# Presentation: 142427

## Controls Global Group Tasks

*John Carwardine*
*Feb 8, 2006*

## Focus on three areas...

**Develop a reference design and costing for RDR**
- The high priority activity of GDE in 2006.
**Continue to develop the baseline design**
**Pursue key R&D activities**
- LLRF development at various test stands (TTF, ILCTA, etc)
- RF phase / timing distribution
- High Availability

## 	Continue to develop the baseline design and BCD

## Instrumentation & Control outline in BCD

**11.1 ****	****Controls Standard Architecture **
**11.2 Timing System **
**11.3 Diagnostic Interlock Layer **
**11.4 Global Network **
**11.5 Machine Protection **
**11.6 Low level RF **
**11.7 Feedback **
**11.8 Integration with Instrumentation **
**11.9 Machine Detector Interface **
**11.10 Instrumentation – Beam position monitors **
**11.11 Instrumentation – Beam profile monitors (transverse) **
**11.12 Instrumentation – Longitudinal  **
**11.13 Instrumentation – other (intensity, loss, ring) **

## Control system architecture in BCD...

## Issues arisen from BCD Comments

- Comments received from Toge, Lockyer, Himel
- Communicate to technical system and accelerator area leaders the implications of ATCA and Control System High Availability.
- Change baseline design from VME/VXI to ATCA.
- Address failure modes for the rf phase reference distribution system (phase jumps).
- We need more diagrams to communicate what the control system will look like (being done...)

## Main tasks still to do (BCD)

***To be addressed by BCD section authors...***
- Update other BCD sections in response to comments.
- Expand LLRF and feedback sections.
- Respond to comments from Himel, Toge, Lockyer (written)
- New summary has been written.
- Submit case for ATCA instead of VME/VXI.
- Submit updated BCD to CCB before Bangalore.
***To be addressed by the Controls Topic Groups...***
- Understand requirements from accelerator areas.
- Continue to develop control system design details.
- Apportion the RF performance requirements across the subsystems.
*	*

## Controls Topic Groups

**CONTROLS INTEGRATION (overall integration)**
- Carwardine (ANL), Simrock (DESY), Michizono (KEK), Mcbride (FNAL)
**CONTROL SYSTEM ARCHITECTURE**
- Saunders (ANL), Clausen (DESY), Rehlich (DESY), Votava (FNAL) Rechenmacher, Pavlicek (FNAL), Furukawa (KEK)
**DATA ACQUISITION / CONTROL**
- Wendt (FNAL), Votava (FNAL)
**HIGH AVAILABILITY**
- Larsen (SLAC), Downing (SLAC), Lenkszus (ANL), Saunders (ANL).
**CONTROLS / INSTRUMENTATION INTEGRATION**
- Wendt (FNAL)

## Controls Topic Groups (2)

**LLRF**
- Nageitsev (FNAL), Cancelo (FNAL), Carcagno* *(FNAL), Chase (FNAL), Simrock (DESY), Michizono (KEK), Lockyer (U.Penn)
**TIMING AND RF PHASE REFERENCE DISTRIBUTION**
- Lenkszus (ANL), Frisch (SLAC), Pavlicek (FNAL), Matsumoto (KEK)
**MACHINE PROTECTION SYSTEM**
- Ross (SLAC), Lenkszus (ANL)
**BEAM-BASED FEEDBACK**
- Burrows (U. Oxford), Carwardine (ANL), Lebrun (FNAL), White (U. Oxford)

## Instrumentation Topic Groups

**BEAM POSITION MONITORS:**
- Smith (SLAC), Wendt (FNAL), Baboi (DESY)
**BEAM PROFILE MONITORS - LASERWIRE:**
- Blair (RHUL), Urakawa (KEK)
**BEAM INTENSITY MONITORS, BEAM LOSS MONITORS:**
- TBA
**BUNCH LENGTH MONITORS:**
- Ross (SLAC)
**SPECIAL INSTRUMENTATION:**
- Ross (SLAC), KEK physicist

## 	Pursue key R&D activities

## LLRF development

**FNAL, DESY, KEK already actively pursuing this with regard to test stands (ILCTA, TTF, ATF-2, etc)**
**[Feb 9-10****th**** workshop]**
**Should determine how we can best integrate the test stands into other controls related development activities.**

## Timing / RF phase reference distribution

*Various issues discussed at Jan 19-20 meeting, including...*
- Evaluate and demonstrate various options
- Trench test of fiber system (vs coil in oven)
- Sector test – the copper part (local distribution).
- Two-channel receiver comparator scheme
- Low-cost way of building a vcxo with sufficient performance?
- “To chop or not to chop”
- Different schemes to meet the bunch compressor requirements.
- Failure modes and effects analysis.
- Pursue HOM phase detector scheme.

## Feedback development issues

*Various issues discussed at Jan 19-20 meeting, including...*
- How do the beam-based feedback systems deal with exceptions?
- Startup, beam loss, MPS trip, etc
- Detecting and handing bad sensors or actuators.
- Integrated simulation of LLRF and beam-based feedback.
- Interplay between the various feedbacks and feed-forwards?
- How does beam-based feedback help the rf specs?
- How many intra-train feedbacks do we have, and how many pulses do they collectively take to converge?
- Should beam trajectory feedback be several individual loops or a single global system?

