IPAC2012 - List of Keywords (hadron)

Paper	Title	Other Keywords	Page
MOPPC038	Bethe-Heitler Muon Background at a Muon Collider	collider, background, electron, simulation	214
	S.A. Kahn, M.A.C. Cummings, T.J. Roberts Muons, Inc, Batavia, USA D. Hedin, A.O. Morris Northern Illinois University, DeKalb, Illinois, USA J.F. Kozminski Lewis University, Romeoville, Illinois, USA
	Multi-TeV muon colliders are an important option for a future energy frontier lepton collider since synchrotron radiation in a circular machine is significantly less than that in an electron collider. For a muon collider with 750 GeV μ+μ− with 2×10¹² μ per bunch we would expect 8.6×10⁵ muon decays per meter for the two beams. Muon decays are the source of beam induced backgrounds that can affect the physics. These backgrounds include electrons from muon decays, synchrotron radiation from the decay electrons, hadrons produced by photo-nuclear interactions, coherent and incoherent beam-beam pair production and Bethe-Heitler muon production. This paper will describe a simulation of the B-H muon pair production in a muon collider. These muons can penetrate the collider ring magnets and shielding and possibly enter into the detector regions. The simulation tracks B-H muons produced from electromagnetic shower interactions in collider ring material in the range of ±200 m from the interaction point.

TUXA01	Status of the J-PARC Facility	linac, neutron, extraction, synchrotron	1005
	S. Nagamiya JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
	This presentation should provide a summary of the status and eventual re-commissioning of the J-PARC facility following the 2011 earth quake and tsunami.
	Slides TUXA01 [33.003 MB]

TUYA02	Overview of Asymmetric Electron Hadron Colliders	electron, collider, ion, proton	1025
	V. Ptitsyn BNL, Upton, Long Island, New York, USA
	The first lepton-proton collider HERA at DESY completed its operation in 2007. Presently, several accelerator proposals for future electron-hadron colliders are under consideration in several laboratories from all over the world. The future accelerators intend to exceed the HERA luminosity by 2-3 orders of magnitude, as well as to cover the different ranges of center-of-mass collision energies. The research capabilities will be extended by including the collisions of electrons with heavy ions, as well as, in some designs, with polarized protons and polarized ions. The future electron-hadron colliders would serve as high-resolution microscopes able to reveal unprecedented details of the structure of nucleons and ions, including their spin content and the state of high gluon density matter. The colliders will provide us with ultimate tools to test both the ways Quantum Chromodynamics works as well as to look for new physics beyond the Standard Model. All proposed electron-hadron colliders are based on the extension of existing accelerators to accommodate the electron-hadron collisions. Advanced accelerator technologies are utilized in order to achieve the desired high luminosity.
	Slides TUYA02 [6.002 MB]

TUPPC078	Proposal of an Inverse Logarithm Scaling Law for the Luminosity Evolution	luminosity, collider, emittance, dynamic-aperture	1353
	M. Giovannozzi CERN, Geneva, Switzerland C.H. Yu IHEP, Beijing, People's Republic of China
	A scaling law for the time-dependence of the dynamic aperture, i.e., the region of phase space where stable motion occurs, was proposed in previous papers, about ten years ago. It was showed that dynamic aperture has a logarithmic dependence on time, which would be suggested by some fundamental theorems of the theory of dynamical systems. Such a scaling law was recently extended also to the intensity evolution in a storage ring. In this paper, inspired by these results, and inverse logarithm scaling law for the luminosity in a circular collider is proposed. The law is then tested against the data from the LHC physics runs and also with some examples from other machines. The results are presented and discussed in details.

TUPPR098	Comparison of LHC Collimator Beam-Based Alignment Centers to BPM-Interpolated Centers	alignment, injection, collimation, collider	2062
	G. Valentino, N.J. Sammut University of Malta, Information and Communication Technology, Msida, Malta R.W. Assmann, R. Bruce, G.J. Müller, S. Redaelli, A. Rossi, G. Valentino CERN, Geneva, Switzerland L. Lari IFIC, Valencia, Spain
	The beam centers at the Large Hadron Collider collimators are determined by beam-based alignment, where both jaws of a collimator are moved in separately until a loss spike is detected on a Beam Loss Monitor downstream. Orbit drifts of more than a few hundred micrometers cannot be tolerated, as they would reduce the efficiency of the collimation system. Beam Position Monitors (BPMs) are installed at various locations around the LHC ring, and a linear interpolation of the orbit can be obtained at the collimator positions. In this paper, the results obtained from beam-based alignment are compared with the orbit interpolated from the BPM data throughout the 2011 LHC proton run. The stability of the orbit determined by collimator alignment during the run is evaluated.

