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Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Radiation tolerance and magnetic field behavior of
CAEN HV and LV boards for LHC experiments
UNI EN ISO 9001 CERT. N. 9105.CAEN
COSTRUZIONI APPARECCHIATURE ELETTRONICHE NUCLEARI Via Vetraia, 11 - I 55049 VIAREGGIO (Italy)Phone: +39.0584.388398 Fax: +39.0584.388959 URL: http://www.caen.it
Giuseppe VitaleGiuseppe Vitale
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Talk summaryTalk summary
SY1527 system overview SY1527 system overview
CMS Muon Chambers suppliesCMS Muon Chambers supplies
(radiation tests)(radiation tests)
DC-DC converter DC-DC converter
(radiation and magnetic field tests)(radiation and magnetic field tests)
ConclusionsConclusions
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
CAEN and COTS CAEN and COTS radiation testsradiation tests
First COTS rad-tolerance tests in ENEA-First COTS rad-tolerance tests in ENEA-Casaccia in ‘98 for CMS ECALCasaccia in ‘98 for CMS ECAL(collaboration with E. Longo, (collaboration with E. Longo, INFN- Roma1)INFN- Roma1)
Tests with p and n in Louvain-la-Neuve, Tests with p and n in Louvain-la-Neuve, CRC in ‘99-’01 for CMS Muon Chambers CRC in ‘99-’01 for CMS Muon Chambers (collaboration with M. De Giorgi, (collaboration with M. De Giorgi, INFN- Padova/5% funding program)INFN- Padova/5% funding program)
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
CMS Muon Drift CMS Muon Drift TubesTubes
overviewoverview ~200,000 Drift Tubes~200,000 Drift Tubes 2x(+4 kV), +2 kV and -2 kV supplies 2x(+4 kV), +2 kV and -2 kV supplies
required for each tuberequired for each tube Floating supplies for on-detector Floating supplies for on-detector
groundinggrounding Remote systemsRemote systems ~ kGauss magnetic ~ kGauss magnetic
field, ~10field, ~101111n/cmn/cm22, , <1 kRad in 10 y <1 kRad in 10 y
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
System for CMS System for CMS Drift TubesDrift Tubes
FLOATING HVFLOATING LV
FLOATING GND 0
FLOATING HVFLOATING LV
FLOATING GND 3
FLOATING HVFLOATING LV
FLOATING GND 2
FLOATING HVFLOATING LV
FLOATING GND 1........
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
CMS CMS drift drift tubes tubes
Master BoardMaster Board
4 primary ch. + 4 primary ch. + communicationcommunication
Provides also Provides also low voltages forlow voltages forremote boardsremote boards
60 boards, 60 boards, 8 mainframes8 mainframesfor the whole for the whole systemsystem
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
CMS CMS drift tubes drift tubes
Remote BoardRemote Board 12 complex ch. + comm. link12 complex ch. + comm. link Allows V and I monitor on each outputAllows V and I monitor on each output 240 boards240 boards p and n irradiation tests @ CRCp and n irradiation tests @ CRC
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Remote BoardRemote Boardirradiation tests Iirradiation tests I
First tests in ‘99 with neutron beam First tests in ‘99 with neutron beam up to 60 MeV, 2*10up to 60 MeV, 2*101111 n/cm n/cm2 2 (CRC)(CRC)
components failurecomponents failure
Board redesigned:Board redesigned:
Tests in ‘00-’01 with 60 MeV Tests in ‘00-’01 with 60 MeV protons up to 7 kRad, protons up to 7 kRad, 2*102*101010 p/cm p/cm22 (CRC) successfully passed(CRC) successfully passed
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Remote BoardRemote Boardirradiation tests IIirradiation tests II
Complete beam scanning over the Complete beam scanning over the whole board area whole board area
9x6 cm9x6 cm22 collimator used, 7 kRad collimator used, 7 kRad dose, dose, 2*102*101010 p/cm p/cm22
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Remote BoardRemote Boardirradiation tests IIIirradiation tests III
V-I monitoring during V-I monitoring during irradiationirradiation
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
CAEN LV solution for CAEN LV solution for LHC experimentsLHC experiments
A 4V 36A DC-DC Converter has A 4V 36A DC-DC Converter has been developed for LHC been developed for LHC applicationsapplications
