cmmv/94 A

Geneva, February 10, 1955

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

PREELMINARY LIST OF MATERIALS AND EQUIPMENTNEEDED FOR PROTON SYNCHROTRON PROJECT

The figures in this list are a11 approximate and may be changed infuture. They are intended to give to countries and manufacturers anidea of the kind of materials and equipment which will be needed forthe construction of the PS machine and laboratories, and to giverough figures for the amounts of material needed. The design, supervision of construction and final testing of all equipment will be at

tall times the responsibility of the PS Group, actual construction issupposed to be carried out by Industry in the various countries inclose cooperation with PS representatives.

— MAGNET

4)

Iron.- Weight»»35OO tons of low carbon sheet steel. Magneticproperties as SAE 10lO or better. In sheets of about 1 m square,between l and 10 mm thickness for punching or machining to shape.Tolerances on somc_parts of profile to OQO5 mm.

ConductoruEither a) 220 tons of copper in bar about 3 x 2,5 cm or less

with 1 cm diameter cooling hole down centret Barlengths as long as possible.

Or b) llO tons of aluminium in bar about 4 x 3 cm or lesswith 13 mm diameter cooling hole down centre. Barlengths at least 60 m or 120 m in smaller crosssection;

Mgunting frames,- 100 welded steel frames, about 4,50 m long,80 cm wide to support 35 tons on screwjacks at the ends. Estimated weight 2,5 tons each,

Screwjacks.— 300 screwjacks with reduction 1:30 200 for aweight of 10 tons each, 100 for a weight of 20 tons eacht

5) Bogies.— 6 self propelled bogies for transport of magnet unitson rails.

245

CERN/94 A page 2

Cooling System.- Circulating pumps, demincralizing plant, heatexchanger, heat pump to cover the following

Closed circuit dcmineralized water system, 5OO liter/min at;7 kg/cm? pressure, temperatures l7V2° C at input, 2212° C at output extracting 200 KW from magnet. Heat is transferred viaexchanger and heat pump to available water supply at 25° C max.

C0rreqt@gg_Lcnses.- 10 tons of top grade silicon transformersteel in very thin laminations. 40 steel supporting structuresfor these leansesy

Qglg_fgce windings.- About 15 tons of rectangular copper conductorabout V2 cm x 1 cm with hole down centre for cooling. In at least100 m lengths.

- POWER SUPPLIES AND DISTRIBUTION

1. Equipment for the Transformer- and Distribution Substation

Purpose : T0 transform voltage from the 18 kv supply line to the380/220 volt secondary distribution system and to feed differentlocal switching stations in the P.S~ buildings.

Equipment comprises 2

(1) High-vO1mgG side (18 kv)4-6

4-6

3e phase transformers 18 kv/380/220 volts, 600-800 kva,se1f—c00lad.circuit breakers 18 kv for the transformers. Thebreakers may be of the expulsion or compressed air type.A metal-clad draw—0ut construction with built—inpotential- and currcnt—transf0rmers is preferred`Om—l0ad isolating switch 18 kv

(2) Low-v¤1#¤ag@ side (380/220 v)4-6 air breakers 1200/20000 amps4-6 isolating switches 1200 amps

(event. 8-12)Three different variants for the distribution system areshown in the attached diagram.1 Steel—c1ad low voltage panelboard with 15-20 compartments

for feeder circuits 100-500 amps(3) Standby and control bus batteries 110 V and charging device`

Size to be specified later.

2. Equipment for Power Supplies.

2.1 Magnet Power Suppl

Purpose 2 Repetitive power supply to the main magnet. One triangular pulse of peak value 35000 kw and of duration about 2,5 secs,

245

every 5 secondsu Mean power consumed 3500 kw.

Equipment 2(1) High Voltage Switchgear Equipment

Short circuit contactors, grounding resistors, earth leakage

Diagrams of two possible solutions are attached to this note.

Purpose 2 T0 supply 250 kw d.c. for 1 sec every five seconds to

2.3 Power Supply for Lenses and Pcleface Windings

245

0ERN/94 A page 3

Panel board with circuit breaker 6 kv, control and measuringequipment. Event. compressed air plant for circuit breaker.

(2) M0tor—A1ternat0r SetThree·phase induction motor 3300 kw with slip regu1ati0nAMultiphase alternator with flywheel, nominal rating

15000/21000 kva (Lower values for 3—phase bridge connection,higher values for double-three phase connection ofconverter valves), peak 37000/52000 kva (Lower values for3-phase bridge connection, higher values for double-threephase connection of converter va1ves)`

Switchboard consisting of 4-6 panels for regulation andcontrol.

Auxiliary rectifier set 150 kw for exciting the alternator.Accessories for cooling and protection of the m0t0r—altern

ator set.

Vibration damping equipment.(3) Converter Set

Two groups 0f 12 converter elements in d0uble—three phaseor three phase bridge connection, with auxiliary equipment;voltage 10 kv, nominal rating 15000 kw, peak 35000 kw.

Two interphase reactors in case of d0ub1e—three phaseconnection.

