SST electrical cable qualification

Simone Paoletti

CERN, 11 July 2006

PSUs will be placed on “balconies” in the experimental cavern (UXC), ~10m (direct) distance from the beams crossing point. From there:

• ~35m of cables will be needed to reach the “patch panel 1” (PP1)

A Cu cable is to be used in this region, in order to have better performances

• ~6m of cables will be needed to reach the tracker internal structures from PP1.

An Al cable is to be used in this region, in order to keep low the material budget.

Routing of the Power in the SST

“Balconies”

PSU Crates

~ 35 m

Cu Cable- COST and PERFORMANCE -

Tracker structures

~ 6 m

Detector volume

Tracker “Patch Panel 1”

Al Cable- MATERIAL BUDGET -

Power cables will be used also to route signals from T and H probes inside the tracker

short ( 6m) cables

Short CTRL Cables

NameProducingCompany

Connect.Company

Prod.Status

TotalNeeded

TotalINFN Order Connectors

PP1 end detector endDiameter (mm)

TOB ctrlpwrs1 Habia Adapt on-going 92 FM7W2 (m) custom 4.4

TIB/TID Cu-6m-cntrl Novacavi Adapt on-going 120 130 FM27W2 (m) FM27W2 (f) 10

TEC ctrlpwrs1 Habia Adapt done 144 FM7W2 (m) custom 4.4

TEC TEC_PP1cc Novacavi Adapt ? prototyping 144 160 FM7W2 (m) FM7W2 (f) 5.40-6.00

Short Power Cables

Name Producing Connect. Prod. Total Total Connector (m/f = male/female) DiameterCompany Company Status Needed INFN Order PP1 end detector end (nominal-max,mm)

TOB CAB48 Habia Adapt on-going 180 FM36W4 (m) custom 9.6 (nominal)CAB36 Habia Adapt on-going 508 FM36W4 (m) custom 9.5 (nominal)

688

TIB/TID CAB60 Habia Adapt on-going 488 530 FM36W4 (m) FM13W3 (f) 10.6 (nominal)

TEC CAB60 Habia Adapt done 192 FM36W4 (m) custom 10.6 (nominal)CAB48 Habia Adapt done 272 FM36W4 (m) custom 9.6 (nominal)CAB36 Habia Adapt done 304 FM36W4 (m) custom 9.5 (nominal)

768TEC TEC_PP1 Novacavi Adapt ? prototyping 768 170 FM36W4 (m) FM36W4 (f) 9.95-10.5

long ( 30 m) cables

Long Power Cables(LIC cables)

Name Producing Connect. Status Total Total Connector (m/f = male/female) Diameter EDMS PRR doc EDMS Safety docCompany Company Needed INFN Order pp1 end PS end (nominal-max.,mm)

TOB/TEC LIC11v3-TOB/TECElettronica ConduttoriThermo Eng. on-going 1456 2100 FM36W4 (f) bajonet (m) 12.00 max CMS-G-RR-0305 CMS-GS-TR-0131

TIB/TID LIC11v1-TIB/TID Elettronica ConduttoriThermo Eng. on-going 488 FM36W4 (f) bajonet (m) 12.00 max CMS-G-RR-0306 CMS-GS-TR-0132

Power Long Control Cables

PLCCName Producing Connect. Status Total Total Connector (m/f = male/female) Diameter EDMS PRR doc EDMS Safety doc

Company Company Needed INFN Order pp1 end PS end (nominal-max.,mm)

TOB PLCC_TOB Novacavi Thermo Eng. Starting 92 102 FM7W2 (f) FM17W2 (m) 11.40-11.50 CMS-G-RR-0307 CMS-GS-TR-0133

TEC PLCC_TEC Novacavi Thermo Eng. Starting 144 160 FM7W2 (f) FM17W2 (m) 7.40-7.50 CMS-G-RR-0308 CMS-GS-TR-0134

TIB/TID PLCC_TIB/TID Novacavi Thermo Eng. on-going 120 130 FM27W2 (f) FM17W2 (m) 11.40-11.50 CMS-G-RR-0309 CMS-GS-TR-0135

Quality Control

• All cables are checked upon reception before being used for the experiment– LIC, PLCC, TIB/TID short cables automatic test setup

checking connections, isolation and capacitance– TEC/TOB short cables Lyon box checking connections and

isolation.

• Each cable is checked at production by the connectorising firm:– QC checks for PLCC and LIC after connectorisation were

agreed with us.

