The TIMING System …The TIMING System ……as used in the PS accelerators.

Overview :Overview :

General Timing Aspects and PrincipleHardware aspectsSoftware aspectsControl, Applications, DiagnosticsNew requests, installations and maintenance

General Timing Aspects and PrincipleGeneral Timing Aspects and Principle

What is our mandate ?– Provide the users all necessary pulses for :

Synchronization of the machines (injection, ejection) Power converters pulsing, (charging, firing, acquiring…), Function Generators starting, Instrumentation triggering, clocking, converting…, Processes treatments, RT tasks interrupts…, Observation (NAOS).

– Modify the existing installation according new requirements,

– Provide Help and Assistance to the Operation staff , Equipment specialists, or local Users …,

– Assume diagnostics of faults, maintenance and repair,

– Provide documentation and tools necessary to be able to accomplish the above point.

General Timing Aspects and PrincipleGeneral Timing Aspects and Principle

C0 C275 C805 C1200

INJECTION EJECTION END CYCLESTART CYCLE

FW CYCLE

W CYCLE W INJECTION

FW INJECTION FW EJECTION

W EJECTION

FREE TIMING (From CO to C1200)

Which Timing do we have to deliver ?– Free timings from Start to End of a cycle,

– Linked to a Cycle Event (including Warnings and Forwarnings),

– Linked to a “Process” like Injection, Ejection, Flat Tops… (also including Warnings and Forwarnings)

– Bursts and Repetitive timings

General Timing Aspects and PrincipleGeneral Timing Aspects and Principle How to start a counter ?

– From a direct MTG event available on the MTG cable,– From an external pulse,– Internally from the previous counter,– Between two pulses (Bursts)

What to count ?– Internal C Train (1ms),– 100ns internal train,– External trains (TREV, RF, Synthetiser… < 20MHz)– Cable Train (not used in PS, as I know !)

Conditioning ?– Counting value and enable/disable depending of the Cycle User (PPM : 24

Users => 24 Values + 24 enable/disable)– Output conditioning with check of predefined bit patterns or values in the

previous or current MTG Telegram.

Counting Sequence

C0 C1200

LOAD MTG Event

MTG Telegram

Counter LoadingAccording MTG Telegram data :• CCV User A• Enable User A• GATE

User A

Counter Start Counter Output

Counting

AcquisitionPerformed by TG8 RT task

Telegram Ready Telegram Ready

General Timing Aspects and PrincipleGeneral Timing Aspects and Principle

General Timing Aspects and PrincipleGeneral Timing Aspects and Principle What’s about the machines synchronization ?

BEX.MW8RF BEX.W2RF BEX.SEJ

PIX.MW8RF PIX.W2RF PIX.SINJ

BEX.W10-MTG

PIX.SSYNCC

PIX.W10-MTG

BAX.TREV

BAX.TRF

PIX.TREV

PIX.TRF

Phase Adjust

Phase Adjust

Hardware Aspects Hardware Aspects

Counters : TG8 (>300)– 1 MTG Cable Input,– 2 external Starts,– 2 External Clocks,– 8 Counter Outputs, 1 1KHz Clock Output.

Fine Delays– 2 channels 1ns and 8 channels with frequency dividing.

Survey Modules– 32 Inputs, 50ns.

Accessories Devices– Pulse Repeaters (320), Level Adapters, Gate, RF Distributors,

PTG…

Hardware Aspects Hardware Aspects

Timing Layout– Common approach for all PS accelerators,

– Dedicated Central Timing DSCs for Injection, Ejection,

– Dedicated racks for Pulse Repeaters and Patchs,

– Available Europ Crate above VME for Level adapters, RF Distribution …,

– Distance Timing Distribution via Blocking Level Repeaters,

– Quite systematic connection of TG8 Outputs to TSM.

Software Aspects Software Aspects

Application Programs

DSC VME

RPC ServerData Table

TG8InfoFile

TG8RT TaskTG8RT Task

TG8 Module

TG8 Driver

Equipment Module

TG8 Survey

Alarms Program

General Layout

Software Aspects Software Aspects What is a Timing Equipment and how to access it ?

– PS used the concept of Equipment Modules which allow to drive Equipments of a certain type (Power supplies, Timings, GFAs…),

– Equipment Modules are sets of procedures (EM Properties) and data (contains in a DataTable),

– Configuration, Control, Acquisition of an Equipment is always done with these EM Properties,

– No DIRECT access to DRIVER allowed– An Equipment is declared and defined in Oracle for all their static data

(RO variables),– An equipment can be declared PPM, so can use a set of 24 RW Control

values automatically selected by the MTG USER group value,– A generation procedure allow to build a new DSC image with all

needed information to access a new declared Equipment. Main Equipment Modules relative to Timing System :

– CTIM (MTG Timings) : 1143 equipments,– PTIM-V (TG8 Timings) : 2127 equipments,– PTIMD (Fine Delays) : 103 equipments,– TSM (Timing Survey) : 38 equipments * 32 channels.

Software Aspects Software Aspects Example : A Timing Equipment as declared in Oracle

Software Aspects Software Aspects Example : A TG8 Module as declared in Oracle

Control, Applications, DiagnosticsControl, Applications, Diagnostics Control is done from :

– Standard Console Manager Knobs

Control, Applications, DiagnosticsControl, Applications, Diagnostics Control is done from :

– Standard Console Manager Timing f(t) Application Program

Control, Applications, DiagnosticsControl, Applications, Diagnostics Control is done from :

– Special Application Programs (calculation, instrumentation, beam control…),

– Specialized tools.

Control, Applications, DiagnosticsControl, Applications, Diagnostics Diagnostics can be done with :

– Alarm Program reports,

– TG8 test program from DSC Terminal (Direct TG8 Driver access),

– TSM applications (OP & CO),

Control, Applications, DiagnosticsControl, Applications, Diagnostics Diagnostics can be done with :

– Specialized diagnostic tool,

New Requests, Installation and MaintenanceNew Requests, Installation and Maintenance

New requests come normally from Operation Supervisor of the machines…

… but also from local users or specialists, New installations are “home made” (cabling, DSC and

equipment configurations), keeping in mind that everybody may have to understand it ! (Effort on documentation, naming, labeling, numbering…),

A “Piquet Team” is in charge of the whole Timing System in case of absence of the specialists,