First prototype successfully First prototype successfully passed all radiation and passed all radiation and magnetic field tolerance testsmagnetic field tolerance tests
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Rad tolerance Rad tolerance testtest
Test in 2001 with 60 MeV protons Test in 2001 with 60 MeV protons up to 7 kRad, 2*10up to 7 kRad, 2*101010 p/cm p/cm2 2 (CRC)(CRC)
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Magnetic field Magnetic field test test setupsetup
Magnet: MNP24-1 at CERN Magnet: MNP24-1 at CERN Bldg. 168Bldg. 168
B: up to 10 kGaussB: up to 10 kGauss
Electronic load: Electronic load: Powertronic Powertronic Mod. 2-9721 80 V 50 AMod. 2-9721 80 V 50 A
Power supply Delta Power supply Delta Elektronika SM7020 70 V 20 AElektronika SM7020 70 V 20 A
Oscilloscope Tektronix 3032Oscilloscope Tektronix 3032
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
DC-DC converterDC-DC convertersimplified modelsimplified model
20 m ohm
20 m ohm
14 m ohm
14 m ohm
V Load
Vset
S+
S-
I Load
I In
V In
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Results (I)Results (I)
B (KG) I Load (A) tf (ns) tr (ns) V in V Load I In (A) P Loss (W) Conv Effic Tot Effic
0 15 30 40 48 4 1,90 6,44 0,73 0,661 15 30 40 48 4 1,9 6,44 0,73 0,662 15 30 30 48 4 1,9 6,44 0,73 0,663 15 20 30 48 4 1,9 6,44 0,73 0,664 15 20 30 48 4 1,9 6,44 0,73 0,665 15 20 30 48 4 1,9 6,44 0,73 0,668 15 20 30 48 4 1,95 6,45 0,71 0,64
B
B field B field to toroid plane to toroid plane
Low power (I load: 15 A)Low power (I load: 15 A)
B up to 8 kGB up to 8 kG
No significant efficiency loss (as expected)No significant efficiency loss (as expected)
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Results (II)Results (II)
B (KG) I Load (A) tf (ns) tr (ns) V in V Load I In (A) P Loss (W) Conv Effic Tot Effic 1 15 20 30 48 4 1,9 6,44 0,73 0,662 15 20 30 48 4 1,9 6,44 0,73 0,663 15 20 30 48 4 1,9 6,44 0,73 0,664 15 10 30 48 4 1,95 6,45 0,71 0,645 15 10 30 48 4 1,98 6,46 0,70 0,636 15 10 30 48 4 2 6,46 0,69 0,637 15 10 30 48 4 2,01 6,46 0,69 0,628 15 10 30 48 4 2,01 6,46 0,69 0,62
Worst case
B
B field B field //// to toroid plane to toroid plane
Low power (I load: 15 A)Low power (I load: 15 A)
B up to 8 kGB up to 8 kG
Efficiency loss due to B : 5%Efficiency loss due to B : 5%
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
Results (III)Results (III)
B (KG) I Load (A) tf (ns) tr (ns) V in V Load I In (A) P Loss (W) Conv Effic Tot Effic
5 36 10 30 48 4 5,7 37,59 0,66 0,5310 36 10 30 48 4 6 37,73 0,63 0,50
Worst case
B
B field B field //// to toroid plane to toroid plane
High power (I load: up to 36 A)High power (I load: up to 36 A)
B up to 10 kGB up to 10 kG
Efficiency loss due to B : 11%Efficiency loss due to B : 11%
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
DC-DC Converter DC-DC Converter control philosophycontrol philosophy
SY
1527
SY
ST
EM
MA
INF
RA
ME
CO
NT
RO
LLO
GIC
V+
V-
S+S-
V+
V-
S+S-
V+
V-
S+S-
DC-DC
DC-DC
DC-DC
48 V
CO
NT
RO
LLO
GIC
V+
V-
S+S-
V+
V-
S+S-
V+
V-
S+S-
DC-DC
DC-DC
DC-DC
48 V
HOSTILE AREA
48 VBACK UPBATTERY
POWER FAILUREINTERRUPT
48 V HIGHPOWERSOURCE
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
AcknowledgementsAcknowledgements
We wish to thank all the following people:We wish to thank all the following people: Radiation tests:Radiation tests:
– E. Longo (INFN Roma 1)E. Longo (INFN Roma 1)
– M. De Giorgi (INFN PD)M. De Giorgi (INFN PD)
Magnetic field tests:Magnetic field tests:
– S. De Pasquale, F. Cindolo, A. Marin (ALICE)S. De Pasquale, F. Cindolo, A. Marin (ALICE)
– A. Fucci, L. Periale (CERN ESS-EP)A. Fucci, L. Periale (CERN ESS-EP)
Como, 15-19 Oct 2001
7th Conf. on Advanced Technology and Particle Physics
ConclusionsConclusions CMS Muon HV Rad tests up to 7 kRad, 2*10CMS Muon HV Rad tests up to 7 kRad, 2*101010 p/cm p/cm22 passed passed
LV Rad tests up to 7 kRad , 2*10LV Rad tests up to 7 kRad , 2*101010 p/cm p/cm22 passed passed
LV Magnetic field tests up to 10 kG passedLV Magnetic field tests up to 10 kG passed
HV/LV channels can be controlled via SY1527 mainframeHV/LV channels can be controlled via SY1527 mainframe
SY1527 can be easily integrated within DCS via OPC SY1527 can be easily integrated within DCS via OPC
controlcontrol