WEIC06	Accelerator R&D: Research for Science - Science for Society	laser, acceleration, proton, emittance	2161
	N.R. Holtkamp SLAC, Menlo Park, California, USA S. Biedron, S.V. Milton CSU, Fort Collins, Colorado, USA L. Boeh, J.E. Clayton, G. Zdasiuk VMS GTC, Palo Alto, California, USA S.A. Gourlay, M.S. Zisman LBNL, Berkeley, California, USA R.W. Hamm R&M Technical Enterprises, Pleasanton, California, USA S. Henderson Fermilab, Batavia, USA G.H. Hoffstaetter CLASSE, Ithaca, New York, USA L. Merminga TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada S. Ozaki BNL, Upton, Long Island, New York, USA F.C. Pilat JLAB, Newport News, Virginia, USA M. White ANL, Argonne, USA
	In September 2011 the US Senate Appropriations Committee requested a ten-year strategic plan from the Department of Energy (DOE) that would describe how accelerator R&D today could advance applications directly relevant to society. Based on the 2009 workshop "Accelerators for America’s Future" an assessment was made on how accelerator technology developed by the nation’s laboratories and universities could directly translate into a competitive strength for industrial partners and a variety of government agencies in the research, defense and national security sectors. The Office of High Energy Physics, traditionally the steward for advanced accelerator R&D within DOE, commissioned a task force under its auspices to generate and compile ideas on how best to implement strategies that would help fulfill the needs of industry and other agencies, while maintaining focus on its core mission of fundamental science investigation.
	Slides WEIC06 [3.678 MB]

WEPPC109	Superconducting RF Systems for eRHIC	SRF, linac, electron, cavity	2474
	S.A. Belomestnykh, I. Ben-Zvi, J.C. Brutus, H. Hahn, D. Kayran, G.J. Mahler, G.T. McIntyre, C. Pai, I. Pinayev, V. Ptitsyn, J. Skaritka, R. Than, J.E. Tuozzolo, Q. Wu, W. Xu, A. Zaltsman BNL, Upton, Long Island, New York, USA S.A. Belomestnykh, V. Litvinenko, T. Xin Stony Brook University, Stony Brook, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Future electron-hadron collider eRHIC will consist of a six-pass 30-GeV electron ERL and one of RHIC storage rings operating with energy up to 250 GeV. The collider design extensively utilizes superconducting RF (SRF) technology in both electron and hadron parts. This paper describes various SRF systems, their requirements and parameters.

WEPPR099	Shielding of a Hadron in a Finite e-Beam	plasma, electron, shielding, linac	3171
	A. Elizarov, V. Litvinenko, G. Wang BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. The thorough study of coherent electron cooling, the modern cooling technique capable to deal with accelerators operating in the range of few TeVs, rises many interesting questions. One of them is a shielding dynamics of a hadron in an electron beam. Now this effect is computed analytically in an infinite beam approximation. Many effects are drastically different in finite and infinite plasmas. Here we propose a method to compute the dynamical shielding effect in a finite cylindrical plasma - the realistic model of an electron beam in accelerators. V. N. Litvinenko, Y. S. Derbenev, Phys. Rev. Lett. 10², 114801 (2009). ** G. Wang, M. Blaskiewicz, Phys. Rev. E 78, 026413 (2008).

THPPD028	Studies on the LHC Superconducting Circuits and Routine Qualification of Their Functionalities	dipole, cryogenics, collider, target	3563
	M. Pojer, G. D'Angelo, R. Mompo, R. Schmidt, M. Solfaroli Camillocci CERN, Geneva, Switzerland
	The Large Hadron Collider (LHC) is systematically undergoing periods of maintenance stop (either 4-5 days stops or longer Christmas breaks), after which some of the superconducting circuits (or the totality of them) have to be re-commissioned to check the correct functionality of all powering and protection systems. Detailed procedures have been developed during the past few years and they have been optimized to increase powering tests efficiency, thus reducing beam downtime. The approach to the routine qualification of the LHC powering systems is described in this paper. During 2011 technical stops, some particular studies on the superconducting circuits were performed, to assess the quality of the superconducting splices of individually powered magnets and to study the quench propagation in the main magnet bus-bars. The methodology of these tests and some results are also presented.

