1

Effect of staging on module connection and support arrangement

Yury Ivanyushenkov

RAL

2

Beam

Tracker module #1

AFC module #1

RF module #1

AFC module #2 AFC module #3

RF module #2 Tracker module #2

MICE Cooling Channel

3

MICE Cooling Channel

4

24-M4 24-M4

4-M6

24-M824-M8

4-M6

MICE Cooling Channel

5

- STEP I: spring 2006

STEP II: summer 2006

STEP III: winter 2007

STEP IV: spring 2007

STEP V: fall 2007

STEP VI: 2008

MICE Stages by Alain Blondel

6

- STEP I

STEP II

STEP II.V

Insert absorber (solid) between the two halves and measure Pt & E distribution and emittance growth

STEP II.VI

Split tracker in two parts and measure against each other(systematics)

Establish beam match andwether we have all knobs necessary to draw Emittance vs transmission curve. Measure emittance

These are mostly questions for beam design and matching to and within solenoid.

MICE Additional Stages by Alain

7

STEP V

STEP V.0

Shorter, less expensive, no coupling coil, (very limited optics flexibility) does this work in flip, RFoFo, non flip modes? These are mostly optics questions

MICE Additional Stages by Alain

8

Module–to–Module Interface Matrix

Tracker#1

AFC #1 RF #1 AFC #2 RF #2 AFC #3 Tracker #2

Stage 1

Stage 2 yes

Stage 2.5 yes

Stage 2.6 yes

Stage 3 yes yes

Stage 4 yes yes yes

Stage 5.0 yes yes yes yes yes

Stage 5 yes yes yes yes yes

Stage 6 yes yes yes yes yes yes yes

Notation: means interface

9

Module–to–Module Interface Requirements

• Tracker #1 interfaces with : AFC #1 OR Tracker #2

• AFC #1 interfaces with : Tracker #1 AND Tracker #2 OR Tracker #1 AND RF #2

• RF #1 interfaces with : AFC #1 AND AFC #2

• AFC #2 interfaces with : RF #1 AND Tracker #2 OR RF #1 AND RF #2

• RF #2 interfaces with : AFC #1 AND AFC #3

• AFC #3 interfaces with : RF #2 AND Tracker #2

• Tracker #2 interfaces with : Tracker #1 OR AFC #1 OR AFC #2 OR AFC #3

10

AFC Module Interface Requirements

AFC #1 Tracker #2

AFC #1 RF #1Tracker #1

AFC #1:

AFC #2 Tracker #2RF #1

AFC #2 RF #2RF #1

AFC #2:

AFC #3 Tracker #2RF #2AFC #3:

Stage 4

Stages 5 and 6

Stage 5

Stage 6

Stage 6

Gatevalve

Gatevalve

Gatevalve

Tracker #1Gatevalve

Gatevalve

11

“Universal” AFC Module

Tracker #1Universal

AFC module

Tracker #2

RF #1 or RF #2RF #1 or RF #2

Gatevalve

Gatevalve

12

Maximal Forces on Modules in Stage 6

Module Max force,

MN

Case

Central focus pair module 0 All

Coupling coil module 0.2143from centre;

0.1859towards centre

Flip mode, Case 2

Non-Flip mode, Case 2

Edge focus pair module 0.0967from centre;

0.0372towards centre

Flip mode, Case 3

Non-Flip mode, Case 2

Tracker solenoid module 0.4861towards centre

Non-Flip mode, Case 2

13

“Universal” AFC Module : Forces in Stage 6

UniversalAFC

moduleBeam

Cooling channelcentre

0.0967 MN(in Flip mode, Case 3)

0.0372 MN(in Non-Flip mode,

Case 2)

14

Next steps

Q: Do we want a “universal” AFC module ?