NUMI NuMI Magnet Power Supply System WBS 1.1.3 Power Supply System Level 3 Manager Nancy Grossman...

NUMI

NuMI Magnet Power Supply

System

WBS 1.1.3 Power Supply System

Level 3 Manager

Nancy Grossman

FNAL

July 11, 2001

NUMI

NuMI Internal ReviewJuly 11, 2001

Magnet Power Supply System

Outline

Overview and Specifications (Nancy Grossman, 20’) Conventional Power Supplies and Cables (PS) Kicker Power Supply and Cables (PS)

Status of Refurbished PS (Steve Hays, 30’) Status of Kicker PS (Chris Jensen, 30’) Status of Cooling System for PS (Dave Pushka, 30’)

Cost/Schedule/Concerns (Nancy Grossman, 10’)

NUMI



Overview of the Magnet Power Supply System

Conventional Power Supplies (PS) (all existing PS’s to be refurbished or bought from FNAL spares inventory; Steve Hays, Bob Ducar)

Ten 500 KW PS 1 Main Ring PS Three 240 KW PS (one used at MI8 for testing horns)Ten 20 KW PSPS for 12 Main Injector trim magnets

1 Kicker PS (to be designed, built and tested; Chris Jensen) AC (480 panel to PS) and DC Power Supply Cables and Connectors (Steve

Hays, Bob Ducar) All large power supplies are ramped. All quad and trim PS’s are DC and have their own PS.

NUMI



Refurbished Magnet Power SuppliesSpecifications

Conventional Power Supplies and Cables (Steve Hays, Bob Ducar) Must provide reliable, stable power to beamline elements while minimizing power

consumption. The NuMI facility is expected to be operational for of order ten years, and the power

supply system has been designed with this in mind. Power supplies must accommodate a repetition period of 1.9 seconds (~1 msec flatop).

Want PS to stabilize at flatop, read it to check current and have time to still extract. Personnel safety must be assured from possible electrical, mechanical and radiological

hazards during installation and operations. Voltage and current requirements for the various beamline elements determine what

power supplies and cables will be needed. Table summarizes these requirements and indicates the chosen power supply for each

case. For beam tuning and focusing, each trim and quadropole magnet has its own power

supply. Bend circuits use several 500 kW supplies in series (or for the V105 circuit a Main Ring

Power Supply) in order to obtain the desired voltage levels.

NUMI



Refurbished Magnet Power Supplies:MI60

1.9CABLE PEAK Min. Power Supply Total RMS Fdr Peak

MAGNET # TYPE # L CURR. Curr. TYPE Volt Curr. PS Loses PWR Load FdrTYPE MAGs kcmil 1 way (ft) (amps) (amps) #, Man./Pwr (volts) (amps) (kW) (kW) kVA kVA

MI60 Power SuppliesKicker (I:KPS6N)) kicker 1LAMB (I:LAM60) Lamb. 3 500 3 154 1445 0 1, Xrex/500kW 200 2500 7.32 31 205 405CMAG (E:V100) Cmagnet 1 500 4 165 2786 0 1, Xrex/500kW 50 5000 3.11 20 87 195

E:Q101 3Q60 1 1/0 1 105 65 65 1, PEI/20kW 100 200 0.33 7 9 9BND1(E:HV101) EPB 7 500 3 249 1449 0 3, Xrex/500kW 600 2500 24.15 108 676 1217

E:Q102 3Q120 1 1/0 1 215 34 34 1, PEI/20kW 100 200 0.17 3 5 5E:Q103 3Q120 1 1/0 1 231 26.13 26.13 1, PEI/20kW 100 200 0.13 2 4 4

E:HC102 MI Corr. 1 10ga 1 262 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:VC102 MI Corr. 1 10ga 1 264 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:HC103 MI Corr. 1 10ga 1 296 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:VC103 MI Corr. 1 10ga 1 298 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:HC105 MI Corr. 1 10ga 1 489 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:VC105 MI Corr. 1 10ga 1 490 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:HC107 MI Corr. 1 10ga 1 663 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:VC107 MI Corr. 1 10ga 1 664 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:HC108 MI Corr. 1 10ga 1 1119 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:HV108 MI Corr. 1 10ga 1 1120 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:HC110 MI Corr. 1 10ga 1 1237 12 12 MI DipoleTrim 150 12 0.09 1 3 3E:VC110 MI Corr. 1 10ga 1 1239 12 12 MI DipoleTrim 150 12 0.09 1 3 3

Note: Q103, Q104, and Q105 all run at the same current and thus could be run on one PS. MI60N Power Totals: 36 182 1016 1865

Ramp Cycle Time:

CIRCUIT(ACNET if different then CKT

Name)

NUMI



Technical Progress & Status: HV101 PS at MI60

QuickTime™ and aPhoto - JPEG decompressor

are needed to see this picture.

NUMI



Technical Progress & Status: V100, LAM60 and Quad PS MI60

QuickTime™ and aPhoto - JPEG decompressor

are needed to see this picture.