THPPD029	Machine Availability at the Large Hadron Collider	luminosity, cryogenics, controls, collider	3566
	M. Pojer, R. Schmidt, M. Solfaroli Camillocci, S. Wagner CERN, Geneva, Switzerland
	One of the most important parameters for a particle accelerator is its uptime, the period of time when it is functioning and available for use. In its second year of operation, the Large Hadron Collider (LHC) has experienced very high machine availability, which is one of the ingredients of its brilliant performance. Some of the strategies followed to increase MTBF are described in the paper. The approach of periodic maintenance stops, often questioned, is also discussed. Some considerations on the ideal length of a physics fill are also drawn.

THPPP006	Radiation Damage to Electronics at the LHC	radiation, shielding, proton, luminosity	3734
	M. Brugger CERN, Geneva, Switzerland
	Control systems installed in LHC underground areas using COTS (Commercial Off The Shelf) components are all affected by the risk of ‘Single Event Effects.’ In the LHC tunnel, in addition, cumulative dose effects have also to be considered. While for the tunnel equipment certain radiation tolerant design criteria were already taken into account during the LHC construction phase, most of the equipment placed in adjacent and partly shielded areas was not conceived nor tested for their current radiation environment. Given the large amount of electronics being installed in these areas, a CERN wide project called R2E (Radiation To Electronics) has been initiated to quantify the risk of radiation-induced failures and to mitigate the risk for nominal beams and beyond to below one failure a week. This paper summarizes the analysis and mitigation approach chosen for the LHC, presents the encountered difficulties and the obtained experience in the following aspects: radiation fields & related calculations, monitoring and benchmarking; commercial equipment/systems and their use in the LHC radiation fields; radiation tests with dedicated test areas and facilities. Work presented on behalf of the CERN ’Radiation to Electronics (R2E) Mitigation Project’ and the ‘Radiation Working Group (RadWG)’

THPPP009	Automated Execution and Tracking of the LHC Commissioning Tests	status, controls, LabView, collider	3743
	K. Fuchsberger, V. Baggiolini, M. Galetzka, R. Gorbonosov, M. Pojer, M. Solfaroli Camillocci, M. Zerlauth CERN, Geneva, Switzerland
	To ensure the correct operation and prevent system failures, which can lead to equipment damage in the worst case, all critical systems in the Large Hadron Collider (LHC), have to be tested thoroughly during dedicated commissioning phases after each intervention. In view of the around 7,000 individual tests to be performed each year after a Christmas stop, a lot of effort was already put into the automation of these tests at the beginning of LHC hardware commissioning in 2005, to assure the dependable execution and analysis of these tests. To further increase the productivity during the commissioning campaigns and to enforce amore consistent workflow, the development of a dedicated testing framework was launched. This new framework is designed to schedule and track the automated tests for all systems of the LHC and will also be extendable, e.g., to beam commissioning tests. This is achieved by re-using different, already existing execution frameworks. In this paper, we outline the motivation for this new framework and the related improvements in the commissioning process. Further, we sketch its design and present first experience from the re-commissioning campaign in early 2012.

THPPR074	Simulations of Pion Production in the DAEδALUS Target	proton, target, simulation, neutron	4148
	A. Bungau, R.J. Barlow University of Huddersfield, Huddersfield, United Kingdom J.M. Conrad, T. Smidt, J. Spitz MIT, Cambridge, Massachusetts, USA M. Shaevitz Columbia University, New York, USA
	DAEδALUS, the Decay At-rest Experiment for δCP At the Laboratory for Underground Science will look for evidence of CP-violation in the neutrino sector, which may explain the matter/antimatter asymmetry in our universe. It will make precision measurements of oscillations of anti-muon neutrinos to anti-electron neutrinos using multiple neutrino sources created by low-cost compact cyclotrons. DAEδALUS will utilize a decay-at-rest neutrino beam produced by 800 MeV protons impacting a graphite target. Two well established Monte Carlo codes, MARS and GEANT4, have been used to optimize the design and the performance of the target. A benchmarking of the results obtained with these codes is also presented in this paper.

