Status Report on CERN SC

Allardyce, B.W.; Fiebig, A.; Dallic, G. Le; Madsen, Jes; Standley, P H

doi:10.1109/tns.1979.4329790

Cited by 4 publications

(2 citation statements)

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“…After the system characterization in the radon chamber, in-field measurements in a number of representative locations were carried out with both the RADONLITE and the RADONPIX. The measurements were performed in the basement of the Polytechnic of Milan (POLIMI), Italy; in two house cellars in Thoiry (FRANCE1) and in Saint Genis Pouilly (FRANCE2), located in the French region close to CERN; and in three different locations at CERN: the ion source room of the old -12 - CERN 600 MeV synchro-cyclotron (CERN1) [26], the basement of an office building (CERN2) and in a laboratory equipped with radioactive sources where all CERN radiation detectors are periodically calibrated (CERN3). An Alphaguard monitor and an electret were used in order to compare the RADONLITE and the RADONPIX with commercial radon detectors.…”

Section: In-field Measurementsmentioning

confidence: 99%

Real-time measurements of radon activity with the Timepix-based RADONLITE and RADONPIX detectors

et al. 2014

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Radon gas is the most important source of ionizing radiation among those of natural origin. Two new systems for radon measurement based on the Timepix silicon detector were developed. The positively charged radon daughters are electrostatically collected on the surface of the Si detector and their energy spectrum measured. Pattern recognition of the tracks on the sensor and particle identification are used to determine number and energy of the alpha particles and to subtract the background, allowing for efficient radon detection. The systems include an algorithm for real-time measurement of the radon concentration and the calculation of the effective dose to the lungs.

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Section: In-field Measurementsmentioning

confidence: 99%

Real-time measurements of radon activity with the Timepix-based RADONLITE and RADONPIX detectors

et al. 2014

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“…The SC performance data were retrieved from the many status reports [25][26][27][28][29][30]. Above all, Allardyce et al [28] declared a very low extraction efficiency ranging between 5-7% for the SC1 and one order of magnitude higher (50-70%) for the SC2 after the Improvement Programme.…”

Section: Tablementioning

confidence: 99%

Residual radioactivity at the CERN 600MeV synchro-cyclotron

Carbonez

Torre

Michaud

et al. 2012

Nuclear Instruments and Methods in Physics Research Section A:

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Strong Focusing Synchrotron

Méot

2024

Particle Acceleration and Detection

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This chapter introduces the strong focusing alternating gradient (AG) and separated function synchrotrons. It provides the theoretical material which the simulation exercises lean on. The chapter begins with a brief reminder of the historical context, and continues with beam optics, chromaticity, acceleration, resonances and resonant extraction, dynamical effects of synchrotron radiation (SR), the electromagnetic SR impulse, and depolarizing resonances. This resorts to basic charged particle optics, acceleration, and dynamics in magnetic fields introduced in the previous chapters. The simulation of a strong focusing AG synchrotron requires just two optical elements from library: DIPOLE or MULTIPOL to simulate a combined function dipole, and DRIFT to simulate straight sections. Main dipoles in a separated function synchrotron can use BEND. It requires in addition quadrupoles, simulated using QUADRUPO or MULTIPOL. The latter can simulate higher order lenses, which can otherwise resort to SEXTUPOL, OCTUPOLE, etc. Acceleration uses CAVITE. Accounting for synchrotron radiation (SR) energy loss requires SRLOSS. Monte Carlo SR monitoring can use SRPRNT, which logs data in zgoubi.res. SRPRNT[PRINT] in addition logs data in zgoubi.SRPRNT.Out. Computation of synchrotron radiation (SR) Poynting and spectral brightness uses . Particle monitoring requires keywords introduced in the previous Chapters, including FAISCEAU, FAISTORE, possibly PICKUPS, and some others. Spin motion computation and monitoring resort to SPNTRK, SPNPRT, FAISTORE. Optics matching and optimization use FIT[2]. INCLUDE is used, mostly here in order to simplify the input data files. SYSTEM is used to, mostly, resort to gnuplot so as to end simulations with some specific graphs. Data for the latter are read from output files filled up during the execution of the code, such as zgoubi.fai (resulting from the use of FAISTORE), zgoubi.plt (resulting from IL$$=$$ = 2), or other zgoubi.*.out files resulting from a PRINT command. Stepwise particle data logged in zgoubi.plt are used by the interface zpop to compute the electric field impulse of SR and subsequent spectral angular energy density of the radiation.

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Status Report on CERN SC

Cited by 4 publications

References 1 publication

Real-time measurements of radon activity with the Timepix-based RADONLITE and RADONPIX detectors

Real-time measurements of radon activity with the Timepix-based RADONLITE and RADONPIX detectors

Residual radioactivity at the CERN 600MeV synchro-cyclotron

Strong Focusing Synchrotron

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