NUMI



Refurbished Magnet Power Supplies:MI62



MI62 Power SuppliesE:Q104 3Q120 1 1/0 1 657 26.13 26.13 1, PEI/20kW 100 200 0.13 2 4 4E:Q105 3Q120 1 1/0 1 633 26.13 26.13 1, PEI/20kW 100 200 0.13 2 4 4

BND2A (E:V104) EPB 2 500 3 640 1449 0 1, Xrex/500kW 200 2500 7.35 33 206 406BND2 (E:V105) B2 5 500 8 603 4254 0 MR - type 470 4250 6.48 227 1512 2799

E:Q106 3Q120 1 1/0 1 512 25.1 25.1 1, PEI/20kW 100 200 0.13 2 4 4E:Q107 3Q120 1 1/0 1 536 26.4 26.4 1, PEI/20kW 100 200 0.13 2 4 4

MI62 Power Totals: 14 268 1732 3219

Ramp Cycle Time:


Name)

NUMI



Refurbished Magnet Power Supplies:Target Hall Service Building



Upstream Service Building and Horn Power SuppliesE:Q108 3Q120 1 1/0 1 514 40.3 40.3 1, PEI/20kW 200 100 0.40 4 11 11E:Q109 3Q120 1 1/0 1 494 47.6 47.6 1, PEI/20kW 200 100 0.48 6 13 13

BND3 (E:V110) EPB 6 500 3 427 1210 0 2, Xrex/500kW 400 2500 13.40 64 375 678BND3A (E:V109) 6-3-120 3 500 2 462 880 0 2, Xrex/500kW 800 1250 21.28 68 596 986

E:Q110 3Q60 1 1/0 1 391 65 65 1, PEI/20kW 100 200 0.33 7 9 9HORN PS Horn 2 stripline 1 300 0 2, PEI/240kW 1000 300 15.00 210 420 420

Upstream Service Building Power Totals: 51 359 1425 2117

Ramp Cycle Time:


Name)

NUMI



Refurbished Magnet Power Supply Regulation

Power supply regulation “requirements” shown below Groundwater irradiation Stability of beam on target

720 Hz line ripple effect on the PS currents is shown in the table below. Need filters on all bend strings

String

Maximum Current of

PS

Peak Current (amps)

Corresponding target RMS in

microns

Allowed Instability in

ppm

Variation due to 720 Hz in ppm with no

Filters

Variation due to 720 Hz in ppm with Filters

Lam60 2500 1445 240 200 298 21V100 5000 2786 200 400 660 25HV101 2500 1449 250 65 214 14V104 2500 1449 75 200 248 21V105 5000 4254 170 60 254 7V109 1250 880 250 200 216 23V110 2500 1210 250 55 207 17

NUMI




Simulations were run for the NuMI V105 string, assuming a constant reference voltage. 5% change in line voltage was easily corrected for at the level of ~25 ppm

with standard voltage regulation. (most variation one would expect) 5% load change (resistance) gave a 240 ppm current variation.

Corresponds to about a 100 C change in the copper in the magnet or the LCW changing 150C Need additional regulation.

HOLEC transductor ($5K/string) & Special FNAL regulation electronics ($5K/string) Both are designed and installed in the Main Injector This combination of electronics would give another factor of 2 120 ppm

NUMI




String

Maximum Current of

PS

Peak Current (amps)

Corresponding target RMS in

microns

Allowed Instability in

ppm

Instability in ppm with Filters & HOLEC & Special Electronics

Extra Factor Needed

(reg/spec)Lam60 2500 1445 240 200 173 0.87V100 5000 2786 200 400 179 0.45HV101 2500 1449 250 65 173 2.65V104 2500 1449 75 200 173 0.86V105 5000 4254 170 60 118 1.96V109 1250 880 250 200 142 0.71V110 2500 1210 250 55 207 3.76

Three strings are still above the required specifications.

So now what?

NUMI




Bandwidth Each string will be tuned for maximum bandwidth.

20 Hz is assumed in the previous calculations, 40 Hz may achieved (but not guaranteed). Gives a factor of 2 in current stability.

Auto-tune Load changes are typically slow changes and thus Auto-tune can correct for these. One could then argue why do you need the extra power supply regulation too?

Auto-tune does not always work.Needs beam and working beam position monitors to work.Assumes next beam pulse like the previous one.

Experience at FNAL where significant beam control is needed says do both. Since the power supply regulation is also driven some by groundwater concerns, we want something that is always working.

NUMI




NuMI bend string power supply regulation levels will be achieved by: Filters on all 7 strings. HOLEC and FNAL Electronics on all 7 strings. Auto-tune. Tuning for maximum bandwidth.

Quadropole power supplies (20 KW PEI’s): Standard regulation is at +/- 0.05% of the maximum current (100 or 200 amps)

Corresponds to up to +/-0.44% variation in operating current. Believed to be sufficient.

Main Injector Trim Magnet power supplies: Standard regulation is at +/- 0.1% of the maximum current (15 amps) Believed to be sufficient.

