Depth Profile of Radioactivity Induced in the Thick Concrete Shield in EP1 Beam Line at the KEK 12-GeV Proton Synchrotron Facility

2009 ◽  
Vol 168 (3) ◽  
pp. 694-699 ◽  
Author(s):  
Norikazu Kinoshita ◽  
Hiroshi Matsumura ◽  
Kotaro Bessho ◽  
Akihiro Toyoda ◽  
Kazuyoshi Masumoto ◽  
...  
Keyword(s):  
Depth Profile ◽  
Beam Line ◽  
Proton Synchrotron ◽  
Synchrotron Facility

Single-muon rate reduction for beam dump operation of the K12 beam line at CERN

2019 ◽  
Vol 34 (36) ◽  
pp. 1942026
Author(s):  
M. Rosenthal ◽  
D. Banerjee ◽  
J. Bernhard ◽  
M. Brugger ◽  
N. Charitonidis ◽  
...  
Keyword(s):  
Beam Line ◽  
Proton Synchrotron ◽  
Particle Interactions ◽  
Dark Sector ◽  
Momentum Range ◽  
Super Proton Synchrotron ◽  
Beam Dump ◽  
Beryllium Target ◽  
Single Muon ◽  
Made In

The Physics Beyond Colliders study investigates the feasibility of future projects and experiments using CERN facilities. In the scope of this study, a future operation of the NA62 experiment using the existing K12 beam line operated in beam dump mode is discussed. Such a setup allows for a search for dark sector particles, e.g. heavy neutral leptons, dark photons and axions. Production of these hypothetical particles requires the 400GeV/c proton beam extracted from the Super Proton Synchrotron (SPS) to be dumped on a massive dump collimator located in the first part of the K12 beam line. The decay of these dark sector particles, for example, into muons could be detected by the NA62 experimental setup. However, muons created in particle interactions with material and from in-flight decays of secondary hadrons pose a critical background for this kind of experiment. Magnetic sweeping serves as an efficient tool for reducing this background. This paper discusses the simulation studies conducted with the software framework G4beamline to reduce the expected single-muon rate for this experiment. The required beam line modifications, in particular the removal of the beryllium target and repositioning of the dump, have been implemented into this model. A comparison of simulated muon distributions and spectra available experimental data, already taken in test runs, has been made in order to validate the beam line simulation. Finally, additional beam line modifications to further suppress the muon background are elaborated upon. These studies show a potential further reduction of a factor four of the total single-muon rate relative to the nominal setup over the full momentum range, and up to a factor twenty considering only muons with momenta [Formula: see text].

STRANGENESS NUCLEAR PHYSICS AND J-PARC

2009 ◽  
Vol 18 (05n06) ◽  
pp. 1206-1214
Author(s):  
TOMOFUMI NAGAE
Keyword(s):  
Nuclear Physics ◽  
Beam Line ◽  
Proton Accelerator ◽  
Proton Synchrotron ◽  
Japan Atomic Energy Agency ◽  
Energy Agency ◽  
Experimental Hall ◽  
Upstream Part ◽  
Beam Commissioning ◽  
Proton Injector

Construction of the Japan Proton Accelerator Research Complex (J-PARC), which is almost at the final stage, has been in progress under a cooperation of two institutions, KEK and Japan Atomic Energy Agency (JAEA). The beam commissioning of the proton injector was started in the fall of 2006, and the beam was accelerated up to the design energy of 181 MeV in January, 2007. The beam was further transfered to the next proton synchrotron, and was successfully accelerated to 3 GeV at the end of October, 2007. Construction of the hadron experimental hall is completed in June, 2007, and the beam line equipment is going to be installed from the upstream part. Various experiments on strangeness nuclear physics are planned in the hadron experimental hall. Here, I introduce some of the interesting experimental programs.

scholarly journals PANDA Muon System Prototype

2018 ◽  
Vol 177 ◽  
pp. 04001
Author(s):  
Victor Abazov ◽  
Gennady Alexeev ◽  
Maxim Alexeev ◽  
Vladimir Frolov ◽  
Georgy Golovanov ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Beam Line ◽  
Proton Synchrotron ◽  
Test Beam ◽  
Hadron Spectroscopy ◽  
Preliminary Results ◽  
Muon System ◽  
Strong Forces ◽  
Under Construction ◽  
System Prototype

The PANDA Experiment will be one of the key experiments at the Facility for Antiproton and Ion Research (FAIR) which is under construction now in the territory of the GSI Helmholtz Centre for Heavy Ion Research in Darmstadt, Germany. PANDA is aimed to study hadron spectroscopy and various topics of the weak and strong forces. Muon System is chosen as the most suitable technology for detecting the muons. The Prototype of the PANDA Muon System is installed on the test beam line T9 at the Proton Synchrotron (PS) at CERN. Status of the PANDA Muon System prototype is presented with few preliminary results.

A DOUBLE CRYSTAL MONOCHROMATOR FOR SOFT X-RAY BEAM LINE OF UVSOR

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-135-C8-137
Author(s):  
T. MURATA ◽  
T. MATSUKAWA ◽  
M. MORI ◽  
M. OBASHI ◽  
S.-I. NAO-E ◽  
...  
Keyword(s):  
Beam Line ◽  
Double Crystal ◽  
X Ray ◽  
Double Crystal Monochromator

Mechanisms of Dopant Depth Profile Modification During Mass Spectrometric Analysis of Multilayer Structure

2015 ◽  
Vol 60 (6) ◽  
pp. 511-520 ◽  
Author(s):  
A.A. Efremov ◽  
◽  
V.G. Litovchenko ◽  
V.P. Melnik ◽  
O.S. Oberemok ◽  
...  
Keyword(s):  
Depth Profile ◽  
Multilayer Structure ◽  
Mass Spectrometric ◽  
Mass Spectrometric Analysis ◽  
Spectrometric Analysis ◽  
Profile Modification

The effect of surface roughness on AES depth profile.

Shinku ◽  
1987 ◽  
Vol 30 (10) ◽  
pp. 793-798 ◽  
Author(s):  
Masao HIRASAKA ◽  
Masao HASHIBA ◽  
Toshiroh YAMASHINA
Keyword(s):  
Surface Roughness ◽  
Depth Profile ◽  
Effect Of Surface
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