ICALEPCS2017 - List of Authors (Korhonen, T.)

Paper

Title

Page

EPICS 7 Provides Major Enhancements to the EPICS Toolkit

22

L.R. Dalesio, M.A. Davidsaver
Osprey DCS LLC, Ocean City, USA
S.M. Hartman, K.-U. Kasemir
ORNL, Oak Ridge, Tennessee, USA
A.N. Johnson
ANL, Argonne, Illinois, USA
H. Junkes
FHI, Berlin, Germany
T. Korhonen
ESS, Lund, Sweden
M.R. Kraimer
Self Employment, Private address, USA
R. Lange
ITER Organization, St. Paul lez Durance, France
G. Shen
FRIB, East Lansing, USA
K. Shroff
BNL, Upton, Long Island, New York, USA

The release of EPICS 7 marks a major enhancement to the EPICS toolkit. EPICS 7 combines the proven functionality, reliability and capability of EPICS V3 with the powerful EPICS V4 extensions enabling high-performance network transfers of structured data. The code bases have been merged and reorganized. EPICS 7 provides a new platform for control system development, suitable for data acquisition and high-level services. This paper presents the current state of the EPICS 7 release, including the pvAccess network protocol, normative data types, and language bindings, along with descriptions of new client and service applications.

Talk as video stream: https://youtu.be/Er2uQitieWI

Slides MOBPL01 [1.155 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOBPL01

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MOCPL05

ECMC, the Open Source Motion Control Package for EtherCAT Hardware at the ESS

71

T. Gahl, D.P. Brodrick, T. Bögershausen, O. Kirstein, T. Korhonen, D.P. Piso, A. Sandström
ESS, Lund, Sweden

In industry the open standard EtherCAT* is well established as a real-time fieldbus for largely distributed and synchronised systems. Open source solutions for the bus master have been first introduced in scientific installations by Diamond Light Source** and PSI using EtherCAT hardware for digital and analog I/Os. The European Spallation Source (ESS) decided to establish open source EtherCAT systems for mid-performance data acquisition and motion control on accelerator applications. In this contribution we present the motion control software package ECMC developed at the ESS using the open source Etherlab*** master to control the EtherCAT bus. The motion control interfaces with a model 3 driver to the EPICS motor record supporting it's functionalities like positioning, jogging, homing and soft/hard limits. Advanced functionalities supported by ECMC are full servo-loop feedback, a scripting language for custom synchronisation of different axes, virtual axes, externally triggered position capture and interlocking. On the example of prototyping a 2-axis wire scanner we show a fully EPICS integrated application of ECMC on different EtherCAT and CPU hardware platforms.
* http://www.ethercat.org
** R. Mercado, I. J. Gillingham, J. H. Rowland, K. Wilkinson "Integrating EtherCAT based IO into EPICS at Diamond." ICALEPCS 2011, Grenoble 2011
*** http://www.etherlab.org

Talk as video stream: https://youtu.be/SuQiKSMbfvs

Slides MOCPL05 [1.081 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL05

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TUPHA088

Timing System at ESS

618

J. Cereijo García, T. Korhonen, J.H. Lee
ESS, Lund, Sweden

The European Spallation Source (ESS) timing system is based on the hardware developed by Micro-Research Finland (MRF). The main purposes of the timing system are: generation and distribution of synchronous clock signals and trigger events to the facility, providing a time base so that data from different systems can be time-correlated and synchronous transmission of beam-related data for for different subsystems of the facility. The timing system has a tree topology: one Event Generator (EVG) sends the events, clocks and data to an array of Event Receivers (EVRs) through an optical distribution layer (fan-out modules). The event clock frequency for ESS will be 88.0525 MHz, divided down from the bunch frequency of 352.21 MHz. An integer number of ticks of this clock will define the beam macro pulse full length, around 2.86 ms, with a repetition rate of 14 Hz. An active delay compensation mechanism will provide stability against long-term drifts. A novelty of ESS compared to other facilities is the use of the features provided by EVRs in uTCA form factor, such as trigger and clock distribution over the backplane. These EVRs are already being deployed in some systems and test stands.