Panelboard for measuring and.r@gu1ating devices.(4) Protection Apparatus

protection and surge voltage arrestors.(5) Busbars and Insulators

2.2 Power Supply for R.F. Amplifiers

the R.F. final amplifiers.

Equipment(1) M0t0r—a1ternat0r group, ca. 50 kw, peak 250 kw(2) Rectifier set of the tube or dry—p1ate type

Data to be specified later

Several generators with ratings 50-200 kw will be needed forsupplying the lenses and poleface windings. They will be of theamplidync type, but capacitors, discharged through ignitrons maybe used as well.Definite Data are got yet available.

CERN/94 A page 4

Two or three motor-generator sets with ratings of several 100 kwwill be needed for special purposes One set will be needed soonfor magnet measurements.

RADIO FREQUENCY

1) 16 coaxial ferrite loaded twin RF accelerating cavities of approx.2.5 m length and 40 cm outer diameter, equipped with auxiliarylaminated electr0—magnets (approxc 25 tons of transformer steeland 4 tons of copper conductor) for automatic tuning. The ferritecores will be water cooled.

2) approx. 12 tons 0f ferrite in form of rings of 40 cm outside and20 cm inside diameter, 2 cm thick.Properties of ferrite (approximate values) :Differential permeability at 2.5 Mc/s for vanishingac-field g#{= 310 j 20 ;°

Differential permeability in polarizing d.c. magnetic fieldmf{< 30 Os parallel to R.F» magnetic figld g%¢g $'12

Dielectric constant above 2 MC/s : €j<g15 .Magnetic loss factor at 15 Mc/s and un er saturatedconditions Q/QS = 12) :

tg· QQ Q; O{O6 at vanishing R.F` magnetic fieldtg q{ <; 0.07 at an R.F. magnetic field of 1 Oe %/\\

3) 16 screened RF power amplifier stations, each containing twowater cooled 5 KW power amplifiers together with driving- andpreamplifiers. Input signal approx; 10 volts across 60 0hms&Automatic tuning over the range 0f 2-10 or 3-15 Mc/S, sweptthrough within O.1 sec.

VACUUM SYSTEM

1) About 30 vacuum pumping stations probably comprising 10 cm diam.diffusion pump, cold trap, gate valves, pressure gauges,mecanical pump, control equipment.

2) Vacuum chamber

245

About 6OO m long, elliptical cross section with inside dimensions8 cm x 12 cm. In units 0f various lengths up to 5 meters, with

CERN/94 A page 5

joints, gate valves, pumping ports and other special attachmentsEither stainless steel (wall thickness 1.4 mm) or pyrex (wallthickness 6 mm) or a mixed c0nstructi0n»

3) Refrigerating machines to 0001 the baffles, either to -40?C (011diffusion pumps) or to —lOO°C (mercury diffusion pumps).

LINEAR ACCELERATOR

4)

écgglerator ggi@g 2 Tubular copper "A1varez" resonator structureabout 30 m long (or three, of about 6, 12, 12 m respectively),about 1 m diameter, with copper drift tubes supported along theaxis having provision for very accurate Q“~0.05 mm) and stablealignment, and with both pre—set and serv0—c0ntr0l1ed frequencytuning devicesg All supported inside one or three welded steelvacuum tank(s).

R2E{_3ugE1;g§ s A pulse R.F. generator giving a total peak outputof about 5 MW for 200/qsec every 1 sec at 2OO MHz¤ Consisting ofa quartz—c0ntr0l1ed master oscillator, amplifier chain, and anumber of output stages to feed the resonators above, with servooperated amplitude and phase—shift controls.

Vacuum pumps 2 Probably ten mercury—vap0ur pumps of about 500 mmdiameter, with 1iquid—air traps, and all necessary gauges andcontrols and other auxiliary equipment to exhaust the tanks tohigh vacuumv

I0n—s0urce 2 Pulsed source of protons of at least 10 ma for 10to 20.»2sec, feeding 0.5 MeV highly stabilised high-tension

` accelerator. Focusing etc. system for controlling the protonbeam size and position to fine limits.

SURVEY EQUIPMENT

One specialized theodolite (precision O 3 ccntesimal second), onelevel (precision VQO mm), invar tapes (4 lengths of 100 m — 8 lengthsof 80 m), markers for aligning and checking position of magnets tolimits of about 2/10 mm on a circle of radius 1OO meters, one opticalalignment process, recording comparators sensitive to 1Q/€’f0r lengthvariati ons ~

245

CONTROL EQUIPMENT

CERN/94 A page 6

Switchgear, meters, relays, electronic units, etc. mounted in racksand control desks for remote control all above equipment and of otherlight electrical and electronic equipment for experimental purposes.Cabling, ducts and raceways between apparatus. Intercommunicationand 10ud—cal1 system for whole P.S. building including 80-100 stations,distances up to 300 m. Internal telephone system, 150 extensions.

Safety gates and warning systems, radiation monitoring and recording.Distribution 0f main electricity supplies in Experimental Halls andparts of ring building.