Paper

Title

Other Keywords

Page

MOPPC038

Bethe-Heitler Muon Background at a Muon Collider

collider, background, electron, simulation

214

S.A. Kahn, M.A.C. Cummings, T.J. Roberts
Muons, Inc, Batavia, USA
D. Hedin, A.O. Morris
Northern Illinois University, DeKalb, Illinois, USA
J.F. Kozminski
Lewis University, Romeoville, Illinois, USA

Multi-TeV muon colliders are an important option for a future energy frontier lepton collider since synchrotron radiation in a circular machine is significantly less than that in an electron collider. For a muon collider with 750 GeV μ+μ− with 2×10¹² μ per bunch we would expect 8.6×10⁵ muon decays per meter for the two beams. Muon decays are the source of beam induced backgrounds that can affect the physics. These backgrounds include electrons from muon decays, synchrotron radiation from the decay electrons, hadrons produced by photo-nuclear interactions, coherent and incoherent beam-beam pair production and Bethe-Heitler muon production. This paper will describe a simulation of the B-H muon pair production in a muon collider. These muons can penetrate the collider ring magnets and shielding and possibly enter into the detector regions. The simulation tracks B-H muons produced from electromagnetic shower interactions in collider ring material in the range of ±200 m from the interaction point.

TUXA01

Status of the J-PARC Facility

linac, neutron, extraction, synchrotron

1005

S. Nagamiya
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan

This presentation should provide a summary of the status and eventual re-commissioning of the J-PARC facility following the 2011 earth quake and tsunami.

Slides TUXA01 [33.003 MB]

TUYA02

Overview of Asymmetric Electron Hadron Colliders

electron, collider, ion, proton

1025

V. Ptitsyn
BNL, Upton, Long Island, New York, USA

The first lepton-proton collider HERA at DESY completed its operation in 2007. Presently, several accelerator proposals for future electron-hadron colliders are under consideration in several laboratories from all over the world. The future accelerators intend to exceed the HERA luminosity by 2-3 orders of magnitude, as well as to cover the different ranges of center-of-mass collision energies. The research capabilities will be extended by including the collisions of electrons with heavy ions, as well as, in some designs, with polarized protons and polarized ions. The future electron-hadron colliders would serve as high-resolution microscopes able to reveal unprecedented details of the structure of nucleons and ions, including their spin content and the state of high gluon density matter. The colliders will provide us with ultimate tools to test both the ways Quantum Chromodynamics works as well as to look for new physics beyond the Standard Model. All proposed electron-hadron colliders are based on the extension of existing accelerators to accommodate the electron-hadron collisions. Advanced accelerator technologies are utilized in order to achieve the desired high luminosity.

Slides TUYA02 [6.002 MB]

TUPPC078

Proposal of an Inverse Logarithm Scaling Law for the Luminosity Evolution

luminosity, collider, emittance, dynamic-aperture

1353

M. Giovannozzi
CERN, Geneva, Switzerland
C.H. Yu
IHEP, Beijing, People's Republic of China

A scaling law for the time-dependence of the dynamic aperture, i.e., the region of phase space where stable motion occurs, was proposed in previous papers, about ten years ago. It was showed that dynamic aperture has a logarithmic dependence on time, which would be suggested by some fundamental theorems of the theory of dynamical systems. Such a scaling law was recently extended also to the intensity evolution in a storage ring. In this paper, inspired by these results, and inverse logarithm scaling law for the luminosity in a circular collider is proposed. The law is then tested against the data from the LHC physics runs and also with some examples from other machines. The results are presented and discussed in details.

TUPPR098

Comparison of LHC Collimator Beam-Based Alignment Centers to BPM-Interpolated Centers

alignment, injection, collimation, collider

2062

G. Valentino, N.J. Sammut
University of Malta, Information and Communication Technology, Msida, Malta
R.W. Assmann, R. Bruce, G.J. Müller, S. Redaelli, A. Rossi, G. Valentino
CERN, Geneva, Switzerland
L. Lari
IFIC, Valencia, Spain

The beam centers at the Large Hadron Collider collimators are determined by beam-based alignment, where both jaws of a collimator are moved in separately until a loss spike is detected on a Beam Loss Monitor downstream. Orbit drifts of more than a few hundred micrometers cannot be tolerated, as they would reduce the efficiency of the collimation system. Beam Position Monitors (BPMs) are installed at various locations around the LHC ring, and a linear interpolation of the orbit can be obtained at the collimator positions. In this paper, the results obtained from beam-based alignment are compared with the orbit interpolated from the BPM data throughout the 2011 LHC proton run. The stability of the orbit determined by collimator alignment during the run is evaluated.

