BTVs @ ELENA S.Burger , R.Sautier , N.Sharmazanashvili BE/BI IIC 2014_09_18

BTVs @ ELENA

S.Burger, R.Sautier, N.Sharmazanashvili BE/BI

IIC 2014_09_18

• BTV device (Stephane)

• Vacuum chamber design (Roland)

• Screen Insertion Device (Magnetic coupled Push Pull device) (Niko)

Content

BTV x ELENA IIC 2014_09_18 S.Burger, R.Sautier, N.Sharmazanashvili BE/BI

BTVs @ ELENA

https://espace.cern.ch/elena-project/

BTV general description / principleBTVs @ ELENA


Observation cameraCan be standard CCD or

Vidicon tube camera

OUTIN

Insertion deviceHolding an

in-vacuum radiator

LightsMainly used for system calibration and beam

steering

CTRL ROOM

- Beam observation- Beam steering- Emittance measurements

RadiatorCan be scintillating

(Al2O3, ZrO2 etc…) or reflecting material (C, Ti, etc…) depending on the application and type of

beam

1

2

34

5FiltersCan be added in front of the camera to increase the dynamics of the system

HARDWARE CTRL

ETHERNET

Beam direction


BTV measurement examples

DE.MTV7001 DE.MTV7045

These measurements validated the use of BTV instruments for AD extraction lines (BASE + ELENA)

BTV screen typeType Al2O3:CrO2Thickness 1mmCalibration marks No grid anymore to better optimize

the S/N with image digitalization

DE5.BTV15 DE5.BTV32 DE5.BTV37

AD extraction line

AD BASE line

BTVs @ ELENA



BTVs @ ELENABTV general description / principle

Relocation of DE.MTV7045

Location of new BTVsBetween Speta and Kicher




BTVs @ ELENABTV general specs

- Need: - 1 BTV for beam injection measurement - 1 BTV for circulation beam measurement

- Location between injection septum and kicker- Limited space for 2 systems (!) -> choice turned into a common vessel for the 2

devices (See Roland’s section)

- Default position of screen:- OUT for BTV on injection line- IN for BTV in circulating beam -> EIS system (means an action is needed to take the screen OUT)

- Try to have a common design of screen insertion device despite the difference in functionality. Development based on a pneumatic magnetic coupling device

(See Nikoloz’s section)



BTVs @ ELENAControl and acquisition chain

VME based card• CTRL of the camera• CTRL of the lights• CTRL of the filter wheel (not foreseen for ELENA)• CTRL of the movement• Digitalization (400x300 pixels)• Interlock interface if needed

Camera• Analogue B/W to match the standard CERN BTV system• S/N > 50dB• Minimum illumination 0.0002lx (F1.4)

Rack / Crate• No need for new hardware since space available for 2 BTV cards in cfv-193-btv2 (AD extraction line + BASE)



BTVs @ ELENA

Push pull - With spring extend/return pneumatic system

Top view

SEPTA KICKER

622mm (Distance between two flanges)

Cylinder Axis

Screen Location / space constraint



BTVs @ ELENAAlignment / target system

Optical system BTV SI –LHC x 2

injection screen axis



BTVs @ ELENAVacuum Request

NEXTorrD1000-10Pump NEG andIONIC

Forged flanges: UHV FIXED 114/63 x2: UHV FIXED 152/100 x3: UHV ROTATABLE 202/150x2 Bellows5 convolutions hydroforming

Tank St. steel 316 LN 1.4429Viewport : 2

NEG



BTVs @ ELENAVessel

cut Top viewTank axe

Vessel thickness =3mm



BTVs @ ELENAIntermediate plate / support



BTVs @ ELENASupport / Integration

Adjustment table

Tilt adjustment

WEIGHT =102Kg

Antti’s design based on LHC BTV support



BTVs @ ELENA


Project in close collaboration with:

