M. Guthoff
A5107964847- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Radiation Effects in Electronics
- Diamond and Carbon-based Materials Research
- Radiation Therapy and Dosimetry
- Distributed and Parallel Computing Systems
- Atomic and Subatomic Physics Research
- Nuclear reactor physics and engineering
- Gamma-ray bursts and supernovae
- CCD and CMOS Imaging Sensors
- Nuclear Physics and Applications
- Advanced X-ray and CT Imaging
- International Science and Diplomacy
- Optical properties and cooling technologies in crystalline materials
Deutsches Elektronen-Synchrotron DESY
2017-2025
A. Alikhanyan National Laboratory
2022-2024
University of Antwerp
2024
Universität Hamburg
2023-2024
University of Maryland, College Park
2023-2024
Institute of High Energy Physics
2015-2024
European Organization for Nuclear Research
2012-2023
Max Planck Institute for Nuclear Physics
2012-2022
University of New Mexico
2019
University of Florence
2018
Beam test results of the radiation tolerance study chemical vapour deposition (CVD) diamond against different particle species and energies is presented. We also present beam on independence signal size incident rate in charged detectors based un-irradiated irradiated poly-crystalline CVD over a range fluxes from 2 kHz/cm2 to 10 MHz/cm2. The pulse height sensors was measured with readout electronics peaking time 6 ns. In addition functionality 3D devices demonstrated tests are shown be...
Abstract The high-luminosity upgrade of the LHC brings unprecedented requirements for real-time and precision bunch-by-bunch online luminosity measurement beam-induced background monitoring. A key component CMS Beam Radiation, Instrumentation Luminosity system is a stand-alone luminometer, Fast Condition Monitor (FBCM), which fully independent from central trigger data acquisition services able to operate at all times with triggerless readout. FBCM utilizes dedicated front-end...
Diamond is more and used as detector material for particle detection. One argument diamond its higher radiation hardness compared to silicon. Since various particles have different potential damage at energies a scaling rule necessary the prediction of damage. For silicon detectors non-ionising energy loss (NIEL) effects particles. A way predicting based on Norget-Robinson-Torrens theorem predict number displacements per atom (DPA). This provides better since recombination are taken into...
The Pixel Luminosity Telescope is a silicon pixel detector dedicated to luminosity measurement at the CMS experiment LHC. It located approximately 1.75 m from interaction point and arranged into 16 "telescopes", with eight telescopes installed around beam pipe either end of each telescope composed three individual sensor planes. per-bunch instantaneous measured by counting events where all planes in register hit, using special readout full LHC bunch-crossing rate 40 MHz. information read out...
The beam condition monitoring leakage (BCML) system is a device in the compact muon solenoid (CMS) experiment at large hadron collider (LHC). As detectors 32 poly-crystalline (pCVD) diamond sensors are positioned rings around pipe. Here, high particle rates occur from colliding beams scattering particles outside These cause defects, which act as traps for ionization, thus reducing charge collection efficiency (CCE). However, loss CCE was much more severe than expected low rate laboratory...
Future detector systems have increasing demands on the performance of their mechanical support structures and cooling systems. Novel materials techniques are developed continuously improved in order to fulfil these requirements. A custom thermal conductivity measurement setup is presented measure conductivity. The consists two heat flux meter blocks between which samples clamped. follows American Society for Testing Materials standard D5470-06 brass blocks, act as flow meters. In minimize...
In the Beam Condition Monitor at CMS experiment LHC, CVD diamonds are used as detectors. During Run 1 operation of significant reduction signal efficiency due to radiation damage was observed. The decrease significantly stronger than expected. so-called polarization effect is responsible for this reduction. Electric field deformations trapped charge carriers shown in measurements using transient current technique and compared with simulations.
The CMS beam and radiation monitoring subsystem BCM1F during LHC Run I consisted of 8 individual diamond sensors situated around the pipe within tracker detector volume, for purpose fast background collision products. Effort is ongoing to develop use as an online bunch-by-bunch luminosity monitor. will be running whenever there in LHC, its data acquisition independent from detector, hence it delivers even when not taking data. To prepare expected increase change 50 ns 25 bunch separation,...
The Beam Conditions and Radiation Monitoring System (BRM), is installed in CMS to protect the detector from high beam losses provide feedback LHC on conditions. primary subsystems are based either single crystal diamond sensors (BCM1F) for particle counting with nanosecond resolution or polycrystalline diamonds (BCM2; BCM1L) integrated signal current measurements. scintillation counters (BSC) also used during low luminosity running. detectors have radiation hard front-end electronics read...
The Beam Condition Monitoring Leakage (BCML) system is a beam monitoring device in the CMS experiment at LHC consisting of 32 poly‐crystalline (pCVD) diamond sensors. BCML sensors, located rings around beam, are exposed to high particle rates originating from colliding beams. These particles cause lattice defects, which act as traps for ionized charge carrier leading reduced collection efficiency (CCE). radiation induced CCE degradation was, however, much more severe than expected low rate...
The Compact Muon Solenoid (CMS) is one of the two large, general purpose experiments situated at LHC CERN. As with all high energy physics experiments, knowledge beam conditions and luminosity vital importance. Beam Conditions Radiation Monitoring System (BRM) installed in CMS to protect detector provide feedback on conditions. It composed several sub-systems that measure radiation level close or inside sub-detectors, monitor halo different time resolution, support tuning case adverse by...
The CMS Preshower is part of the Electromagnetic Calorimeter (ECAL) system.It a sampling calorimeter that was installed to improve π 0 rejection in forward direction.It composed two layers lead, each followed by layer silicon sensors.The at end CMS, about ±310 cm from interaction point.The sensors are exposed wide spectrum ionizing and non-ionizing radiation, causing an increase bulk leakage current change effective doping concentration, resulting full depletion voltage.This paper presents...
The Beam Radiation Instrumentation and Luminosity Project of the CMS experiment, consists several beam monitoring systems. One system, upgraded Fast Beams Condition Monitor, is based on 24 single crystal CVD diamonds with a double-pad sensor metallization custom designed readout. Signals for real-time are transmitted to counting room, where they received processed by new back-end electronics extract information LHC collision, induced background activation products. Slow Control Driver...
The high-luminosity upgrade of the LHC brings unprecedented requirements for real-time and precision bunch-by-bunch online luminosity measurement beam-induced background monitoring. A key component CMS Beam Radiation, Instrumentation Luminosity system is a stand-alone luminometer, Fast Condition Monitor (FBCM), which fully independent from central trigger data acquisition services able to operate at all times with triggerless readout. FBCM utilizes dedicated front-end application-specific...
The high-luminosity upgrade of the LHC (HL-LHC) brings unprecedented requirements for precision bunch-by-bunch luminosity measurement and beam-induced background monitoring in real time. A key component CMS Beam Radiation Instrumentation Luminosity detector system is a stand-alone luminometer, Fast Condition Monitor (FBCM), which able to operate independently at all times with triggerless asynchronous readout. FBCM utilizes dedicated front-end ASIC amplify signals from CO$_2$-cooled...
The planned upgrade of the LHC to High-Luminosity-LHC will push luminosity limits above original design values. Since current detectors not be able cope with this environment ATLAS and CMS are doing research find more radiation tolerant technologies for their innermost tracking layers. Chemical Vapour Deposition (CVD) diamond is an excellent candidate purpose. Detectors out material already established in highest irradiation regimes beam condition monitors at LHC. RD42 collaboration leading...