December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 1

AIP 67-2901/02 Review

LINAC SECTORS 22 AND 23

QE MAGNET POWER SYSTEM UPGRADE

Paul Bellomo / Serge Ratkovsky

December 6, 2007

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 2

RESTATED SCOPE AND MOTIVATIONS

Scope on October 31, 2007

• Upgrade “QE” magnet power supplies and controllers in LINAC Sectors 22 and 23

• Two new “bulk” power supplies and sixteen new “boost” supplies

• New Ethernet power supply controllers, new zero flux current transductors, new PPS chassis

Motivations

• Equipment more than 20 years old and at end of useful life. Unreliable, lack of available parts will affect future LINAC operations

• Better short and long-term current stability

• Interface with new EPICS-based control system for better diagnostics

• Lower line harmonics, noise, power consumption

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 3

CHANGES SINCE 07/10/31 REVIEW

Review Topics

1. Downtime length

2. Two to three bulk power supplies

3. Possible purchase of new rack

4. PPS elimination – use magnet covers

5. Commitment of Controls Department to support this effort

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 4

1. DOWNTIME LENGTH

Original and Present Understandings and Plan

Issue October 31, 2007 Plan December 6, 2007 Plan

Downtime 10 weeks – 10/1 through 12/15/08

4 weeks – 10/1 through 10/31/08

Build plan Refurbish racks and assemble/test in field

Purchase new racks and assemble / test in B15

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 5

2. TWO TO THREE BULK POWER SUPPLIES

Mode / PS Type SLC LCLS

Bulk 200A 139V 25A 17V

Boost 20A 17V 20A 3.7V

Change in rating and use of 3 bulk PS:

1. Better match of rating to load (225A – 200A or 25A) in SLC and LCLS modes

2. Less expensive, smaller and COTS

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 6

THE EXISTING

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 7

THE REVISED BULK PS TOPOLOGY

Bulk power supplies were identified as the critical path item if custom designed – COTS desired

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 8

CONTROL OF 3 PS DIAGRAM

Black items are provided by power supply manufacturer\

Red items are provided by SLAC

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 9

3. POSSIBLE NEW RACK PURCHASE

The issue is time! A 4 week downtime will not allow for field rack refurbishment, system assembly, and test

• Two new single bay racks – $4,000 * 2 = $8,000

• Cost to refurbish existing racks = 2 racks * 2 techs * 9 days / rack * 1 month / 20 days *$8.5k / month = $15,300 + $500 materials = $15,800

Note: Costs are unburdened and are for comparison purposes only

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 10

4. PPS ELIMINATION - USE MAGNET COVERS

PPS System Magnet Covers

EDI: 1engr*0.5mon*$15.1k/mon + 1coord*0.5mon*$10.5k/mon +

1 tech * 0.5day/chassis * 4 chassis* 1mon/20days * $8.5k/mon = $13.7k

EDI: Previously completed

M & S: 4 chassis * $5k/chassis = $20k M & S: $300*16 = $4.8k

Assembly/Install: 1tech*3 days/chassis *4 chassis *1mon/20days * $8.5k/mon = $4.8k

Assembly/Install: 16manhours/cover *16 covers $77.50/hour = $19.8k

Total cost: $38.5k Total cost: $24.6k

Notes: Costs are unburdened and are shown for comparison purposes

Consistency with Sector 20, 21 and 24 magnets

December 6, 2007 AIP 67-2901/02 P Bellomo - QE Magnet Power System Upgrade 11

5. CONTROLS COMMITMENT – LAST SLIDE

• Network switch purchase needed

• Soft IOCs exist

• Programming support to recognize new systems (operating programs, displays, etc already written)

Network Switchswh-li22-nw02

EPSC (Q22401)

EPSC (Q22601)

EPSC (Q22201)

EPSC (Q22701)

EPSC (Q22501)

EPSC( Q22901)

EPSC (Q22801)

EPSC (Q22301)

Terminal Serverts-li22-nw01

EPSC (bulk)

EPICS IOC

Optional

MCOR

Bulk

Ethernet

Linac Sector LI22 Network Block Diagram

Network Switchswh-li23-nw02

EPSC (Q23401)

EPSC (Q23601)

EPSC (Q23201)

EPSC (Q23701)

EPSC (Q23501)

EPSC( Q23901)

EPSC (Q23801)

EPSC (Q23301)

Terminal Serverts-li23-nw01

EPSC (bulk)

EPICS IOC

Optional

MCOR

Bulk

Ethernet

Linac Sector LI23 Network Block Diagram

Controls Phase I

• Soft IOC: Linux box dedicated to magnet ps control (optional)• Software

– Database– Displays– Software exists to control ps separate as first pass (P. Emma ok).

• Hardware– Ethernet:: 18 connections (9 per sector)– Terminal Server: 18 connections (9 per sector)– Intra-rack Cables

• Labor

Controls Phase II

• Software– Database– Displays

• Hardware– Ethernet: 4 Ethernet connections (2 per sector)– Terminal Server: 2 connections (1 per sector)– 2U VME Crate $5000.00– Evr pmc module $2000.00– Acromag IP Carrier AVME9670 w/P0 $ 700.00– Hytec ip-8413-adc, +/-10V, 16-bit, 16-chan adc $2000.00– Acromag ip231-16E +/-10V, 16-bit,16-chan dac $1375.00– Acromag Trans 200 Transition module $ 275.00 – Intra-rack cables $ 250.00– Labor $ 500.00

» Total: $