1. KEK news ( )
S.Tanaka

2. BELLE PAC
Report from KEKB Accelerator Review
Recommendation:
The KEKB Group should create a Parameter Team to develop and approve a consistent parameter set for SuperKEKB
The team should have participation from each group to ensure a fully integrated design for the machine
During the last year, each group has worked semi-independently to look for showstoppers
All of this work now needs to coalesce
The KEKB and BELLE Groups should formally create a joint working group to optimize the interaction region and the machine-detector interface
The first topic to be decided is the rotation of the BELLE detector
The second topic to be studied is how to understand and minimize the detector background
In addition, a solution should be developed for damping vibrations of the interaction region components and/or the beam to maintain luminosity
(Review Committee Report draft is uploaded on wiki page :KEK contact )

3. PXD Reviewer’s comment
BG simulation including kinematic supports should be done (it may cause serious BG for SVD).
The estimation of occupancy should make clear by performing simulation.
BG effect: charged particle , photon, neutron
PXD DAQ issues should be solve by discussing with DAQ group, sufficiently.
PAC review member will be reviewing BELLEII TDR next May.

4. IR Beam ducts in the cryostat are water cooled.
The central part of the present IP chamber is free from direct synchrotron radiation from the last bend. ( in the 0th approximation).
Design and test of the IR assembly (should be done by 2011 Oct.)
IR meeting will be merged into one.

5. SuperKEKB Main Ring schedule
K. Akai
SuperKEKB Main Ring schedule
FY2009
FY2010
FY2011
FY2012
FY2013
FY2014
Beam operation
MR commissioning
Tunnel clear
Remove magnets and beam pipes
Base plates
Beam pipes (LER_wiggler)
Fabrication
TiN coating
Install
Beam pipes (LER_arc)
Design
Fabrication
TiN coating
Beam pipes (HER_arc)
Install
Design
Fabrication
Install
Magnets & Power supplies
Design / Fabrication
Field measurement
Install
Cabling / Check
Alignment
2nd?
Beam monitors and Control
R&D / Fabrication
Test
RF reinforcement
Layout change / Add stations / Cavity improvements
IR hardware
Conditioning
QCS R&D
QCS fabrication
Install
& test

6. Radiation hardness :DAQ hardware
Radiation hardness of front-end electronics
- Many FPGAs are used in detector FEE placed inside detector
structure.
- There is some worry about the radiation hardness.
-> Radiation test during KEKB operation
Exposed FPGA+optical link (Virtex2Pro+Rocket IO) in beam line
during 2009 runs and studied the error rate in the data transfer.
Result:
* Only 1 error during spring run ( ~11kRad)
* ~10 errors during fall run (~64kRad), and then went dead.

7. DAQ

8. Next B2GM PXD session will be divided into
1,Mechanics, service meeting (IR,PXD,SVD,CDC :concerned person)
2, PXD main session
(all detector parts agreed with this plan)
Other private meeting? ( BG simulation, DAQ etc.)