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TI 2 beam commissioning 14/15 June 2008 / V.Mertens / LTI coordination meeting / 26.6.2008

TI 2 beam commissioning on 14/15 June 2008. TI 2 beam commissioning 14/15 June 2008 / V.Mertens / LTI coordination meeting / 26.6.2008. Coordination of the beam commissioning again by OP. MD scheduled between 14 June 8:00 and 15 June 24:00, with an interruption over night.

catherine-contreras
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TI 2 beam commissioning 14/15 June 2008 / V.Mertens / LTI coordination meeting / 26.6.2008

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  1. TI 2 beam commissioning on 14/15 June 2008 TI 2 beam commissioning 14/15 June 2008 / V.Mertens / LTI coordination meeting / 26.6.2008 Coordination of the beam commissioning again by OP. MD scheduled between 14 June 8:00 and 15 June 24:00, with an interruption over night. RP survey scheduled for 16 June 8:00; allotted intensity: 7*10^13 p. Test closure and DSO test done on 11 June (some access SW problems the weekend before). DSO memo to authorise beam operation received 13 June noon (EDMS 927497). Initially some problems with the BETS of the MKE in SPS LSS4 – disabled for the test (now fixed). First shot down TI 2 at 10:31 on 14 June. BFCTI29125 read 0 – fixed in the afternoon (L.Jensen). BCFTI610225 quite noisy (rather rely for intensity measurement on SPS BCT). QTLF6102 over-temperature 14 June ~16:15 – water valve not sufficiently open – fixed (J.Bauche). Practically full measurement programme performed, including collimator(s). Supercycle length again 25.2 s. Total intensity used approx. 5*10^13 p. Single “pilot” bunch (approx. 6-8*10^9 p/shot) on 14 June. Some multi-bunch on 15 June (up to 4 bunches of 8*10^10 p for 20’, then 4 bunches of 4*10^10). Rest of 15 June with single “fat pilot” bunch (3*10^10 p). Alice effects: gas detectors tripped on 15 June ~10:00; pixel event 15 June ~18:16:01  LTC New radiation zone: UJ22 and ~30 m into R22.

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