• For the LIC cables additional QC tests are performed by the cable producing firm, before connectorisation, as specified in the tender.– Standard qualification tests on all produced spools– Sampling destructive tests

The LIC cable

The LIC cableTwo versions:• v1 for TIB/TID• v3 for TEC/TOB• the connectorisation of he two

versions is compatible (TEC/TOB may use LIC_v1 and vice-versa)

“LIC V1” “LIC V3”

All relevant documentation (design, tests, safety) is on EDMS: https://edms.cern.ch/

First steps of PRR passed: • the LIC cable was approved for safety• we are allowed to buy the cables• still missing cable lengths definition inside

CMS cabling database

LIC QC before connectorisation

• The LIC is produced by Elettronica Conduttori (Volpiano, TO)• Each production lot is certified by the firm according to contract and

to CERN-required specifications:– IEC 60317-0-1, IEC 60317/51, CEI 20-11, CEI 20-35, IEC 60332-1,

73/23/CEE, 93/68/CEE, 2002/95/CEE, TECH SPEC. LIC V1, LIC V3• The manufacturer performs the following isolation tests, on each

spool, before cutting to individual lengths:– 3000 Vcc (between twisted pairs)– 2000 Vcc (twisted versus shield braid)– 3000 Vcc (twisted versus enamelled)– 250 Vcc (enamelled vs enamelled)– 250 Vcc (enamelled vs shield braid)

• The certified working voltages are:– 30 V for the enamelled wires (LV lines)– 600 V for the twisted pairs (HV, LV senses and T,H probes)

Production lot certificate

Electrical test results

LIC QC: destructive tests

• Additional destructive tests are performed on each production lot, on a sample basis, in order to spot possible mechanical problems– These tests are not addressing any weakness specific of the LIC

cable, but were required as a safety measure, since the LIC cable design is new (use of enamel wire).

• Traction– 820 N / 60 s

• “U” bends– 200 cycles (Rbend = 75 mm) + 5 cycles (Rbend = 20 mm)

• Crushing– 150 kg on 80 mm length

• The electrical properties of the cable samples are measured after the destructive tests and have to be good within large safety margins

Traction test

Crush test

Bending test

Bending radius• The LIC is certified for Rbend = 8cm

– Rule of thumb (“average” manufacturer): Rbend ~ 10 x ø• The QC procedure was agreed with the manufacturer in

order to allow us to lower Rbend in a few difficult installation points – Once bent below 8 cm, any further movement of the cable is

strongly discouraged– We have to keep Rbend as large as we can during the installation

• It is a single-pose cable– the characteristics and costs of movement cables are different

(cost higher by ~ factor 3)– we can re-use this cable a limited number of times, provided it is

adequately handled and never bent below 8 cm– some bad handlings which can damage the cable (from my

personal experience):• drop from height while fastened at the bottom• wrong re-winding into drum

Outer jacket

• The jacket material is ECCOH 3140 LS0H polyolefin compound– satisfies CERN IS23 safety rules

(fire and radiation resistance)– similar compound (Megolon S-

304) used in previous LIC preproduction

– polyolefin compounds used by several sub-detectors

• The jacket is 1mm thick– adequate to the cable

dimensions – constraints:

• occupancy on cable trays• bending radius• power consumption

Connectorisation• Connectorisation technique for enamel wires developed:

– bath in tin/lead at 390°C• initial technical problems due to the constrained

dimensions in PP1 solved• molding technique developed using polyurethane

(Rampf’s RAKO-PUR)

PSU end PP1 end

insertion key

61 2 3 4 5 7 8

9 131110 12 14 15

16 201817 19 21 22 23 24 282625 27 29 30 31 32

A4A3A2A1

S250+ S250- T1+ T1-

T2-T2+ T3-T3+

Vb

ias 1

Vb

ias 4

Vb

ias 7

Vb

ias 8

Vb

rtn 1

Vb

rtn 2

Vb

ias 2

Vb

ias 6

S125+ S125-

DRAIN 1GND V250 V125

VISTA LATO SALDATURE

Vb

ias 3

Vb

ias 5

DRAIN 2

Connectorisation schemes

VISTA LATO PIN

CVbias 4

Vbias 3

Vbias 2

Vbias 1

S125-S125+ S250+

S250-

Vbias 5

Vbias 6

Vbias 8

Vbias 7

T2-T2+

Vbrtn 2 Vbrtn 1

T1-T1+

DRAIN 1

T3- T3+

E

I

OM

G

LK

P

F

J

A

D

H

N

T U

V YW X

B

R S

V250V125

GND

• Continuity and isolation tests performed at the firm using a programmable tester machine:– SCHAFFNER ELECTROTEST TEST SYSTEM W427

