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)