Click here to load reader
Upload
loris-rostagno
View
232
Download
3
Embed Size (px)
Citation preview
Etichette dei cavi dei serviziC.Luci
•Sistema di allineamento•Etichettatura dei cavi•Proposta di passaggio dei cavi
RASNIK SYSTEMRASNIK SYSTEM
- The RASNIK system consists of : Rasled (IR led+mask), lens, Rascam (CMOS camera) + DAQ (Icaras)
RASLED RASCAM
BARREL ALIGNMENTBARREL ALIGNMENT
• Inplane system : Monitoring of MDT chamber deformation
•The BIM-BIR connections (Precision < 30 m)
• Praxial System (Proximity + axial) : Link MDT chambers of a given layer (Precision < 30 m)
• Projective system:Link the 3 layers of large MDT chambers (BIL,BML,BOL) for sagitta correction (Precision < 30 m)
•The reference system for absolute position (Precision < 0.5 mm)
Projective lines
(RASNIK)
Axial lines(RASNIK)
Alignment at H8
H8: 3D view H8: top view
3
• Atlas : 4 projective rays in the half-barrel
• H8 : special situation with 6 projective rays on two towers up to 4 proj. platforms on chambers
•H8: praxial + inplane
Atlas: standard sector
BIL
BML
BOL
BIL
BML
BOL
~ 0
~
0
Projective platforms
BIL Roma
BML
(Led)
LenteCCD sulle BOL
BOL BML
CCDLente
Led
BIL BIL0
Non ci sara’
Inplane
X
Y
Sistema di riferimento dei CCD
CCD 0
Crossplates
Long beam
LED+masks
Image sensor
Lenses
1 2 3 4
CCD 1
η= 0
HV
RO
4 cavi LED 2 cavi CCD
X
Y X
Y
Ccd 0 Ccd 1
BIL
Praxial: Goals & Requirements
Translation Rotation
X 100 m 100 rad
Y 10 m 500 rad
Z 10 m 500 rad
*
**
**
z
x
y
* Along wires: second order effect on sagitta computation
** Higher accuracy obtained with 2 adjacent systems
Remarks
The praxial system is used to unite a layer of chambers fo form a single “rigid” layer
•Proximity system
•Axial system
Required accuracy on proximity
Praxial Systemccd
led
lens
Ccd axial led axial
No precision for the positioning of optical elements A calibration is needed
2 cavi ccd 1 cavo led
1 cavo ccd 2 cavi led
Axial rays
BIL Praxial pictures
Roma
Pavia
lens
ledAxial lens
Cavi schermati per i ccd
Problema per far passare tutti i cavi senza disturbare le linee ottiche
piattaforma
Axial rays
Praxial in the BML
Sulla BML e BOL la piattaforma e’ incollata su ML1
Cavi !!!
(n.b. la foto e’ relativa ad una BOL)
zImage sensorLensLED-Mask
BIL-BIS Standard sectors (e.g. sectors 1-2)HV side
Side A
BIS6BIS5BIS4BIS3 BIS7 BIS8BIS1 BIS2
RO side
HV side
projective
BIL6BIL5BIL4BIL3
Reference system
projective
BIL-BISconnection
RO side
BIL1 BIL2
Projectiveplatform
B-sensor platforms
15/05/2002
z
Image sensorLensLED-Mask
BML-BMS Standard sector (e.g. sectors 1-2)
BMS6BMS5BMS4BMS3BMS1 BMS2
projective
BML6BML5BML4BML3BML2
Reference system
BML-BMSconnection
BML1
HV sideSide A
RO side
HV side
RO side
Projectiveplatform
B-sensor platforms
cutouts
BML-BMSconnection
15/05/2002
Axial system in H8
BML BIL Roma
Axial led
Rasmux
DCS
Rasmux
I cavi vanno numerati seguendo uno schema generale (va stabilito)
Sulle BML il rasmux si trova sul crossplate
Manca il CSM e la distribuzione del HV
8 canali CCD
8(*2) canali LED
Etichette cavi inplane
LED CCD
C Aη=0
MDT
0 1 2 3
0 1
MDT
0123
01
INPx (x=0,1,2,3) INPx (x=0,1)
I cavi LED si distinguono dai CCD dalle dimensioni e dai connettori
n.b. come suggerito da Harry e Florian
Lato HV
Lato RO
Guardiamo da sopra o da sotto?
Etichette axial-praxial
MDT η Camere ACamere C
RO
HV
AROCRO
AHVCHV
PRA_CHV : cavo praxial (CCD o LED) angolo CHV
AXI_CHV : cavo axial (CCD o LED) angolo CHV
Identificazione dei 4 angoli della camera secondo Florian Bauer
Projective e Reference Lables
zImage sensorLensLED-Mask
BIL Standard sectors (side A)RO side
HV side
projective
BIL6BIL5BIL4BIL3
Reference system
projective
BIL-BISconnection
RO side
BIL1 BIL2
B-sensor platforms
Projective: PRO_HV e PRO_RO
Reference: REF_HV e REF_RO
BIL-BIS LableReference system
Projective RASNIK mask(ray 2,3,4)
BIL
BIS
BIS-BIL connection
Projective RASNIK mask (ray 1)
Praxial
B-sensor
B-sensor
BIL-BIR: BLS_HV e BLS_RO
B sensors: BFL_HV e BFL_RO
Cavi BIL (alignement)CCD LED Lable
Inplane 2 4 INPx
Proximity 4 4 PRA_yzz
Axial 2 2 AXI_yzz
Projective -- 2 PRO_zz
Reference -- 2 REF_zz
BIL-BIS -- 2 BLS_zz
x=0,1,2,3 y=A,C zz=HV, RO
n.b. Il numero ed il tipo dei cavi dipende dalla posizione della camera
Caveria a livello spacer (BIL)