• More refined tests (using the same instrument) performed at CERN upon cable reception:– “four point” R measurement allows to monitor the quality of connections– capacitance measurements ensure the correct twisted pair assignments

Tests performed after connectorisation

Test performed by firm

Test performed at CERN:SCHAFFNER ELECTROTEST TEST SYSTEM W427------------------------------------------

Programma di test: LIC versione 3 (35 metri)Nome del file : LIC_V3-35mtData/ora : 06/06/2006 15.00.55Seriale : 213

Test APERTI Parameter:R=8.500 Ohm I=200.0mA Tmin=2.000ms Tmax=2.000ms

Test CORTI Parameter:R=100.0kOhm U=20.00V Tmin=5.000ms Tmax=5.000ms

Test HV-DC Parameter:R=1.500GOhm U=1000V Tempo salita=1000V/Ms Tmin=500.0ms Tmax=200.0ms

header

Test CORTI----------R=100.0kOhm U=20.00V Tmin=5.000ms Tmax=5.000msNCL S >100.00MOhm NCL R 32.00MOhm NCL B 6.106MOhm NCL P 61.54MOhm NCL X >100.00MOhm NCL Y >100.00MOhm NCL V >100.00MOhm NCL W 100.00MOhm NCL T >100.00MOhm NCL U >100.00MOhm NCL N >100.00MOhm NCL O >100.00MOhm NCL L >100.00MOhm NCL M >100.00MOhm NCL J >100.00MOhm NCL K >100.00MOhm NCL H >100.00MOhm NCL I 100.00MOhm NCL F >100.00MOhm NCL G >100.00MOhm NCL D >100.00MOhm NCL E >100.00MOhm NCL A >100.00MOhm NCL C 100.00MOhm NCL FM36-CASE >100.00MOhm NCL FM36-31 11.59MOhm NCL FM36-30 100.00MOhm NCL FM36-27 >100.00MOhm NCL FM36-12 >100.00MOhm NCL FM36-9 100.00MOhm NCL FM36-10 >100.00MOhm NCL FM36-8 >100.00MOhm NCL FM36-4 100.00MOhm

tests against shorts (20V)

Test APERTI Parameter:R=8.500 Ohm I=200.0mA Tmin=2.000ms Tmax=2.000ms

Conn. J FM36-2 4.770 Ohm [7] T2-Conn. K FM36-1 4.775 Ohm [8] T2+Conn. U FM36-3 4.770 Ohm [9] T3+Conn. C FM36-6 4.750 Ohm [10] Vbias4Conn. O FM36-5 4.745 Ohm [11] Vbias1Conn. H FM36-7 4.845 Ohm [12] Vbias7Conn. G FM36-11 4.712 Ohm [13] Vbrtn1Conn. A FM36-14 4.772 Ohm [14] Vbias5Conn. I FM36-13 4.850 Ohm [15] Vbias2Conn. N FM36-15 4.825 Ohm [16] Vbias8Conn. Y FM36-20 4.715 Ohm [17] Sense250-Conn. X FM36-19 4.760 Ohm [18] Sense250+Conn. V FM36-22 4.735 Ohm [19] Sense125-Conn. W FM36-21 4.717 Ohm [20] Sense125+Conn. L FM36-24 4.932 Ohm [21] T1-Conn. M FM36-23 4.695 Ohm [22] T1+Conn. F FM36-26 4.727 Ohm [23] Vbrtn2Conn. T FM36-25 4.762 Ohm [24] T3-Conn. E FM36-28 4.797 Ohm [25] Vbias3Conn. D FM36-29 5.313 Ohm [26] Vbias6

Test APERTI Parameter:R=600.0mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. FM36-CASE FM36-case 385.5mOhm [29] CaseConn. FM36-16 FM36-17 389.1mOhm [30] Drain2Conn. FM36-16 FM36-18 422.9mOhm [30] Drain2Conn. FM36-16 FM36-31 557.0mOhm [30] Drain2Conn. FM36-16 FM36-32 582.4mOhm [30] Drain2

Test APERTI Parameter:R=60.00mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. B FM36-A1 47.91mOhm [35] GND

Test APERTI Parameter:R=80.00mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. S FM36-A2 64.94mOhm [37] V250

Test APERTI Parameter:R=170.0mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. R FM36-A3 161.9mOhm [39] V125