WEIC06

Accelerator R&D: Research for Science - Science for Society

laser, acceleration, proton, emittance

2161

N.R. Holtkamp
SLAC, Menlo Park, California, USA
S. Biedron, S.V. Milton
CSU, Fort Collins, Colorado, USA
L. Boeh, J.E. Clayton, G. Zdasiuk
VMS GTC, Palo Alto, California, USA
S.A. Gourlay, M.S. Zisman
LBNL, Berkeley, California, USA
R.W. Hamm
R&M Technical Enterprises, Pleasanton, California, USA
S. Henderson
Fermilab, Batavia, USA
G.H. Hoffstaetter
CLASSE, Ithaca, New York, USA
L. Merminga
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
S. Ozaki
BNL, Upton, Long Island, New York, USA
F.C. Pilat
JLAB, Newport News, Virginia, USA
M. White
ANL, Argonne, USA

In September 2011 the US Senate Appropriations Committee requested a ten-year strategic plan from the Department of Energy (DOE) that would describe how accelerator R&D today could advance applications directly relevant to society. Based on the 2009 workshop "Accelerators for America’s Future" an assessment was made on how accelerator technology developed by the nation’s laboratories and universities could directly translate into a competitive strength for industrial partners and a variety of government agencies in the research, defense and national security sectors. The Office of High Energy Physics, traditionally the steward for advanced accelerator R&D within DOE, commissioned a task force under its auspices to generate and compile ideas on how best to implement strategies that would help fulfill the needs of industry and other agencies, while maintaining focus on its core mission of fundamental science investigation.

Slides WEIC06 [3.678 MB]

WEPPC109

Superconducting RF Systems for eRHIC

SRF, linac, electron, cavity

2474

S.A. Belomestnykh, I. Ben-Zvi, J.C. Brutus, H. Hahn, D. Kayran, G.J. Mahler, G.T. McIntyre, C. Pai, I. Pinayev, V. Ptitsyn, J. Skaritka, R. Than, J.E. Tuozzolo, Q. Wu, W. Xu, A. Zaltsman
BNL, Upton, Long Island, New York, USA
S.A. Belomestnykh, V. Litvinenko, T. Xin
Stony Brook University, Stony Brook, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
Future electron-hadron collider eRHIC will consist of a six-pass 30-GeV electron ERL and one of RHIC storage rings operating with energy up to 250 GeV. The collider design extensively utilizes superconducting RF (SRF) technology in both electron and hadron parts. This paper describes various SRF systems, their requirements and parameters.

WEPPR099

Shielding of a Hadron in a Finite e-Beam

plasma, electron, shielding, linac

3171

A. Elizarov, V. Litvinenko, G. Wang
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
The thorough study of coherent electron cooling, the modern cooling technique capable to deal with accelerators operating in the range of few TeVs*, rises many interesting questions. One of them is a shielding dynamics of a hadron in an electron beam. Now this effect is computed analytically in an infinite beam approximation**. Many effects are drastically different in finite and infinite plasmas. Here we propose a method to compute the dynamical shielding effect in a finite cylindrical plasma - the realistic model of an electron beam in accelerators.
* V. N. Litvinenko, Y. S. Derbenev, Phys. Rev. Lett. 10², 114801 (2009).
** G. Wang, M. Blaskiewicz, Phys. Rev. E 78, 026413 (2008).

THPPD028

Studies on the LHC Superconducting Circuits and Routine Qualification of Their Functionalities

dipole, cryogenics, collider, target

3563

M. Pojer, G. D'Angelo, R. Mompo, R. Schmidt, M. Solfaroli Camillocci
CERN, Geneva, Switzerland

The Large Hadron Collider (LHC) is systematically undergoing periods of maintenance stop (either 4-5 days stops or longer Christmas breaks), after which some of the superconducting circuits (or the totality of them) have to be re-commissioned to check the correct functionality of all powering and protection systems. Detailed procedures have been developed during the past few years and they have been optimized to increase powering tests efficiency, thus reducing beam downtime. The approach to the routine qualification of the LHC powering systems is described in this paper. During 2011 technical stops, some particular studies on the superconducting circuits were performed, to assess the quality of the superconducting splices of individually powered magnets and to study the quench propagation in the main magnet bus-bars. The methodology of these tests and some results are also presented.

