Upload
nancy-greer
View
225
Download
4
Tags:
Embed Size (px)
Citation preview
SSD Status Before and After Dessica Installation
Massimo Venaruzzo 04/10/2012
SSD – EN/CV Meeting
Outline
• SSD General Status Before Dessica• Humidity Trends Before Dessica• Half ladder leackage current before Dessica• SSD General Status with Dessica• Humidity Trends with Dessica• Half ladder leackage current with Dessica• Measurements performed by SSD people• Conclusions
3
SSD General Status – Before DessicaOff to prevent trips11/144 (~8%)
High temp Noise in the DQMFluctuating current High current
Humidity Trends Before Dessica
CR5
SSD-C (detector entrance)
Humidity Trends Before Dessica
SSD-A (detector exit)
Half ladders leakage current before Dessica - 1
A607 (off)
C609 (off)
Half ladders leakage current before Dessica - 2
A624 (kept on and used as reference)
C601 (kept on and used as reference)
8
SSD General Status – With DessicaCurrent still too high
High temp High current
Humidity Trends With Dessica
Dessica Startup
Dessica alarm test P2 Power Cut
SSD T Stable ~19.9 – 20.1 deg
CR5
SSD-C
Humidity Trends With Dessica
SSD-ADessica Startup
Techincal Stop 3
Half ladders leakage current with Dessica - 1
A607
C609
Half ladders leakage current with Dessica - 2
A624
C601
Critical Ladder Currents: Overall situation
Ladder P HV (uA) (Fisair)
N HV (uA) (Fisair)
P HV (uA) (Dessica)
N HV (uA) (Dessica)
Variation
A601 350 350 165 167 - 53 %
A607 300 300 259 263 - 13 %
A609 290 290 200 203 - 45 %
A610 320 320 197 200 - 37.5 %
A615 300 300 197 200 - 33 %
A616 150 150 90 90 - 40 %
A622 450 450 267 268 - 40 %
A624 215 215 132 129 - 39.5 %
A636 180 180 145 142 - 19.4 %
C601 420 420 298 298 - 29 %
C607 150 150 97 97 - 35 %
C609 340 340 230 230 - 32.4 %
C610 400 400 230 290 - 42.5/27.5 % C615 90 90 68 68 - 24.4 %
C617 80 80 66 66 - 17.5 %
C622 250 250 164 164 - 34.4 %
C624 80 80 47 47 - 41.3 %
C632 310 350 173 236 - 44.2/32.6 %
C634 120 120 56 56 - 53.3 %
C636 150 150 90 90 - 40 %
Off
Measurements performed by SSD - 104/09, 16:30 - Dessica started with this setpoints:
- RH: 15% (--> 2.03 g/kg)- T: 19 deg (measured near the machine ~18.3 deg, decreased to ~16.6 in the following days)- Flow measured ~314 m^3/h that increased to ~330 m^3/h in the following hours- P measured ~1.5 kPa
- SSD C2-sensor RH (at the detector entrance): ~26%- SSD A -sensor RH (at the detector exit) : ~26%- A624: 195 uA- C601: 400 uA
07/09, 09.30 - Flow reduced to ~ 300 m^3/h, other parameters fixed
- P measured: 1.26 kPa- SSD C2-sensor RH: ~20.3%- SSD A -sensor RH: ~21.5%- A624: 180 uA- C601: 375 uA
10/09, 09.30 - RH setpoint reduced to 10% (-->1.35 g/kg), other parameters fixed
- SSD C2-sensor RH: ~16%- SSD A -sensor RH: ~18%- A624: 160 uA- C601: 332 uA
11/09, 09.30 - Flow reduced to ~ 250 m^3/h (the nominal one), other parameters fixed
- P measured: 0.864 kPa- SSD C2-sensor RH: ~16.8%- SSD A -sensor RH: ~17.9%- A624: 157 uA- C601: 327 uA
Measurements performed by SSD - 2
Cleaness measurements≥0,5μm particles/m³ reduction
CR5 area Fisair outletDessica-CR5 %
2531 1 54 894.346 353 19.081 98ISO 8 ISO 4 ISO 6
meterper m³class
Flow reduction ~ 78.3%
Flow reduction ~78.5%
Measurements performed by SSD - 3
100 150 200 250 300 350 4000
5
10
15
20
25
30Dessica air speed near ITS
EN-CV meter
Utrecht meter
Flow [m³/h]
air s
peed
[km
/h]
240 260 280 300 320 340 3600
100
200
300
400Dessica air flow near ITS
Sept 2012
Jan 2012
Sept 2010
Flow Dessica [m³/h]
Flow
ITS
[m³/
h]
Flow reduction 2010-2012~ 61%
flow [m³/h] total flow
[m³/h]ITS env. SPD SDD SSD
Blue BLUEtranspar
ent black 10 3 0 0 13
flow [m³/h] total flow [m³/h]ITS env. SPD SDD SSD
Blue BLUEtranspar
ent black 26 7 0 15 49
flow [m³/h] total flow [m³/h]ITS env. SPD SDD SSD
Blue BLUEtranspar
ent black 36 10 0 18 64
flow [m³/h] total flow [m³/h]ITS env. SPD SDD SSD
Blue BLUEtranspar
ent black 42 12 0 23 76
Dessica flow 150 m³/h
Dessica flow 350 m³/h
Dessica flow 300 m³/h
Dessica flow 250 m³/h
Flow reduction ~ 91%
Flow reduction ~ 80%