Test APERTI Parameter:R=300.0mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. P FM36-A4 231.9mOhm [41] Drain1

continuity tests (tw pairs)

drains

LVs

DC-NCA J 17.91GOhm [47] T2-DC-NCA K 14.58GOhm [48] T2+DC-NCA U 99.34GOhm [49] T3+DC-NCA C 17.21GOhm [50] Vbias4DC-NCA O 14.28GOhm [51] Vbias1DC-NCA H 129.6GOhm [52] Vbias7DC-NCA G 159.9GOhm [53] Vbrtn1DC-NCA A 24.26GOhm [54] Vbias5DC-NCA I 20.46GOhm [55] Vbias2DC-NCA N 7.883GOhm [56] Vbias8DC-NCA Y 16.13GOhm [57] Sense250-DC-NCA X 12.66GOhm [58] Sense250+DC-NCA V 15.16GOhm [59] Sense125-DC-NCA W 12.02GOhm [60] Sense125+DC-NCA L 11.72GOhm [61] T1-DC-NCA M 9.986GOhm [62] T1+DC-NCA F 22.39GOhm [63] Vbrtn2DC-NCA T 18.43GOhm [64] T3-DC-NCA E 155.6GOhm [65] Vbias3DC-NCA D 130.0GOhm [66] Vbias6

Test HV-DC Parameter:R=10.00MOhm U=200.0V Tempo salita=500V/s Tmin=1.000 s Tmax=200.0msDC-NCA B 419.7MOhm [69] GNDDC-NCA S 511.4MOhm [70] V250DC-NCA R 1.430GOhm [71] V125

Test HV-DC Parameter:R=1.500GOhm U=1000V Tempo salita=1000V/Ms Tmin=500.0ms Tmax=200.0msDC-NCA FM36-4 20.38GOhm [74] EmptyDC-NCA FM36-8 22.76GOhm [75] EmptyDC-NCA FM36-9 21.65GOhm [76] EmptyDC-NCA FM36-10 22.09GOhm [77] EmptyDC-NCA FM36-12 22.74GOhm [78] EmptyDC-NCA FM36-27 22.18GOhm [79] EmptyDC-NCA FM36-30 22.18GOhm [80] Empty

C-Twist T+01/T-01 FM36-23 FM36-24 3.029nF [84]C-Twist T+02/T-02 FM36-1 FM36-2 2.890nF [85]C-Twist T+03/T-03 FM36-3 FM36-25 3.327nF [86]C-Twist Vbias1/Vbias4 FM36-5 FM36-6 3.256nF [87]C-Twist Vbias2/Vbias3 FM36-13 FM36-28 3.417nF [88]C-Twist Vbias5/Vbias6 FM36-14 FM36-29 3.313nF [89]C-Twist Vbias7/Vbias8 FM36-7 FM36-15 3.393nF [90]C-Twist Vbrtn1/Vbrtn2 FM36-11 FM36-26 3.190nF [91]C-Twist S250+/S250- FM36-19 FM36-20 3.593nF [93]C-Twist S125+/S125- FM36-21 FM36-22 3.464nF [94]C-Twist Drain1/GND FM36-A4 FM36-A1 60.03nF [96]C-Twist Drain2/GND FM36-31 FM36-A1 28.08nF [97]

Risultato del Test-------------------------------------Test APERTI : B U O N OTest CORTI : B U O N OTest COMPONENTI : B U O N OTest HV-DC : B U O N OTest HV-AC : non attivoTest Shield : non attivoMessaggi errore : B U O N O

isolation tests (1000V) one vs all others

twisted pair capacitance

m /wire 31length [m] 50R connection [m ] 5

RTN 2.5 1.25N wires 25 18 7

R wires [m ] 62 86 221Total R 67 91 226

First LIC_V1 sample

first 35m LIC prod. deliveriesm /wire 32.24length [m] 35R connection [m ] 5

RTN 2.5 1.25N wires 25 18 7

R wires [m ] 45 63 161Total R 50 68 166

Summer !

Experience with LIC cables

• LIC cable prototypes have been used to power our detectors with our PS system since more than three years

• Around 270 LIC cables are in use: – 2003/2004 prototypes– 2005 pre-production– 2006 first deliveries

• Their performance is good– several of them installed a lot of times and survived bad handlings:

• test beams• Louvain irradiation tests• PSU test setup

• Few problems reported so far:– regarding damage of outer jacket (de-coloring, perforation or peeling)

• Proper handling procedure, according to the cable specs, has to be adopted and trained manpower has to handle the cables:– never bend below nominal bending radius– never pull over sharp edges– use some specific (slippery) product to de-install the cable

• If not, we don’t have cables for TIF ! (or for CMS !)

