1. ATF/ATF2 Control System
N.Terunuma (KEK)
ILC European Regional Meeting and ILC-BDIR
20 June 2005 to 23 June 2005, RHUL, London

2. Contents Overview of ATF control system
ATF/ATF2 Control System
Contents
Overview of ATF control system
Hardware (Devices, CAMAC, Timing,…)
Software (Database, Optics control,…)
Others (Communications, System for study group…)
Concept and plan toward the ATF2 upgrade
Interface of ATF2 subsystem…
Optics control tools…

3. Number of Major Components
Overview of ATF control system: Hardware
Number of Major Components
ATF
ATF2
Magnets
500
50?
BPMs
162
30?
Vacuum
239 ?
Current monitors 8
1 or 2
Screen monitors 40
Wire scanners 13
LW?
Temperature
150
RF units 12
None
Control channels will be increased about 10% by adding ATF2 devices.

4. Device Control Stations for ATF
Overview of ATF control system: Hardware
Device Control Stations for ATF
Control stations are distributed whole ATF area and they are connected through the CAMAC serial highways and the Ethernet devices. We use 73 CAMAC crates for ATF.
ATF2 is here.

5. CAMAC Serial Highway We have two highways on ATF control system.
Overview of ATF control system: Hardware
CAMAC Serial Highway
We have two highways on ATF control system.
LINAC/BT
DR/EXT, Beam monitors
Beam monitors are in the same highway to get data as fast as possible.
Total 73 crates and 937 modules.
Covers most of the ATF device interfaces, >90%.
They are controlled by two Linux PCs.
Data are transferred to the master VMS server by TCP/IP connections.

6. Standalone Ethernet-CAMAC
Overview of ATF control system: Hardware
Standalone Ethernet-CAMAC
On board Linux PC.
Local data acquisition system for the huge data handling in the controller.
It is also used for standalone and cyclic actions.
We use it for…
Turn-by-turn position monitor
4 BPMs x 2 ch x turns
Tune measurements
Fast kicker experiments
Multi-train injection system
DR RF bucket selection
Up to 25 Hz operation

7. Timing system Reference Trigger signals
Overview of ATF control system: Hardware
Timing system
Reference
Freq. of master oscillator is 1428 MHz.
It is converted to 2856, 714, 357 and 2.16 MHz. These clocks are distributed in whole ATF area.
Trigger signals
Synchronized to the AC power line (50Hz).
Time delay among the devices is created by synchronous and delay counter module (TD2, CAMAC, 13 or 17bits clock counters ).
2.8 ns step by 357 MHz
462 ns step by 2.16 MHz

8. Computer configuration of main system
Overview of ATF control system: Hardware
Computer configuration of main system
We use the V-system and the VMS operating system with a lot of developed resources.
Moving to the Linux system to get a better performance.
1996, DR commissioning
2005
Core system
VMS cluster v6.5,
Alpha 2100,
V-system 2.5
VMS 7.3-2, standalone,
Alpha DS10,
V-system 4.3
CAMAC drivers (two highways)
VAX 4100
Kinetics’s driver software
Linux PCs
ATF written driver software
Consoles
VAX stations
Image analyzer
HP workstations
Network
Ethernet 10Mb/s
Ethernet 100Mb/s
Gigabit Ethernet

9. Process Control Database System
Overview of ATF control system: Software
Process Control Database System
V-system
Commercial software by VISTA Control Systems.
Successful choice for ATF.
Limited software workers (4).
Automatic signaling to other processes that refer the target data channels.
Using FORTRAN or C,
User can call the database.
Database access can execute the user written programs.
V-system tools
User written software
Applications

10. Network and Control Processes
Overview of ATF control system: Software
Network and Control Processes
All Ethernet devices are connected directory on the KEK network.
We will establish the ATF local network in this summer shutdown.
Avoid the unexpected ATF shutdown due to the down of KEK network.
We have two sets of CAMAC serial highway which managed by Linux server. Raw data are transferred into the database (V-system) server by Ethernet.
Database is running only on the VMS server because of the license.
Monitoring the beam positions are limited about 3 Hz beam rep. rate.
On the database server,
About 80 processes are running for the ATF operation.
About 30 processes of them are communication tasks for the Ethernet devices.

