Possible Injection Test - meeting 11th July 2008

Kick off presentation - Mike

Access & DSO tests

c/o Ghislain Roy, Tomasz Ladzinski

Nominal DSO conditions for accepting circulating beam in LHC

• New software needed for LASS, scheduled for August 8. New software addresses radiation veto, Beam Imminent Warning and software issues not related to safety.
• 2 weeks of tests thereafter
• DSO approval of nominal system not before August 20
• DSO approval of nominal system also needs experimental shielding in place

Thomas Ladzinski/GR/RB/ML after meeting:

• Relaxed conditions given that there is no possibility of circulating beam
• Leverage conditions we had for TI2 test [requisite tests performed with present software]. Safe area established from 1R through sector 12 & 23 to 3L.
• Extend this to provide secured area from 1R to 4L
• Supporting documentation required to support special conditions. Detail compensatory measures.
• Planning required - man power clearly needed to patrol ring etc. Careful look at existing non-conformities (e.g. CMS's shielding)
• Some extra work needed (but not as much as originally foreseen)
• Needs to be signed off (by whom?)
• Ghislain would like a clear statement that we need to do this - which has been now given by Lyn.
• Agreed date 2/3 August

Stopping beam on collimators in IR3

c/o Ralph Assmann, Stefano Redaelli, Roberto Losito

Re-iteration of Stefano's presentation at the extended LTC.

• No objections
• Need to decide whether to reverse polarity of D3 or not
• Collimators to be locked in place
• Required interventions to be re-scheduled to get in there before test.

Cryogenics

c/o Serge Claudet, Lionel Herblin

- For sector 23 presently under powering tests, the cryo concerns are for Q6_R2 and DFBX under consolidations, the rest is working fine

  - For sector 12 under LHe filling, major progress were made recently with cooling and filling DFB's and stand-alone magnets, DFBX to be consolidated
Lionel will be able to confirm the situation with at least one level gauge and few thermometers not yet in service, but with possibility to increase priority if required.
We should be able to progress with boil-offs and various required assessments for cryo start/maintain MS_2L end of next week at best (end wk 29). We will know more about that in the coming days when we will have seen our ability to control LHe levels.

Feel free to see with them what could be organised, and we will make sure we follow this during the summer period.
As we have not much experience with this, our concerns would be about access conditions after this possible injection test, with HWC to be completed.

Hardware commissioning

c/o Roberto Saban

Overview of revised planning for HWC presented (here).

• No show stoppers, aim to hand 23 over to OPs ASAP
• Triplets will be tight - minimise requirements (correctors etc.)
• Interventions to be accommadated - BI, ATB etc.

Radiation protection

c/o Doris Forkel-Wirth, Helmut Vincke

Review of impact of test presented. See Helmut's presentation at eLTC here

• Areas affected by the Sector Test will be Prohibited Radiation Areas during the test.
• Alice - final shielding has to be in place.
• All areas in the LHC tunnel affected by the Sector Test will be classified as Radiation Area (Personal Dosimeter required) after the test.
• Areas showing dose rates above 15 uSv/h will be classified as Controlled Radiation Areas (additional operational dosimeter, job and dose planning)
• Material leaving the radiation zones have to be controlled and classified by RP
• No significant water and air activation is expected after the Sector Test

Low total number of protons 10 e13 should not pose any problems.

Machine Protection

c/o Bruno Puccio, Jorg Wenninger

No show stoppers. Jorg's take on the set-up for SPS, TI2 and LHC here

Beam Instrumentation

c/o Lars Jensen

• BTV just before Q6.L3
• Sum signal on selcted BPMs at IR3 - should give beam intensity to +/- 10%
• BLM commissioning (half of sector done) needs access for source (Bernd, hwc)

For consideration

• TI2 re-commissioning plus end of line
• TDI software upgrade and commissioning of system (BT/ATB) - should be OK
• Vacuum - status of bake out etc.
• RF injection timing

Reported by:
Mike Lamont
Roger Bailey