[Bteam] Fwd: Tomorrow's agenda, please attend

[Robert Michaels]

Hi B-team

I'll bring two PPT slides showing results from
HAPPEX-3 and requirements of HCBA for PVDIS,
in case there's a chance to show them.
I can say something about Compton tune too,
but it would be much better if Alex was there
and can represent.

Bob


On Tue, 3 Nov 2009, Alexandre Camsonne wrote:

> ---------- Forwarded message ----------
> From: Arne Freyberger <freyberg at jlab.org>
> Date: Tue, Nov 3, 2009 at 3:44 PM
> Subject: Tomorrow's agenda, please attend
> To: bteam at jlab.org, Alexandre Camsonne <camsonne at jlab.org>, Eric
> Voutier <voutier at lpsc.in2p3.fr>
>
>
> B-team Meeting Agenda (2:00pm Wednesday MCC conf. room)
>
> 1 2009-11-04 Wed 14:00 Agenda
>
> 1.1 Beam status
>
> Assessment after cathode activation and 6.067 GeV spin up
>
> PVDIS Beam Requirements
>
> Charge Asymmetry
> Position Asymmetry
> Compton Tune
> Phase advance
> Beam Matching/transport in the A-line
>
> Bonus Beam Requirements
>
> Any issues with Hall-B beam?
>
> 1.2 General Discussion
>
> Parity requirements achieved for Happex-III and PVDIS
> energy spread achieved for HKS, HKS completed with a large fraction of
> the expected data.
> Bonus is fully commissioned
>
> These accomplishments were difficult and have strained the staff. What
> can we do better? Things I'd like to discuss include:
>
> B-team
>
> more involvement from Physics?
> less Wednesday meetings, more daily 8:15 meetings
> B-team content
> Goals for FY10? - 12 GeV commissioning plan - PREX parity quality -
> QWeak parity quality - Information transfer/cross training - TWISS/ε
> measurement and matching routine - raytrace data collection and
> analysis routine for beam physicists
>
> 1:30 scheduling meetings
>
> Low attendance
> Little information transfer
>
> Beam Studies
>
> C50 commissioning has resulted in almost no beam studies being performed.
> No more C50 commissioning during physics operation
> Double Wien commissioning during physics operation (Spring10) looks to
> be just as disruptive. - working with Whitney to see if Homeland
> security run can be move to July2010.
>
> 1.3 Optics-On-Call
>
> Outgoing Byunn Yung
> Incoming Yuhong Zhang
>
> 2 2009-10-28 Wed 14:00 Agenda-Notes
>
> 2.1 New BEM release    Chris
>
> Chris will describe the new BEM tool, including:
>
> Bugs/issues with old BEM
> New features, discussion of GOFF handling
>
> Summary of discussion
> BTeam approved new tool. Chris will create an ATLIS and install this week.
>
> 2.2 Beam Parity Quality during Happex-III    Riad Happex
>
> Brief (5-min) summary of the beam parity quality during Happex-III
>
> Summary of discussion    ATTACH
> As far as PQB, we met all of Happex-III's requirements. Same basic PQB
> requirements for PVDIS. Requirements tighten considerably for next
> year's PREx (and QWeak) Attached is Riad's short presentation.
>
> 2.3 Hall-A
>
> Continue discussion of Hall-A parity setup. Review new match data with
> raytrace data. Fast feedback issues. Feed forward to the upcoming
> 5-pass PVDIS setup.
>
> Summary of discussion
> Match calculated on Friday was loaded Saturday Owls. No harm done.
> Stability improved after match loaded. 20% decrease in Compton counts
> and FFB working now. Not claiming that these effects were because of
> match, but we can claim that the effects occurred in spite of the
> match.
>
> Michele has sent BTeam an email with twiss plots and elog entries
>
> Follow up
> After the plots were fixed, the beam size is under control (less than
> 200 μ m) in both the match and raw elegant displays.
>
> 2.4 Energy Change plan    Yan
>
> Energy change to 6.068 GeV scheduled for Monday? Note: Hall-A will
> want as much current as the target cooling can handle. LEM should be
> performed with 700 μ A linac currents.
>
> 2.5 Beam Studies coincident with Gun Bake
>
> Bake date? To be determined.
> Gun bake and recessiate    SOURCE
> MO Δ f for 12 GeV    Tief
>
> 2.6 Injector Changes
>
> The two wien modification is scheduled for the Winter2010 down. Part
> of the change includes the following decisions:
>
> Remove the 60Hz suppression correctors. These correctors were no
> longer connected to a source/controller.
> Use the 500 keV harp controls to drive the new harp at the 2nd Wien
> girder. The 500 keV harp has not provided the information we wanted at
> the 500 keV region due to unknown magnetic elements between the
> solenoid and harp.
>
> 2.7 Optics-on-Call Summary
>
> Adminstration
> Outgoing Yves Roblin Incoming Byung Yunn
> Machine Status
>
> Two power outages in one week
> Presently, ( 2009-10-27 Tue 07:37) we are recovering from the second
> inside the fence power outage in two weeks. How this will impact the
> schedule is still to be determined.
>
> Scheduled program
>
> Somewhat tentative due to ongoing recovery from power outage. Still
> awaiting official word on date for energy change from 5.7 GeV to 6.07
> GeV.
>
> ESR T1 turbine swap Thursday ( 2009-10-29 Thu)
> ESR QWeak heat exchanger tests Fri-Sat ([2009-10-30 Fri]- 2009-10-31 Sat)
> Hall-B pass change from 1-pass to 5-pass.
> Energy change to 6.068 GeV on Monday ( 2009-11-02 Mon)
> Gun bake/activation on Monday Swing and Owl ( 2009-11-02 Mon- 2009-11-03 Tue)
> MO Δ f coincident with gun bake
> Hall-A PVDIS experiment start Tuesday ( 2009-11-03 Tue)
> As beam current ramps up to near 100 μ A, the FEL will have to been
> turned off to stay within the CHL capacity.
>
> Date: 2009-11-03 15:42:24 EST
>
> HTML generated by org-mode 6.32trans in emacs 23
>
> -- 
> Arne Freyberger
> Director Operations Department
> Jefferson Lab           Phone: (757) 269-6268
> 12000 Jefferson Avenue  Pager: (757) 584-6268
> Newport News, VA 23606  Email:  freyberg at jlab.org
>
>