Experience with connectors• One weakness of the FM36W4 (pp1)

connectorisation spotted after first prototypes

– occasional contact of LVs, now solved• Pins may occasionally get pushed inside

the bajonet connector– it’s not a damage: they can be simply

repositioned with tweezers• Occasional difficulty in plugging the cable

into the PSU back-boards– limited experience with this kind of problems:

too few and incomplete problem reports– from personal experience: it’s better to follow

the natural torsion of the cable. Do not try to exercise too much force in de-torsion

• the thicker 40A pins may get distorted• not a damage: the pins get back into position

when the torsion force is released

• General rule of thumb: – do not exaggerate with the force applied in

connecting the cables– never try to force the connector’s guide

insertion key

Power long control cables

The PLCCs• 20 PLCC_TIB/TID + 20 PLCC_TOB prototypes produced

in 2005– currently used in integration setups and MTCC

• production with final connectors just started– PLCC_TIB/TID the first one to be produced

• Electrical tests (same kind as for LIC) performed both by connectorising firm and at CERN, upon reception

PLCC

TEC TIB/TIDTOB

20+20 PLCC test production

PLCC_TIB/TID

(151 + Rconn. expected)

(92 + Rconn. expected)

PLCC_TIB/TID

Short cables

TIB/TID cables

• Electrically tested (opens and shorts) at the connectorising firm (ADAPT)

• Tested upon reception at CERN with the usual cable testing machine.

4 HVbias + 2 RTN

LV senses

(Habia)

CAB602 twp senses

12 wires for T,H probes

Section: 2.5 mm2

(Novacavi)

Cu–6m-ctrl

typical CAB60 testSCHAFFNER ELECTROTEST TEST SYSTEM W427------------------------------------------Programma di test: CAB 60Nome del file : CAB_60Data/ora : 10/05/2006 14.26.14Seriale : 249-560

Test APERTI Parameter:R=1.500 Ohm I=200.0mA Tmin=2.000ms Tmax=2.000ms

Test CORTI Parameter:R=100.0kOhm U=20.00V Tmin=5.000ms Tmax=5.000ms

Test HV-DC Parameter:R=1.500GOhm U=1000V Tempo salita=1000V/Ms Tmin=500.0ms Tmax=20.00ms

Test CORTI----------R=100.0kOhm U=20.00V Tmin=5.000ms Tmax=5.000msNCL FM36-CASE >100.00MOhm NCL FM36-01 >100.00MOhm NCL FM36-02 >100.00MOhm …NCL FM36-A2 >100.00MOhm NCL FM36-A3 >100.00MOhm

Conn. FM36-19 FM13-05 1.095 Ohm [7] Sense250+Conn. FM36-20 FM13-04 1.205 Ohm [8] Sense250-Conn. FM36-21 FM13-10 1.007 Ohm [9] Sense125+Conn. FM36-22 FM13-09 1.028 Ohm [10] Sense125-Conn. FM36-05 FM13-01 1.083 Ohm [11] Vbias1Conn. FM36-28 FM13-02 1.092 Ohm [12] Vbias2Conn. FM36-07 FM13-07 1.066 Ohm [13] Vbias3Conn. FM36-29 FM13-06 1.092 Ohm [14] Vbias4Conn. FM36-11 FM13-08 1.044 Ohm [15] VbRTN1Conn. FM36-26 FM13-03 1.074 Ohm [16] VbRTN2

continuity tests(cut at R = 1.5 )

isolation tests(1000 V)

Test APERTI Parameter:R=800.0mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. FM36-CASE FM36-case 368.9mOhm [19] CASE-FM36Conn. FM36-16 FM36-17 385.9mOhm [20] Drain2Conn. FM36-16 FM36-18 386.9mOhm [20] Drain2Conn. FM36-16 FM36-31 636.5mOhm [20] Drain2Conn. FM36-16 FM36-32 642.0mOhm [20] Drain2Conn. FM36-16 FM13-CASE 570.1mOhm [20] Drain2Conn. FM36-16 FM13-case 566.8mOhm [20] Drain2

Test APERTI Parameter:R=100.0mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. FM36-A4 FM13-CASE 74.84mOhm [24] Drain1Conn. FM36-A3 FM13-A3 84.08mOhm [25] V125