11. Optics Control Tools ATF uses SAD for modeling.
Overview of ATF control system: Software
Optics Control Tools
ATF uses SAD for modeling.
SAD system is maintained by KEKB group and placed there.
Download and upload the optics to ATF magnets.
Do corrections for the ATF beam tuning.
Closed orbit, dispersion, local bump, skews…
Data are transferred by NFS and RSH between the ATF server and the SAD server.
Conversions to/from K-values on SAD are done on the ATF server.
Other control tools used by collaborators
SLAC group uses their own software by MATLAB on the ATF server for BBA DAQ. Use MAD on their PC.

12. Communications Web Logbook Conference system
Overview of ATF control system: Others
Communications
Web
No page to show the ATF status is maintained now.
We are planning to modify the ATF pages for collaborators.
Pages to show the results of ATF/ATF2 will be opened for other scientists.
Logbook
e-logbook is not yet installed.
Planning to install but it may be opened only for collaborators.
Conference system
We have no Video/Phone system near the ATF control room.

13. Overview of ATF control system: Others
Remote Control Issue
GAN (Global Accelerator Network) like operation is not allowed for ATF operation.
Radiation Safety Policy at KEK
No beam operation is permitted without the shift leader in the control room.
Shift leader should be a KEK stuff who can take care the safety issues.
ATF Group Safety Understanding
No control from out of ATF area have been done without the monitoring by ATF operators.

14. Control system for study groups
Overview of ATF control system: Others
Control system for study groups
Each study group (for developments of some devices) can use their own devices (including PCs) as an independent system to ATF’s.
It will ensure the flexibility of group activities.
They must follow the KEK network policy.
They can communicate to the ATF control system by using the TCP/IP socket standard.
We made the server/client package.
It is supported only for the Linux system by ATF.
Other system can be used by importing them.
Network connection from outside must use VPN with KEK permissions.

15. Concept and plan toward the ATF2
Discussion about ATF2 control system is just started.
ATF2 control will be an add-on subsystem to the current ATF system.
ATF and ATF2 control system must be unified.
ATF2 will increase the number of control channels about 10% of ATF’s.
We have to simplify the style of operator interfaces for ATF/ATF2 system.
No major changes for the current ATF system.
We can select any system and tools for ATF2 subsystem if they can use the standard TCP/IP socket functions.

16. Interface for ATF2 subsystem
Concept and plan toward the ATF2
Interface for ATF2 subsystem
To share the control with ATF core system, desirable hardware interfaces of ATF2 subsystems are as follows.
CAMAC (Serial highway or Ethernet)
SLAC magnet movers for FFTB are controlled by CAMAC.
Magnet power supplies?
VME (Ethernet)
Cavity BPM interface?
Software? Linux system? EPICS?
Others on PC (Ethernet)
PCI based D/A or A/D modules?
Linux or Windows? EPICS or User written programs?

17. Trigger signals Clocks
Concept and plan toward the ATF2
Trigger signals
Clocks
2.16 MHz for Timing Delay modules.
2.8 ns step
Trigger signals (synchronized to the beam extraction)
~ 1s? before beam comes
Continuous pulse
Controlled pulse by DAQ system for ATF beam monitors
LINAC/DR/EXT and ATF2 will see the same beam pulse.

18. Optics Control tools for ATF2
Concept and plan toward the ATF2
Optics Control tools for ATF2
We will prepare tools based on SAD. They will be an updated version of the current ATF system.
We also can install MAD to the ATF Linux server.
MAD/SAD transformation is a subject for the optics study group.
Interface between MAD and ATF control system may be done by preparing the common data format as we do it on SAD.

19. Summary Discussion about ATF2 control system is just started.
ATF2 control will be an add-on subsystem to the current ATF system.