CERN Accelerating science

PH-EP Technical Notes

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2015-04-17
13:04
Studies of IBL wire bonds operation in a ATLAS-like magnetic field. / Alvarez Feito, D (CERN PH-DT) ; Honma, A (CERN PH-DT) ; Mandelli, B (CERN PH-DT and University of Oslo)
At the Large Hadron Collider (LHC) experiments, most of silicon detectors use wire bonds to connect front-end chips and sensors to circuit boards for the data and service trans- missions. These wire bonds are operated in strong magnetic field environments and if time varying currents pass through them with frequencies close to their mechanical resonance frequency, strong resonant oscillations may occur. [...]
PH-EP-Tech-Note-2015-002.- Geneva : CERN, 2015 - 12 p. Fulltext: PDF;

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2015-03-19
16:44
Review of input stages used in front end electronics for particle detectors / Kaplon, J (CERN) ; Kulis, S (CERN)
In this paper we present noise analysis of the input stages most commonly used in front end electronics for particle detectors. Analysis shows the calculation of the input referenced noise related to the active devices. [...]
PH-EP-Tech-Note-2015-001.- Geneva : CERN, 2015 - 18 p. Fulltext: PDF;

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2014-04-30
14:14
IBL Thermal Mockup Bake-Out Tests / Nuiry, FX (CERN PH-DT) ; Feigl, S (CERN, PH-DT)
This note summarizes different bake-out tests that have been performed with the ATLAS Insertable B-Layer (IBL) mockup. Two beam pipe configurations have been tested: one with the aerogel insulation layer all along the pipe and one without insulation over 622 mm around Z0. [...]
PH-EP-Tech-Note-2014-001.- Geneva : CERN, 2014 - 27 p. Fulltext: PDF;

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2013-05-03
17:59
SCIENTIFIC PROGRESS OF THE MC-PAD NETWORK / Aguilar, J (AGH Cracow) ; Ahmed, M I (AGH-UST Cracow) ; Ambalathankandy, P (AGH Cracow) ; Apostolakis, J (CERN) ; Arora, R (GSI) ; Balog, T (GSI) ; Behnke, T (DESY Hamburg) ; Beltrame, P (CERN) ; Bencivenni, G (INFN LNF) ; Caiazza, S (DESY Hamburg) et al. /MC-PAD
MC-PAD is a multi-site Initial Training Network on particle detectors in physics experiments. It comprises nine academic participants, three industrial partners and two associated academic partners [...]
PH-EP-Tech-Note-2013-004.- Geneva : CERN, 2013 - 105 p. Fulltext: PDF;

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2013-03-19
16:05
Study of a Digital SiPM for TOF-PET / Heller, M (CERN)
The digital Silicon Photomultipliers (dSiPM) from Philips have been used in a study aiming at the proof of principle of an axial positron emission tomography detector with time of flight capabilities. These novel detectors provide various features not present in analog devices. [...]
PH-EP-Tech-Note-2013-003.- Geneva : CERN, 2013 - 12 p. Fulltext: PDF;

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2013-01-31
11:31
Generation current temperature scaling / Chilingarov, A (Lancaster University, UK) /RD50
The document consists of two RD50 Technical Notes devoted to the temperature scaling of the current generated in Si bulk. The first one (of 9.5.2011) describes the basics of the phenomenon following from the semiconductor physics and recommends the I(T) parameterisation. [...]
PH-EP-Tech-Note-2013-001.- Geneva : CERN, 2013 - 22 p. Fulltext: PH-EP-Tech-Note-2013-001 - PDF; PH-EP-Tech-Note-2013-001_2 - PDF; PH-EP-Tech-Note-2013-001_3 - PDF;

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2012-06-25
10:09
Wavelength-shifting materials for the use in RICH detectors - p-terphenyl and tetraphenyl-butadiene revisited / Koczon, P (GSI Darmstadt (D)) ; Braem, A (CERN (CH)) ; Joram, C (CERN (CH)) ; Solevi, P (ETH Zurich (CH)) ; D¨urr, M (Hochschule Esslingen (D)) ; H¨ohne, C (GSI Darmstadt (D))
P-terphenyl (PT) and tetraphenyl-butadiene (TPB) in form of thin films have been investigated as possible wavelength shifting material for application in Ring Imaging Cherenkov (RICH) detectors. Films of dierent thickness were evaporated onto borosilicate windows of photomultiplier tubes (PMT) and the quantum eciency of the modified PMTs was determined as a function of wavelength. [...]
PH-EP-Tech-Note-2012-003.- Geneva : CERN, 2010 - 5 p. Fulltext: PDF;

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2012-04-30
15:17
Systematic study of RPC performances in polluted or varying gas mixtures compositions: an online monitor system for the RPC gas mixture at LHC / Capeans, M (CERN) ; Guida, R (CERN) ; Mandelli, B (CERN)
The importance of the correct gas mixture for the Resistive Plate Chamber (RPC) detector systems is fundamental for their correct and safe operation. A small change in the percentages of the gas mixture components can alter the RPC performance and this will rebound on the data quality in the ALICE, ATLAS and CMS experiments at CERN. [...]
PH-EP-Tech-Note-2012-002.- Geneva : CERN, 2012 - 14 p. Fulltext: PDF;

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2012-01-13
12:57
Long-term study of optimal gas purifiers for the RPC systems at LHC / Altuntas, E (CERN) ; Capeans, M (CERN) ; Glushkov, I (CERN) ; Guida, R (CERN) ; Hahn, F (CERN) ; Haider, S (CERN) ; Mandelli, B (CERN) ; Rouwette, S (CERN)
This study investigates the impurities produced in the gas of heavily irradiated RPC chambers and the properties of possible purifiers for the closed-loop gas systems used in the LHC experiments. The goal is finding the operational conditions that will keep the RPC gas purity near the level of the fresh gas quality to ensure proper operation of the large RPC systems at high luminosity. [...]
PH-EP-Tech-Note-2012-001.- Geneva : CERN, 2012 - 26 p. Fulltext: PH-EP-Tech-Note-2012-001_2 - PDF; PH-EP-Tech-Note-2012-001 - PDF;

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2011-12-20
12:44
Reliability Tests of Aluminium Wedge Wire Bonding on Auto-catalytic Silver Immersion Gold (ASIG) PCB Metallization / Drozd, A (CERN) ; Honma, A (CERN) ; Kaufmann, S (CERN) ; Manolescu, F (CERN) ; McGill, I (CERN)
The Auto-catalytic Silver Immersion Gold (ASIG) PCB metallization is a new process that has clear advantages for PCB assembly especially with regard to lead-free soldering. As it may become a popular process in the future for electronics used in physics experiments, the quality of this metallization for aluminium wire bonding has been studied. [...]
PH-EP-Tech-Note-2011-002.- Geneva : CERN, 2011 - 13 p. Fulltext: PDF;

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