Test APERTI Parameter:R=60.00mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. FM36-A2 FM13-A2 51.13mOhm [27] V250

Test APERTI Parameter:R=40.00mOhm I=200.0mA Tmin=2.000ms Tmax=2.000msConn. FM36-A1 FM13-A1 32.78mOhm [29] GND

DC-NCA FM36-19 103.2GOhm [33] Sense250+

80 m expected

53 m expected

33 m expected

DC-NCA FM36-20 23.26GOhm [34] Sense250-DC-NCA FM36-21 25.16GOhm [35] Sense125+DC-NCA FM36-22 93.02GOhm [36] Sense125-DC-NCA FM36-05 85.11GOhm [37] Vbias1DC-NCA FM36-28 >4000GOhm [38] Vbias2DC-NCA FM36-07 21.51GOhm [39] Vbias3DC-NCA FM36-29 26.89GOhm [40] Vbias4DC-NCA FM36-11 85.11GOhm [41] VbRTN1DC-NCA FM36-26 85.11GOhm [42] VbRTN2DC-NCA FM36-01 13.26GOhm [43] EmptyDC-NCA FM36-02 186.0GOhm [44] EmptyDC-NCA FM36-03 85.11GOhm [45] EmptyDC-NCA FM36-04 85.11GOhm [46] EmptyDC-NCA FM36-06 164.9GOhm [47] EmptyDC-NCA FM36-08 10.06GOhm [48] EmptyDC-NCA FM36-09 9.662GOhm [49] EmptyDC-NCA FM36-10 82.05GOhm [50] EmptyDC-NCA FM36-12 85.11GOhm [51] EmptyDC-NCA FM36-13 85.11GOhm [52] EmptyDC-NCA FM36-14 421.1GOhm [53] EmptyDC-NCA FM36-15 11.78GOhm [54] EmptyDC-NCA FM36-23 8.806GOhm [55] EmptyDC-NCA FM36-24 14.71GOhm [56] EmptyDC-NCA FM36-25 145.5GOhm [57] EmptyDC-NCA FM36-27 85.11GOhm [58] EmptyDC-NCA FM36-30 85.11GOhm [59] Empty

C-Twist S250+/S250- FM36-19 FM36-20 380.7pF [61]C-Twist S125+/S125- FM36-21 FM36-22 376.7pF [62]C-Twist Drain/GND FM13-CASE FM13-A1 1.767nF [63]

Risultato del Test-------------------------------------Test APERTI : B U O N OTest CORTI : B U O N OTest COMPONENTI : B U O N OTest HV-DC : B U O N OTest HV-AC : non attivoTest Shield : non attivoMessaggi errore : B U O N O------------ B U O N O ------------

isolation tests

• The cable material is qualified at Habia: visual inspection, mechanical and geometrical checks, resistance measurements

• The cables are tested at ADAPT:1. mechanical and geometrical checks2. pin-to-pin continuity test and short

check;3. hv test at 1KV (absorbed current

and insulation among HV wires);

• visual inspection and electrical tests (Lyon test box) at CERN

1. pin-to-pin continuity test and short check;

2. hv test at 600V (absorbed current and insulation among HV wires);

TEC/TOB cables

• CAB60, CAB48, CAB36 and ctrl-pwr-s1

(Habia)

(information from G. Magazzu`)

Data base

• Each cable used in CMS has to appear in the cabling database:• start point• end point• ID

• Each cable is labeled by firm after connectorisation– type, date, length, serial number

• We intend to store general cable information (production date, length, some of test results) in our construction database– part of the structure already defined

• Cannot glue multiple labels on the same cable:– the IDs assigned by the cabling database have to match those of the

construction database, and possibly resemble the serial number assigned by the firm.

• Two-D labels will be used for short cables• We have to think carefully to which labels, and where, should be

stuck on long (LIC and PLCC) cables.

Further installation issues• Do we check cables once they are installed in P5 ?

– topic still under discussion– short cables: no way, I guess– long cables:

• electrical tests with cable tester from the balcony (short pairs of cables at PP1)

• test complete LV and HV chain after the cable is plugged into the PSU, using a test box in PP1

– we may benefit from the monitoring provided by the PP1 interconnect board– is the installation scenario allowing to use powered racks ?

• Can we repair cables after installation ?– PP1: forget it– balcony: it might be possible (depends on kind of damage)

• Cable spares:– we can foresee producing some spares– we are heavily limited by space on cable trays– have still to define the final cable distribution– “hope” to place one or two spares per PP1

• at least PLCC spare