NUMI



Refurbished Magnet Power SuppliesStatus

Conventional Power Supplies and Cables (Steve Hays, Bob Ducar) MI60 Power Supply Cables:

DC cable pulls complete (except kicker PS), including termination on PS side. AC cabling of power supplies is complete (except kicker PS).

MI62 Power Supply Cables: AC cabling done except for Main Ring PS.

Conventional Power Supplies: 9 refurbished, 4 for Target Hall still need to be refurbished. Ones in existing construction are also in place (except MR PS and Kicker PS).

6 large power supplies, 7 quads and 12 trim power supplies.

Testing of the PS will begin shortly. Filter chokes and the Main Ring PS need to be installed (not behind schedule). Scheduled to happen soon.

All ahead of schedule and within budget.

NUMI



Specifications for the Extraction Kicker

Minimum Integrated Field: 2.24 kG - m

Kick Angle @ 120 GeV: 563 µrad to inside of ring

Field Rise Time (1%-99%): 1.30 µs

Field Fall Time: N/A

Field Flattop Time: 9.78 µs minimum( 6 batches)

Flattop During Pulse: ± 1%

Flattop pulse to pulse: ± 1%

Repetition Rate: 1.9 seconds

Required Charging Time: 1.5 seconds

Magnet Location: Immediately Downstream Q602

Power Supply Location: MI-60 Service Building, South Power Supply Room

NUMI



Kicker Power Supply

Kicker Power Supply - based on MI-52 kicker design (Chris Jensen)

Design modifications to change polarity of supply. (Significant design effort.) Pulse Forming Network driving two (or three series/parallel) magnets in

parallel.

PFN has 32 sections, 33 nF/section, 825 nH/section, 46 kV at minimum kick

Increase coupling of Pulse Forming Network (versus MI-52)

Longer lifetime capacitors for PFN (versus MI-52)

NUMI



Kicker Power Supply

Work on the charging power supply specification is in progress. Drafting is in progress:

Design is ~40% complete Swtich tube enclosure 50% complete.

Some long lead time parts ordered: End of line clipper diodes Controls parts

Kicker controls are 30% complete.

Much of the design is delayed due to magnet design questions (ceramic tube) Much of the kicker construction, machining and purchase orders will be

delayed to FY2003. Due to funding profile with re-baseline Still allows several months of float in the kicker construction, testing and

installation.

NUMI



Other Presentations

Overview and Specifications (Nancy Grossman, 20’) Conventional Power Supplies and Cables (PS) Kicker Power Supply and Cables (PS)

Status of Refurbished PS (Steve Hays, 30’) Status of Kicker PS (Chris Jensen, 30’) Status of Cooling System for PS (Dave Pushka, 30’)

Cost/Schedule/Concerns (Nancy Grossman, 10’)

NUMI



Costs

Refurbished Power Supply & Cable Costs

Total Budget: ~$900K Percent Complete:~48%

Cables, MR PS, regulation/filters, testing

Kicker Power Supply and Cables Based on 2 magnet design…. Total Budget: ~$534K Percent Complete: ~40%

Need new cost estimate based on 3 magnet design - in progress.

NUMI



Schedule & Milestones

2000 2001 2002 2003 2004J FMAMJ J A SONDJ FMAMJ J A S ONDJ FMAMJ J A SONDJ FMAMJ J A SOND J F MAMJ J A S O N D

Kicker PSKicker PS DesignKicker PS Design Complete D

Kicker PS MachiningAssemble Kicker PSKicker PS BuiltInstall and Test Kicker PS at MI60

Conventional PS'sComplete MI60& MI62 DC Cable InstallMR PS Installed in MI62PS Refurbishing CompleteRig PS's into THSB and Run ACComplete THSB DC Cable Install

Beneficial Occupancy of Target HallStart Commissioning

L3M Milestone Design Construct/Modify Install Test D Design Review(of item above "D")

Machining

Assembly

Machining

Assembly

floatfloat

float

L3 Milestone

L3 Working

Plan Date L3 Float Comment

Conventional Magnet PS Refurbishing Complete Dec-01 >12 monthsFinal Kicker PS Design Review Dec-01 ~12 monthsComplete Assembly of Kicker PS Sep-03 ~8 monthsComplete Installation of Kicker PS Feb-04 ~6 months

Float assumes a minimal (somewhat risky) testing period of 3 months.

NUMI



Concerns/Summary

Refurbishing of conventional PS and installation of their AC and DC cables is ahead of schedule and within budget. Regulation requirements are tight, but doable Concerned about integration of the power supply regulation/readout into the

NuMI Beam Permit System

Kicker Magnet Power Supply On schedule and budget so far, but… Will the magnet design change to 3 magnets versus two due to having to use a

shorter ceramic tube?Cost/schedule implications of that are in progress and nearly complete.

NUMI NuMI Magnet Power Supply System WBS 1.1.3 Power Supply System Level 3 Manager Nancy Grossman...

Documents

Transcript of NUMI NuMI Magnet Power Supply System WBS 1.1.3 Power Supply System Level 3 Manager Nancy Grossman...