic calorimeters systems. [...]
Fulltext: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:610
Detailed record - Similar records
2019-01-10
13:35
Embargoed OpenAccess [PUBDB-2019-00294] Report/Journal Article
et al
TCAD simulations of pixel sensors for the ATLAS ITk upgrade and performance of annealed planar pixel modules
[arXiv:1810.10872]
20th International Workshop on Radiation Imaging Detectors, SundsvallSundsvall, Sweden, 24 Jun 2018 - 28 Jun 20182018-06-242018-06-28
Contributions / Info
Journal of Instrumentation 13(11), C11001 - C11001 () [10.1088/1748-0221/13/11/C11001]  GO
For the high luminosity phase of the Large Hadron Collider to start operation around 2026, a major upgrade of the ATLAS Inner Tracker (ITk) is in preparation. Thanks to their low power dissipation and high charge-collection efficiency after irradiation, thin planar pixel modules are the baseline option to instrument all, except for the innermost layer of the pixel detector. [...]
Published on 2018-11-05. Available in OpenAccess from 2019-11-05.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:610
Detailed record - Similar records
2019-01-10
11:06
Embargoed OpenAccess [PUBDB-2019-00269] Report/Journal Article
et al
Characterisation of novel thin n-in-p planar pixel modules for the ATLAS Inner Tracker upgrade
[arXiv:1801.02863]
11th International Conference on Position Sensitive Detectors, Milton KeynesMilton Keynes, UK, 3 Sep 2017 - 8 Sep 20172017-09-032017-09-08
Contributions / Info
Journal of Instrumentation 13(01), C01009 - C01009 () [10.1088/1748-0221/13/01/C01009]  GO
In view of the high luminosity phase of the LHC (HL-LHC) to start operation around 2026, a major upgrade of the tracker system for the ATLAS experiment is in preparation. The expected neutron equivalent fluence of up to 2.4×1016 1 MeV neq./cm2 at the innermost layer of the pixel detector poses the most severe challenge. [...]
Published on 2018-01-09. Available in OpenAccess from 2019-01-09.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:610
Detailed record - Similar records
2019-01-10
10:48
Embargoed OpenAccess [PUBDB-2019-00265] Journal Article
et al
The PANDA Endcap Disc DIRC
Positively identifying charged kaons in the PANDA forward endcap solid angle range can be achieved with the Endcap Disc DIRC, allowing kaon-pion separation from 1 up to 4 GeV/c with a separation power of at least 3 standard deviations. Design, performance, and components of this DIRC are given, including the recently introduced TOFPET-ASIC based read-out. [...]
Published on 2018-02-02. Available in OpenAccess from 2019-02-02.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:610
Detailed record - Similar records
2019-01-10
09:21
[PUBDB-2019-00252] Journal Article

Beam test results with ultra thin LumiCal detector planes
International Conference on Calorimetry for the High Energy Frontier, LyonLyon, France, 2 Oct 2017 - 6 Oct 20172017-10-022017-10-06
Contributions / Info
Journal of Instrumentation 13(03), C03013 - C03013 () [10.1088/1748-0221/13/03/C03013]  GO
A new design of a detector module of submillimeter thickness for an electromagnetic calorimeter is presented. It is aimed to be used in the luminometers LumiCal and BeamCal in future linear e+e− collider experiments. [...]
Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
ddc:610
Detailed record - Similar records