SSD – C side (detector entrance) during SSD measurements
Fisair machine
Dessica Startup
T=19deg, RH set = 15%, Flow ~330 m3/h
Dessica alarm test
Flow 300 m3/h, rest fixed
Flow 250 m3/h, rest fixed
RH 10%, rest fixed
SSD T Stable ~19.9 – 20.1 deg
Conclusions• SSD condition significantly improved:
– RH stable at the requested values– Critical half-ladders current decrasing (a complete stabilization needs
more working weeks at the proper RH conditions)
• Further interventions– Leak check then redo the flow measurements– Pipe insulation (to gain in terms of air temperature at the detector),
• Dessica settings to be kept: 250 m3/h, RH 10% (1.35 g/kg)
BackUp
SSD Humidity Sensor
04 September – 11 September
Humidity in CR5
SSD – C side (detector entrance)
Fisair machine
Dessica Startup
T=19deg, RH set = 15%, Flow ~330 m3/h
Dessica alarm test
Flow 300 m3/h, rest fixed
Flow 250 m3/h, rest fixed
RH 10%, rest fixed
SSD – A side (detector exit)
Dessica Startup
RH 10%, rest fixed
Fisair machine
Flow 250 m3/h, rest fixed
Flow 300 m3/h, rest fixed
Flow Measurements
FISAIR FLOW
setting of supply Air speed in tube [km/h] flow[m³/h] part of demand [%]
total flow
[m³/h][m³/h] ITS env. SPD SDD SSDITS env. SPD SDD SSD
ITS env. SPD SDD SSD
Blue BLUEtranspare
nt black Blue BLUEtranspa
rentblac
k Blue BLUEtranspar
entblac
k inside L3 22 22 0 25 44 12 0 23 44 ?? 0 45 79
Jan 2012 - FISAIR flow 250 m³/h
setting of supply Air speed in tube [km/h] flow[m³/h] part of demand [%]
total flow
[m³/h][m³/h] ITS env. SPD SDD SSDITS env. SPD SDD SSD
ITS env. SPD SDD SSD
Blue BLUEtranspare
nt black Blue BLUEtranspa
rentblac
k Blue BLUEtranspar
entblac
k inside L3 36 36 0 38 72 20 0 34 72 ?? 0 69 127
Sep 2010 - FISAIR flow 250 m³/h
DESSICA FLOWDessica flow 150 m³/h mearured on 19-09-2012 by Mino and Grazia
setting of supply Air speed in tube [km/h] flow [m³/h] total flow [m³/h][m³/h] ITS env. SPD SDD SSD ITS env. SPD SDD SSD
Blue BLUE transparent black Blue BLUEtranspare
nt black inside L3 5 5 0 0 10 3 0 0 13
Dessica flow 250 m³/h
setting of supply Air speed in tube [km/h] flow [m³/h] total flow [m³/h][m³/h] ITS env. SPD SDD SSD ITS env. SPD SDD SSD
Blue BLUE transparent black Blue BLUEtranspare
nt black inside L3 13 13 0 17 26 7 0 15 49
Dessica flow 300 m³/h
setting of supply Air speed in tube [km/h] flow [m³/h] total flow [m³/h][m³/h] ITS env. SPD SDD SSD ITS env. SPD SDD SSD
Blue BLUE transparent black Blue BLUEtranspare
nt black inside L3 18 18 0 20 36 10 0 18 64
Dessica flow 350 m³/h
setting of supply Air speed in tube [km/h] flow [m³/h] total flow [m³/h][m³/h] ITS env. SPD SDD SSD ITS env. SPD SDD SSD
Blue BLUE transparent black Blue BLUEtranspare
nt black inside L3 21 21 0 25 42 12 0 23 76
Cleaness Measurements
FISAIR machine
setting of supply ≥0,3μm particles/m³ reduction ≥0,5μm particles/m³ reduction
[m³/h]outside magnet
inside magnet
air from tube %
outside magnet
inside magnet
air from tube %
meter 320 19000 3300 40 1500 300 10 per m³ 6.713.781 1.166.078 14.134 99 530.035 106.007 3.534 97class - - ISO 6 ISO 9 ISO 7 ISO 5
2009
2012
setting of supply ≥0,3μm particles/m³ reduction ≥0,5μm particles/m³ reduction
[m³/h]outside magnet
inside magnet
air from tube % CR5 area Fisair outlet
Dessica-CR5 %
meter 320 2531 1 54 per m³ 0 0 0 #DIV/0! 894.346 353 19.081 98class - - ISO 6 ISO 8 ISO 4 ISO 6
FISAIR – DESSICA machine
SSD Reference Current
Ladder P HV (uA) (Fisair)
N HV (uA) (Fisair)
P HV (uA) (Dessica)
N HV (uA) (Dessica)
Reference (uA)(Oct-Nov 2011)
A601 350 350 165 167 ~ 150
A607 300 300 259 263 ~ 150-170
A609 290 290 200 203 ~ 150
A610 320 320 197 200 ~ 150
A615 300 300 197 200 ~ 130-140
A616 150 150 90 90 ~50
A622 450 450 267 268 ~ 250
A624 215 215 132 129 ~ 80
A636 180 180 145 142 ~ 80-90
C601 420 420 298 298 ~ 180-200
C607 150 150 97 97 ~ 90
C609 340 340 230 230 ~ 150
C610 400 400 230 290 ~ 200/250C615 90 90 68 68 ~ 30-40
C617 80 80 66 66 ~ 30-40
C622 250 250 164 164 ~ 120
C624 80 80 47 47 ~ 30
C632 310 350 173 236 ~ 50-150
C634 120 120 56 56 ~ 50
C636 150 150 90 90 ~ 70