New Wednesday meeting cycle

• 9.11 AD&I biweekly• 16.11 SCRF ML meeting monthly• 23.11 AD&I biweekly• 30.11 (Free slot) monthly• 7.12 AD&I• 14.12 …

Two meetings per month for AD&I team.TDR related work:- design (& cost) work- documentation (EDMS)- TDR writing (coming soon!)

2

Today

• Review DESY BTR meeting summary– Sent to AD&I mailing list 01.11.11

• Action item list (for today)– status

• Agenda for next meeting (23.11)

20.04.2009

3

Baseline Decisions

• Retain a two-stage bunch compressor• Reduced field Flux Concentrator for e+ source • 500 MV s-band linac for auxiliary positron source • Include e+/e- production overhead (margin) in

specification for RF • HLRF system for 5 GeV Boosters RDR/DRFS • Adjustment of the damping ring transfer lines

(Central Region)• Physics related instrumentation accepted as

proposed.• BDS/FFS length fixed at current length

20.04.2009

4

Other issues discussed

• Global timing– Finalisation of path length for TDR– Understand construction tolerance (survey)– Location (and design) of adjustment chicane– Final path lengths not known until after KEK BTR

(Jan 2012).

• Operations and commissioning – Understand strategy and use of beam dumps

• desired rating etc.

– Understand scope of use of aux. positron source

20.04.2009

5

Action Items (4.11.11)

• Prepare detailed design change document for PLTR, PRTL, ELTR, PRTL – Palmer, Paterson– Friday 4.11

• Prepare central region cartoon indicating updated beamline and dump locations– Walker, List, Palmer– Friday 4.11

20.04.2009

Draft document complete (Report from Palmer/List)

6

Action Items (for today) #1

• Update top-level parameters– Make Dp/p consistent with two-stage compressor

and FC undulator parameters• Walker, List, Gai -> try for end of next week!

– Include shifted waist enhancement in luminosities• Walker [Meeting tomorrow with T. Hartin → next week].

20.04.2009

7

Action Items (for today) #2

• Update machine parameters– Consolidate/update compressor parameters for two-

stage system• Solyak

– Consolidate positron source parameters for 3.2 T Flux Concentrator

• Gai

– Update/confirm Damping Ring acceptance parameters• Guiducci, Palmer, Gai -> Review Wanming’s design

parameters

– Review and update source RF parameters (gradient etc.)

• Walker, Gai, Sheppard -> send proposal tomorrow

20.04.2009

8

Action Items (for today) #3

• Lattice design work– Propose remaining treaty points:

• e- ML to e+ source – End of MPS collimator section• e+ ML to e+ BDS – End of MPS collimator section

– Walker, List

• Conceptual layout of Aux. source (CFS requirements)– Gai, Kuriki

• CFS: Detector hall layout – finalise numbers of shafts and overall layout, support tunnel– mid December for CERN/FNAL like sites.

• Include installation in commissioning group?• Meeting to discuss service tunnel layout (soon)

20.04.2009

9

Next ADI meetings (tentative)

• 23.11.11– Review action item status– Review progress on lattice design work

• note: freeze due 30.11

– TDR writing assignments and schedule

• 7.12.11– Review action item status– CFS update to central region drawings, service

tunnel etc.– TeV upgrade status (parameters)

20.04.2009