THPPD029

Machine Availability at the Large Hadron Collider

luminosity, cryogenics, controls, collider

3566

M. Pojer, R. Schmidt, M. Solfaroli Camillocci, S. Wagner
CERN, Geneva, Switzerland

One of the most important parameters for a particle accelerator is its uptime, the period of time when it is functioning and available for use. In its second year of operation, the Large Hadron Collider (LHC) has experienced very high machine availability, which is one of the ingredients of its brilliant performance. Some of the strategies followed to increase MTBF are described in the paper. The approach of periodic maintenance stops, often questioned, is also discussed. Some considerations on the ideal length of a physics fill are also drawn.

THPPP006

Radiation Damage to Electronics at the LHC

radiation, shielding, proton, luminosity

3734

M. Brugger
CERN, Geneva, Switzerland

Control systems installed in LHC underground areas using COTS (Commercial Off The Shelf) components are all affected by the risk of ‘Single Event Effects.’ In the LHC tunnel, in addition, cumulative dose effects have also to be considered. While for the tunnel equipment certain radiation tolerant design criteria were already taken into account during the LHC construction phase, most of the equipment placed in adjacent and partly shielded areas was not conceived nor tested for their current radiation environment. Given the large amount of electronics being installed in these areas, a CERN wide project called R2E (Radiation To Electronics) has been initiated to quantify the risk of radiation-induced failures and to mitigate the risk for nominal beams and beyond to below one failure a week. This paper summarizes the analysis and mitigation approach chosen for the LHC, presents the encountered difficulties and the obtained experience in the following aspects: radiation fields & related calculations, monitoring and benchmarking; commercial equipment/systems and their use in the LHC radiation fields; radiation tests with dedicated test areas and facilities*.
* Work presented on behalf of the CERN ’Radiation to Electronics (R2E) Mitigation Project’ and the ‘Radiation Working Group (RadWG)’

THPPP009

Automated Execution and Tracking of the LHC Commissioning Tests

status, controls, LabView, collider

3743

K. Fuchsberger, V. Baggiolini, M. Galetzka, R. Gorbonosov, M. Pojer, M. Solfaroli Camillocci, M. Zerlauth
CERN, Geneva, Switzerland

To ensure the correct operation and prevent system failures, which can lead to equipment damage in the worst case, all critical systems in the Large Hadron Collider (LHC), have to be tested thoroughly during dedicated commissioning phases after each intervention. In view of the around 7,000 individual tests to be performed each year after a Christmas stop, a lot of effort was already put into the automation of these tests at the beginning of LHC hardware commissioning in 2005, to assure the dependable execution and analysis of these tests. To further increase the productivity during the commissioning campaigns and to enforce amore consistent workflow, the development of a dedicated testing framework was launched. This new framework is designed to schedule and track the automated tests for all systems of the LHC and will also be extendable, e.g., to beam commissioning tests. This is achieved by re-using different, already existing execution frameworks. In this paper, we outline the motivation for this new framework and the related improvements in the commissioning process. Further, we sketch its design and present first experience from the re-commissioning campaign in early 2012.

THPPR074

Simulations of Pion Production in the DAEδALUS Target

proton, target, simulation, neutron

4148

A. Bungau, R.J. Barlow
University of Huddersfield, Huddersfield, United Kingdom
J.M. Conrad, T. Smidt, J. Spitz
MIT, Cambridge, Massachusetts, USA
M. Shaevitz
Columbia University, New York, USA

DAEδALUS, the Decay At-rest Experiment for δCP At the Laboratory for Underground Science will look for evidence of CP-violation in the neutrino sector, which may explain the matter/antimatter asymmetry in our universe. It will make precision measurements of oscillations of anti-muon neutrinos to anti-electron neutrinos using multiple neutrino sources created by low-cost compact cyclotrons. DAEδALUS will utilize a decay-at-rest neutrino beam produced by 800 MeV protons impacting a graphite target. Two well established Monte Carlo codes, MARS and GEANT4, have been used to optimize the design and the performance of the target. A benchmarking of the results obtained with these codes is also presented in this paper.