245

CERN/94 A page 7

PRELIMINARY LIST OF MATERIALS AND EQUIPMENT

NEEDED FOR SYNCHRO CYCLOTRON PROJECT

— PUMP MANIFOLD

Material 2 stainless steel, overall dimensions 6000 x 1550 x 910,Wall thickness 2 30 and 60 mm, all parts to be welded vacuum tight,Total weight z 7 t0ns~

— COVER PLATES

Material 2 weldable aluminium alloy, various pieces up to 4600 x 660,Thickness 2 30 mmTotal weight 2 2 tons

ACCELERATING ELECTRODE

5>

7)

Dee system, material s aluminium framework, copperplating 2overall dimensions 3500 x 230, 2300 x 1600 x 150, 2700 x 5000 x 450,2500 x 1200 x 660, 2300 x 1200 x 420, total weight 2 tonskModulator vacuum tank, material 2 stainless steel, overalldimensions 1500 x 2300 x 500, all parts to be welded vacuum tight,total weight 2 tons.

Modulator, material 2 aluminium alloy, overall dimensions200 x 540 x 130, weight 100 kg.Oscillator cubicle, transmitter 100 kW 12 kV, overall dimensions1300 x BOO x BOO, total weight 1 ton.Rectifier 150 kW 12 kV (continuous voltage regulation) filamenttransformer 5 kVA, input voltage 380/220 V, overall dimensions4000 x 2000 X 2000.

Control panel, meters, recorders, relays, signal tubes, electronics,cathode ray tubes, switches, panel size total 4000 x 2000Cocling system, waterflow relays, valves and pipingInterconnccting wiring~

WATERCOOLING SYSTEM

1) High pressure cooling system, standard unit (five), 8 L/sec.primary cooling water, 5 L/scc. sccundary cooling water,capacity 200 kW, degasscr, demineralizer, expansion tank, water

245

CERN/94 A page 8

circulating pumps (two), pressure 10 kg/cm2, motors (two) 5 hp,waterflow relays, valves and tubing, pressure gauges, thermometers.

2) Low pressure cooling system, standard unit (two), 15 L/scc.primary cooling water, 10 L/s0c~ secundary cooling water,capacity 2OO kW, dcgasscr, dcmincralizerexpansion tank, wateré circulating pumps (two) pressure 4 kg/cm , motors (two) 1 hp,waterflow relays, valves and tubing, pressure gauges, thermometers.

3) Control cubicle, overall dimensions 4000 x 2000 x 1500

CONTROL SYSTEM

Control desk, cvcrall size 2000 x 1000 x 1200Control panels, length BOOO height 2000, completely fitted withmeters, recorders, relays, signal tubes, electronic apparatus(oscilloscopes, vacuum meters, amplifiers, scalers), mimicdiagrams, switches·C0ntr0l wiring

INTERCOMMUNICATION SYSTEM

5)

Microphones (tcm)Loudspeakers (twelve)Selector switch panel

wiring

Amp11f1e;~ (two) 15 xvam

— ION SOURCE

Filament supply Motor generator set 5 kW, pulsed anode supply6 Ampv, control panel

AUTOMATIC SUMP DRAIN PUMPING EQUIPMENT

Capacity 5 L/secv

Bw/B

245

`1§§·= gO ro ‘° L`3 ; •—q .. s 3- E D

‘T_ III

3§{=g ·`=%%%¢.

Z L-pg

%-52;$$8uses$2..*3

¤.. O

EZ.-*.5Y; Ego $3... 1:

2:2:5 z黣°§.§:.=:0O0- L $€%¥$:z§£€*£§%

$;é§%%§§$2222z= »••

QQ••O•iII••I•••·—Nr‘7¤1*r|’n5L>f~©U¤¤-(l|#'>Q¥>

. 5j Jg`*<·}·*’.¢.éiJ? Ef g`; -3 5 f ¤ iffel‘¢; " s fg; ·~ " 2 * " F fsx it qiiN; '• ln:$¤°.1\‘:?.°` ? lgm¤

S és?

~~/YQ `

"L Y

5; ·P 4' Y `

s5:;; .{ N E: V

~

~ 5:

`?

.5y `·‘s*;·;

.. 5: Wy

.¢ if4* e J`! 3

'J I i=‘“f’‘?·:·.

,

Qi

L $**9if

1. / 4,_. ` I`

;

,_

»

E, 1

A.C.H¤tn¤ I8 kv

c¤m£CTt0N (F DUSTRIRJTIUN SUBSTATHJH

Coupiing aontactor

On-load isolating switch

{fruit h•l•l¤•r·

‘|’r~•n•for•er IB kv/580/220 v

Mr- cI•··¤u`It breaker

FI9.|. Shplnt and mst cccnanlc arrangement.

Flg.2. Double bus arrsngomont an the lov vo|t¤g• aids.

Er:

F|g.3. Oouble buses with selector disconnecting switches.

N PS. P 14·104»—4 xm

CERN LIBRARIES, GENEVA

CM—POOO74803