## High Availability control system demo

**R&D Roadmap (starting point)**
- Claude’s proposal
*ATCA + EPICS iocCore + shelf manager + ICE middleware*
*Claude to set up discussion with interested parties.*
*Develop an AMC module to plug in / integrate with Claude’s ATCA crate.*
- How do we utilize the test stands (ILCTA, ATF, TTF)? Feb 9/10 Fermilab mtg

## 	Develop a reference design and costing for RDR

## RDR Design Matrix

## “Charges for RDR Leaders” memo of 1/12/06

***[see Ray Larsen’s table]***

## Guidance for costing exercise

**High level guidance**
- Expected margin of error for control system costing is +/-30%.
- Focus first on overall ILC cost drivers first.
- DCB looking for resolution of a few x 0.1% (~$50M).
- Priority should be on a top-down rather than bottom-up costing.
- Use what has already been done for NLC, TTR, USLCTOS, etc
- The RDR is not a detailed design document.
- Need to include ‘everything’
**We need to know what to cost and how many...**

## Baseline is a High Availability control system...

**Front-end hardware**
- Switch from VME to ATCA in baseline for RDR.
- Need to know what needs hardware redundancy at front-end.
**Servers etc**
- Need to budget for HA relational databases, software, central computing, data archivers, etc
- Central computing + archiving + data backups, etc is part of controls domain. MIS computing is not.
**Control system**
- We will provide infrastructure for implementing HA functionality.
- We have to make the middleware reliable (especially).
- Cost will be in implementing the recovery policies.
- To what level do we go with HA software in the various layers?

## Main tasks to do (RDR and costing)

- Develop WBS structure for Controls and LLRF.
- Collect baseline info from accelerator areas.
- Develop Control System and LLRF block diagrams.
- Generate Excel spreadsheet of line items for costing exercise.
- Meet RDR deliverables, as listed in the “Charge to RDR Leaders” memo.
- Prepare for LLRF and Controls reviews in April/May.
*Issue: an apparent lack of availability of people to work on RDR.*

## Immediate tasks

**Continue to develop the integrated control system diagram.**
**Develop an RF/LLRF block diagram of each accelerator area (linac is the most important to do first)**
- How many I/O + DAQ channels.
- How many relay racks.
- Cable plant.
**Develop a controls block diagram for each accelerator area**
- How many I/O + DAQ channels.
- How many relay racks.
- Show interfaces to LLRF, Instrumentation, Timing, MPS, etc
- Cable plant.

## Control System WBS outline

**Global Control System **
- <List of global systems>
*<Control system line items>*
**<Accelerator Areas>**
- <Technical Systems>
*<Control System line items>*
- RF System
*<LLRF line items>*
*<Control System line items>*
**We need information from the area and technical leaders to complete the Controls WBS for the accelerator areas.**

## Control System WBS (Global level)

**Global level (starting point)**
- Central computing
- Networking infrastructure
- Timing system / RF phase reference.
- Central MPS
- Personnel Protection System
- Control Room(s)
- Data archiving
- Control System Software development
- Installation / commissioning
**Aim to develop a structure with nodes that can be costed and that can be cloned as needed.**

## Requirements gathering exercise

**Plan:**
- Appoint two points of contact (POC) for each of the six accelerator areas: one for LLRF; one for the Control System.
- Appoint one POC for each of the five global groups.
**Goals:**
- Get a broad-brush understanding of the scope of the control system requirements to be able to cost the control system.
- Create building-blocks for the RDR costing exercise.
- Help establish treaty points.
**Initial deliverables from each Point of Contact**
- Block diagram showing functions and basic geographic layout.
- Estimate of number of I/O channels and data rates.

## Proposal for accelerator area POCs

|  | E- source | E+ source | Damping Ring | RTML | Linac | BDS |
| --- | --- | --- | --- | --- | --- | --- |
| LLRF |  |  |  |  |  |  |
| Controls |  |  |  |  |  |  |

## Integrated control system block diagrams

**We should develop a hierarchy of block diagrams for the integrated control system**
- Integrated control system functional diagram (Ned’s diagram)
- Block diagram of each global subsystem
*Timing, MPS, archiving, central control system, etc, etc*
- Block diagram of each accelerator area control system
*E-, E+, DR, RTML, Linac, BDS*
- Block diagram of each accelerator area LLRF system
*E-, E+, DR, RTML, Linac, BDS*
- Beam-based feedback.
- Hardware/geographic and software centric views.
**Each block becomes a node on the WBS.**

## ICS Functional Diagram

***“******Ned’s Diagram” (2/1/06 revision)***

## ICS Functional Diagram (detail)

## Cryo section block diagram

## Summary: RDR action items

- Identify Points of Contact for accelerators and global groups
- POCs develop LLRF and controls block diagrams for each accelerator area.
- Develop the controls story for Bangalore.
- Develop a costable WBS for Controls and LLRF.
- Define costing procedures.
- Prepare for first review in April/May timeframe.

## We need a pitch for Bangalore...

**Strategy for completing the RDR task**
- Management, technical, etc
**How we see things coming together.**
**What we need from the area, technical, and global groups.**
**R&D issues for controls and LLRF.**