Mechanical machining Jean-Pierre Brachet EN-MME-FWAlignment Tobias Dobers EN-MEF-SUVacuum Roberto Karsevan TE-VSC-IVM

Luca Dassa EN-MME-EDMMechanical support Antti Juhani Kolehmainen EN-MME-EDSIntegration Stephane Maridor EN-MEF-INT


Magnetically coupled Push Pull device (Linear motion) from UHV Design

MPPL 100 – 100 – P

Pneumatic systemSingle acting, spring extend/return

(CDG1BN32) from SMC SMC – CG1 series

Pneumatic SystemSpring extend/return

BTVs @ ELENAScreen insertion device (1)



BTVs @ ELENAMPPL 100 – 100 – P (1)


Connection structure of Drive thimble with

pneumatic Rod

Note : Connection structure of Drive Thimble also serves as a Anti – Rotation tool and assures linear movement of inner Vacuum Shaft !

Device description:• Provides linear motion of the

vacuum shaft.• Vacuum shaft and Drive Thimble are

magnetically coupled.• Both the driver and the follower

consist of arrays of equal numbers of permanent magnets with poles.

• Removes the need for edge-welded bellows ‘stacks’, incorporated within traditional ‘push/pull’ designs - their elimination maximises vacuum integrity!

• Unlike a bellows-sealed device, the MPPL is not subject to the thrust due to vacuum, resulting in smooth free-moving operation.


Assembly components:• Inner Vacuum shaft• Drive Thimble• Flange DN100 – 316LN• End Cap • Position Locking screw




Competencies

Stroke 100mm

Actuation Pneumatic – SMC (CG1BN32)

Forged Flange DN100 – 316LNMagnetic Coupling Samarium – Cobalt - Sm2Co17

Magnetic breakaway force 95N – 211bfBakeout 250c

Vacuum shaft diameter 8mmMaterials Presented in greatest in magnets

Iron, copper, Zirconium

Attributes of the Samarium-Cobalt Magnets : • Extremely resistant to demagnetization• Good temperature stability (maximum use temperatures

between 250 °C (523 K) and 550 °C (823 K); Curie temperatures from 700 °C (973 K) to 800 °C (1,070 K)

RemarksPlease find more detailed information on MPPL device characteristics at – EDMS 1414624



https://edms.cern.ch/document/1414624/1


CDG1BN32Characteristics

Single acting, spring return/extend

Fluid Air

Proof pressure 1.5MPa

Operating pressure Min 0.18MPa – Max 1.0MPa

Piston speed 50 to 1000 mm/s

Stroke length 100mm

Bore size 32mm

Spring Steel Wire (force – N/A)

BTVs @ ELENASMC – CG1 series Pneuma. – Spring extend/return (1)



Components UHV drawing info Real time measures Difference

Flange DN100 Ø 152 mm Ø 151,7mm 0.3mm

Inner Vacuum Shaft Ø 8mm 7.89mm 0.11mm

In Vac Shaft – Extended (from surface of Flange)

50mm + 100mm stroke 152,5mm 2,5mm

Inner vacuum shaft – Retracted

(from surface of Flange)50mm 52.5mm 2.5mm

Linearity of Inner vacuum shaft - Extend

On 100mm stroke – 0°angle

On 100mm stroke – (+/-0.5°) Average +/-0.5°

Linearity – Inner vacuum shaft - retracted On 50mm - 0° angle 0° -

BTVs @ ELENASMC – CG1 series Pneuma. – Spring extend/return (2)Real-time measurements



Position Locking plate

Screen Frame

Support for Screen frame

BTVs @ ELENAScreen mounting system


Top View Side View

→ Permits precise screen alignment


BTVs @ ELENAStatus


- Ready to give to MME to perform final drawings- Test of pneumatic system in parallel

- Drawing approval circuit

- Machining for Q1 of 2015 (?)

Thanks !


Documents

BTVs @ ELENA S.Burger , R.Sautier , N.Sharmazanashvili BE/BI IIC 2014_09_18