Poster TUPHA088 [3.033 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA088

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WEBPL01

EPICS Architecture for Neutron Instrument Control at the European Spallation Source

1043

D.P. Brodrick, T. Brys, T. Korhonen, J.E. Sparger
ESS, Lund, Sweden

The European Spallation Source (ESS) are currently developing a suite of fifteen neutron instruments, the first eight of which will be available for routine scientific use by 2023. The instrument control system will be distributed through three layers: local controllers for individual instrument components; Experimental Physics and Industrial Control System (EPICS) software to implement higher level logic and act as a hardware abstraction layer; and an Experiment Control Program (ECP) which has an executive role, interacting with instrument components via the EPICS layer. ESS are now actively designing and prototyping the EPICS controls architecture for the neutron instruments, including systems which interface to core instrument components such as motion control systems, sample environment equipment, neutron choppers, instrument Programmable Logic Controller (PLC) systems, and the interfaces to the ECP. Prototyping activities have been executed in an integrated and coordinated manner to demonstrate the EPICS controls architecture in an environment representative of the neutron instruments to which the architecture will ultimately be applied.

Talk as video stream: https://youtu.be/eRSLBMHqQLM

Slides WEBPL01 [6.972 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEBPL01

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRBPL01

EPICS Satellite Meeting

T. Korhonen
ESS, Lund, Sweden

EPICS (Experimental Physics and Industrial Control System) is a set of Open Source software tools, libraries and applications developed collaboratively and used worldwide to create distributed soft real-time control systems for scientific instruments such as a particle accelerators, telescopes, experiment beam lines and other large scientific experiments. The EPICS collaboration meeting provides an opportunity for developers and managers from the various different sites to come together and discuss their work in progress and make plans for the future. They give a chance to see what is being done at other laboratories, and to review the specifications for new tools or enhancements to existing ones in order to maximize their usefulness to the whole community and avoid duplication of effort. Topics that will be addressed: - The upcoming EPICS 7 release - Project status reports -User Interface tools - Technical presentations from EPICS users.

Talk as video stream: https://youtu.be/aC7GEW0rios

Slides FRBPL01 [0.904 MB]

