Fast-digitizing and track-finding electronics for the vertex detector in the Opal experiment at the Large Electron Positron Collider (LEP) at CERN

1990 ◽  
Vol 37 (5) ◽  
pp. 1584-1588 ◽  
Author(s):  
S. Jaroslawski ◽  
M. Jeffs ◽  
R. Matson ◽  
R. Milborrow ◽  
D. White
Keyword(s):  
Vertex Detector ◽  
Opal Experiment ◽  
Electron Positron ◽  
Large Electron Positron

scholarly journals NMSSM light decoupled Higgs singlet at CEPC

2017 ◽  
Vol 32 (34) ◽  
pp. 1746011 ◽  
Author(s):  
C. T. Potter
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Higgs Bosons ◽  
Electron Positron ◽  
Large Electron Positron

We describe the phenomenology of light singlet Higgs bosons in the Next-to-Minimal Supersymmetry Model (NMSSM) which are mostly decoupled from the rest of Supersymmetry. Noting that the Large Hadron Collider has not excluded this scenario, we describe previous searches for light Higgs bosons at the Large Electron Positron collider and evaluate the sensitivity to neutralino production and decay to light singlet Higgs bosons at the proposed [Formula: see text] GeV Circular Electron Positron Collider.

Recent results from large electron positron collider

Pramana ◽  
1998 ◽  
Vol 51 (1-2) ◽  
pp. 77-86
Author(s):  
S. Banerjee
Keyword(s):  
Electron Positron ◽  
Large Electron Positron

An asynchronous data-driven readout prototype for CEPC vertex detector

2017 ◽  
Vol 32 (34) ◽  
pp. 1746012
Author(s):  
Ping Yang ◽  
Xiangming Sun ◽  
Guangming Huang ◽  
Le Xiao ◽  
Chaosong Gao ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Image Sensor ◽  
Data Driven ◽  
Vertex Detector ◽  
High Position ◽  
Electron Positron ◽  
Pixel Sensors ◽  
The Matrix ◽  
Flavor Tagging ◽  
Silicon Cmos

The Circular Electron Positron Collider (CEPC) is proposed as a Higgs boson and/or Z boson factory for high-precision measurements on the Higgs boson. The precision of secondary vertex impact parameter plays an important role in such measurements which typically rely on flavor-tagging. Thus silicon CMOS Pixel Sensors (CPS) are the most promising technology candidate for a CEPC vertex detector, which can most likely feature a high position resolution, a low power consumption and a fast readout simultaneously. For the R&D of the CEPC vertex detector, we have developed a prototype MIC4 in the Towerjazz 180 nm CMOS Image Sensor (CIS) process. We have proposed and implemented a new architecture of asynchronous zero-suppression data-driven readout inside the matrix combined with a binary front-end inside the pixel. The matrix contains 128 rows and 64 columns with a small pixel pitch of 25 [Formula: see text]m. The readout architecture has implemented the traditional OR-gate chain inside a super pixel combined with a priority arbiter tree between the super pixels, only reading out relevant pixels. The MIC4 architecture will be introduced in more detail in this paper. It will be taped out in May and will be characterized when the chip comes back.

Design and study of the TPC detector module and prototype for CEPC

2019 ◽  
Vol 34 (13n14) ◽  
pp. 1940016 ◽  
Author(s):  
Haiyun Wang ◽  
Huirong Qi
Keyword(s):  
Time Projection Chamber ◽  
Tracking System ◽  
Precision Measurements ◽  
High Luminosity ◽  
Vertex Detector ◽  
Baseline Design ◽  
Detector Module ◽  
Performance Requirements ◽  
Electron Positron ◽  
Time Projection

The Circular Electron Positron Collider (CEPC) has been proposed as a Higgs/[Formula: see text] factory, which would allow precision measurements of the Higgs boson properties, as well as of [Formula: see text] and [Formula: see text] bosons. The baseline design of CEPC tracking system consists of a vertex detector with three concentric double-sided pixel layers, a high precision (about 100 [Formula: see text]m) large volume time projection chamber (TPC) and a silicon tracker on both barrel and end-cap regions. The tracking system has similar performance requirements to the ILD detector in ILC detectors but without power-pulsing, which leads to significantly additional constrains on detector specifications, especially for the case of machine operating at [Formula: see text]-pole energy region with high luminosity. In this paper, we will give an overview of the CEPC TPC detector, the requirements and challenges for the detector with possible technologies. The on-going R&D activities of the TPC detector module and prototype will also be reported.

RECENT RESULTS FROM LEP

1993 ◽  
Vol 08 (08) ◽  
pp. 675-695 ◽  
Author(s):  
GÜNTER QUAST
Keyword(s):  
Standard Model ◽  
Center Of Mass ◽  
Electroweak Interaction ◽  
Electron Positron ◽  
Main Emphasis ◽  
The Standard Model ◽  
Large Electron Positron ◽  
Integrated Luminosity

Recent results from the four experiments ALEPH, DELPHI, L3 and OPAL at the large electron-positron collider, LEP, at CERN are reviewed. Analyzes from an integrated luminosity of about 20 pb −1 per experiment, taken at different center-of-mass energies within ±3 GeV around the Z0 resonance, are available now. Here, the main emphasis is put on the relevance of these measurements for precision tests of the Standard Model of the electroweak interaction.

The Clifford Paterson Lecture, 1982 - The world’s largest accelerator: the electron–positron collider, LEP

1983 ◽  
Vol 388 (1794) ◽  
pp. 1-20
Keyword(s):  
Particle Physics ◽  
Experimental Confirmation ◽  
Grand Unification ◽  
New Techniques ◽  
Member States ◽  
Electron Positron ◽  
The Cost ◽  
Large Electron Positron

Particle physics theory has reached a stage where experimental confirmation of some of the predictions is needed before further progress can be made towards the grand unification of the major forces in nature. This is one of the main aims of the Large Electron–Positron Colliding-Beam Facility (LEP), the construction of which was approved last year by the twelve Member States of CERN. The reasons for the choice of such a facility are explained, and the difficulties of driving a ring tunnel, 27 km in circumference, under the countryside surrounding the present CERN site, are described. The design of the collider and its components is discussed, involving some new techniques to minimize the cost of the facility, which has to be funded out of a constant CERN budget. Finally, some of the methods of carrying out the experiments are explained, and information on the progress to date is given.

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