Upcoming Shift Work at ATF (November 26 – December 21, 2007) and Remote Participation from SLAC ATF training shifts proposal Rob Appleby (contact person,

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Presentation transcript:

Upcoming Shift Work at ATF (November 26 – December 21, 2007) and Remote Participation from SLAC ATF training shifts proposal Rob Appleby (contact person, Cockcroft Institute/University of Manchester, England Mark Woodley SLAC, USA Involved institutes: KEK (contact Kuroda-san) LAL (contact P. Bambade) IFIC (contact A. Faus-Golfe) CERN (contact F. Zimmermann) Shift time required: 4 shifts required in week starting 26 th November 2007  Shift 1: control system familiarisation, layout and structure, injection of beam into DR, extraction to EXT  Shift 2: read the orbit of beam in DR and EXT, reading machine state (Twiss/R)  Shift 3: creation and measurement of DR and EXT bumps, EXT emittance measurement part 1  Shift 4: emittance measurement part 2, additional diagnostics, and ring voltage changes

Study Topics for Nov/Dec “training shifts” (week of November 26-30) –[ ] ATF Damping Ring BPM upgrade (Echotek) –tests of calibration electronics –Turn-by-Turn orbit acquisition and analysis (MIA, coupling correction) –Beam Based Alignment (maybe … ) –[ ] anomalous emittance growth in extraction channel –measured emittance versus localized orbit bumps in extraction components (QM6, QM7, septa) –generation of “trifurcated” closed orbit bumps –[ ] emittance measurement and correction in EXT –multi-wire-scanner and quad-scan measurements; sensitivities to errors –beam phase space reconstruction –coupling correction –[ ] beam halo measurement in EXT

DR EXT INJ

stored beam extracted beam QM7R

x  (x ) (m) extracted beam  B y data  B y fitting core stored beam gap extracted beam conductor “blade” Extraction Septum POISSON model of field in the gap

Simulation: vertical emittance versus vertical position (bump) in QM7R Measurement: extracted emittances versus single-bunch current

Shift Schedule unknown at present (study proposals call for a total of 22 shifts during this 4 week period) shift assignments for each week are made at weekly Monday 13:30 meeting –shift takers request (or are assigned) shifts owl shift:01:00-09:00 (09:00-17:00 here, previous day) day shift:09:00-17:00 (17:00-01:00 here, previous day) swing shift:17:00-01:00 (01:00-09:00 here, same day) –Kubo-san runs the show expect short notice of shifts early in any given week! some training sessions may take place when the machine isn’t running (i.e. Monday morning there, Sunday evening here … ) hopefully Webex connection will be available from the ATF Control Room (not certain yet) remote participation (SLAC) from old PEP Control Room (B685)

ATF Personnel on Shift (leader / sub-leader)

PEP Control Room (Building 685)

ATF Visitors The Europeans (emittance growth, emittance measurement, halo measurement) –Rob Appleby, Cécile Rimbault, Julien Brossard, Maria Alabau, Anthony Scarfe, James Jones, Hayg Guler The Fermions (DR BPM upgrade, TBT studies) –Charlie Briegel (11/28 – 12/13), Nathan Eddy (12/10 – 12/22), Eliana Gianfelice (12/10 – 12/22), Peter Prieto (11/28 – 12/13), Ron Rechenmacher (11/28 – 12/8), Duan Voy (11/28 – 12/13), Manfred Wendt (11/28 – 12/10) The SLACers (DR BPM upgrade, TBT studies, emittance growth) –Doug McCormick (11/30 – 12/22), Tonee Smith (12/4 – 12/22), Justin May (11/30 – 12/22), Mark Woodley (12/8 – 12-22), Yiton Yan (12/3 – 12/15) others remote participants?

References remote participation –Andrei’s presentation at the ATF2 Weekly Meeting (May 16, 2007) [ d070516/remote_participation.pdf] anomalous emittance growth –Feng’s presentation at the ATF2 Weekly Meeting of (September 5, 2007) [ d070905/sep5-atf.pdf] –Kuroda-san’s comments from ATF2 Annecy Meeting (October 15-17, 2007) [ sessionId=20&resId=1&materialId=slides&confId=2268] –Maria Alabau’s presentation from ATF2 Annecy Meeting (October 15-17, 2007) [ sessionId=16&resId=0&materialId=slides&confId=2268] –Rob Appleby’s presentation from ATF2 Annecy Meeting (October 15-17, 2007) [ sessionId=16&resId=0&materialId=slides&confId=2268] Damping Ring BPM upgrade –Manfred’s presentation at the ATF2 Weekly Meeting (August 29, 2007) [ d070829/ATFDRBPM_63.pdf] –Manfred’s presentation at LCWS07 (May 31, 2007) [ ATF_DR_BPM_Status.ppt]