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Paper	Title	Page
MOBPL01	EPICS 7 Provides Major Enhancements to the EPICS Toolkit	22
	L.R. Dalesio, M.A. Davidsaver Osprey DCS LLC, Ocean City, USA S.M. Hartman, K.-U. Kasemir ORNL, Oak Ridge, Tennessee, USA A.N. Johnson ANL, Argonne, Illinois, USA H. Junkes FHI, Berlin, Germany T. Korhonen ESS, Lund, Sweden M.R. Kraimer Self Employment, Private address, USA R. Lange ITER Organization, St. Paul lez Durance, France G. Shen FRIB, East Lansing, USA K. Shroff BNL, Upton, Long Island, New York, USA
	The release of EPICS 7 marks a major enhancement to the EPICS toolkit. EPICS 7 combines the proven functionality, reliability and capability of EPICS V3 with the powerful EPICS V4 extensions enabling high-performance network transfers of structured data. The code bases have been merged and reorganized. EPICS 7 provides a new platform for control system development, suitable for data acquisition and high-level services. This paper presents the current state of the EPICS 7 release, including the pvAccess network protocol, normative data types, and language bindings, along with descriptions of new client and service applications.
	Talk as video stream: https://youtu.be/Er2uQitieWI
	Slides MOBPL01 [1.155 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOBPL01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOCPL05	ECMC, the Open Source Motion Control Package for EtherCAT Hardware at the ESS	71
	T. Gahl, D.P. Brodrick, T. Bögershausen, O. Kirstein, T. Korhonen, D.P. Piso, A. Sandström ESS, Lund, Sweden
	In industry the open standard EtherCAT* is well established as a real-time fieldbus for largely distributed and synchronised systems. Open source solutions for the bus master have been first introduced in scientific installations by Diamond Light Source and PSI using EtherCAT hardware for digital and analog I/Os. The European Spallation Source (ESS) decided to establish open source EtherCAT systems for mid-performance data acquisition and motion control on accelerator applications. In this contribution we present the motion control software package ECMC developed at the ESS using the open source Etherlab* master to control the EtherCAT bus. The motion control interfaces with a model 3 driver to the EPICS motor record supporting it's functionalities like positioning, jogging, homing and soft/hard limits. Advanced functionalities supported by ECMC are full servo-loop feedback, a scripting language for custom synchronisation of different axes, virtual axes, externally triggered position capture and interlocking. On the example of prototyping a 2-axis wire scanner we show a fully EPICS integrated application of ECMC on different EtherCAT and CPU hardware platforms. * http://www.ethercat.org R. Mercado, I. J. Gillingham, J. H. Rowland, K. Wilkinson "Integrating EtherCAT based IO into EPICS at Diamond." ICALEPCS 2011, Grenoble 2011 * http://www.etherlab.org
	Talk as video stream: https://youtu.be/SuQiKSMbfvs
	Slides MOCPL05 [1.081 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL05
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPHA088	Timing System at ESS	618
	J. Cereijo García, T. Korhonen, J.H. Lee ESS, Lund, Sweden
	The European Spallation Source (ESS) timing system is based on the hardware developed by Micro-Research Finland (MRF). The main purposes of the timing system are: generation and distribution of synchronous clock signals and trigger events to the facility, providing a time base so that data from different systems can be time-correlated and synchronous transmission of beam-related data for for different subsystems of the facility. The timing system has a tree topology: one Event Generator (EVG) sends the events, clocks and data to an array of Event Receivers (EVRs) through an optical distribution layer (fan-out modules). The event clock frequency for ESS will be 88.0525 MHz, divided down from the bunch frequency of 352.21 MHz. An integer number of ticks of this clock will define the beam macro pulse full length, around 2.86 ms, with a repetition rate of 14 Hz. An active delay compensation mechanism will provide stability against long-term drifts. A novelty of ESS compared to other facilities is the use of the features provided by EVRs in uTCA form factor, such as trigger and clock distribution over the backplane. These EVRs are already being deployed in some systems and test stands.
	Poster TUPHA088 [3.033 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA088
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEBPL01	EPICS Architecture for Neutron Instrument Control at the European Spallation Source	1043
	D.P. Brodrick, T. Brys, T. Korhonen, J.E. Sparger ESS, Lund, Sweden
	The European Spallation Source (ESS) are currently developing a suite of fifteen neutron instruments, the first eight of which will be available for routine scientific use by 2023. The instrument control system will be distributed through three layers: local controllers for individual instrument components; Experimental Physics and Industrial Control System (EPICS) software to implement higher level logic and act as a hardware abstraction layer; and an Experiment Control Program (ECP) which has an executive role, interacting with instrument components via the EPICS layer. ESS are now actively designing and prototyping the EPICS controls architecture for the neutron instruments, including systems which interface to core instrument components such as motion control systems, sample environment equipment, neutron choppers, instrument Programmable Logic Controller (PLC) systems, and the interfaces to the ECP. Prototyping activities have been executed in an integrated and coordinated manner to demonstrate the EPICS controls architecture in an environment representative of the neutron instruments to which the architecture will ultimately be applied.
	Talk as video stream: https://youtu.be/eRSLBMHqQLM
	Slides WEBPL01 [6.972 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEBPL01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRBPL01	EPICS Satellite Meeting
	T. Korhonen ESS, Lund, Sweden
	EPICS (Experimental Physics and Industrial Control System) is a set of Open Source software tools, libraries and applications developed collaboratively and used worldwide to create distributed soft real-time control systems for scientific instruments such as a particle accelerators, telescopes, experiment beam lines and other large scientific experiments. The EPICS collaboration meeting provides an opportunity for developers and managers from the various different sites to come together and discuss their work in progress and make plans for the future. They give a chance to see what is being done at other laboratories, and to review the specifications for new tools or enhancements to existing ones in order to maximize their usefulness to the whole community and avoid duplication of effort. Topics that will be addressed: - The upcoming EPICS 7 release - Project status reports -User Interface tools - Technical presentations from EPICS users.
	Talk as video stream: https://youtu.be/aC7GEW0rios
	Slides FRBPL01 [0.904 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)