Star-tpc-l mailing list

[Tonko Ljubicic <tonko.ljubicic AT gmail.com>]

Hello,

indeed, we discussed this and I said that we need as much time as possible.

But I think that until mid-January is fine. The big items (RDOs) are really only a week

of time (1/2 day each). The only possible issue is Tim's time spread between all other needs. 

            -- Tonko

On Tue, Oct 15, 2024 at 3:21 AM Shanmuganathan, Prashanth <Prashanth AT bnl.gov> wrote:

Hi Flemming,

We can discuss this during one of the upcoming OPS/TPC meetings. In the meantime, we should begin working on an estimate of the extent of the damage and the time required for repairs.

As per the schedule I sent on September 24 to ops, we start to prepare for the next run in the second week of January, and finish it in about a month. This timeline could certainly be pushed back by a month if necessary. Also official start date of the run is not confirmed, high likely it will push further.

It is pretty sure that we won’t be the ones driving the overall length of the shutdown, but it would be beneficial to have an estimate soon for how many months we’ll need for our work.

Thanks,

Prashanth

---

From: videbaek <videbaek AT bnl.gov>
Sent: Monday, October 14, 2024 3:30 PM
To: Shanmuganathan, Prashanth <Prashanth AT bnl.gov>
Cc: Tonko Ljubicic <tonko.ljubicic AT gmail.com>; Camarda, Timothy <tcamarda AT bnl.gov>; J.H. Lee <jhlee AT rcf.rhic.bnl.gov>; Star-tpc L <Star-tpc-l AT lists.bnl.gov>; Ruan, Lijuan <ruan AT bnl.gov>
Subject: Re: [[Star-ops-l] ] Shutdown Operations Meeting and Schedule

 

Hi Prashanth,
normally Thursdays at 2pm would be fine, but 10/17 is the Directors all
hand meeting.
We also need to make sure Tim and Tonko can attend.

Flemming



On 2024-10-14 15:10, Shanmuganathan, Prashanth wrote:
> Hi Flemming,
> I bought up this in one of our ops meetings. From the meeting my
> understanding was this amount of time is sufficient. But, its better
> if we talk about this again. Shall we discuss this during the second
> part of the ops meeting coming Thursday at 2 pm?
> Thanks,
> Prashanth
>
> -------------------------
>
> From: videbaek <videbaek AT bnl.gov>
> Sent: Monday, October 14, 2024 2:37:45 PM
> To: Shanmuganathan, Prashanth <Prashanth AT bnl.gov>; Tonko Ljubicic
> <tonko.ljubicic AT gmail.com>; Camarda, Timothy <tcamarda AT bnl.gov>; J.H.
> Lee <jhlee AT rcf.rhic.bnl.gov>
> Cc: Star-tpc L <Star-tpc-l AT lists.bnl.gov>; Ruan, Lijuan <ruan AT bnl.gov>
> Subject: Re: [[Star-ops-l] ] Shutdown Operations Meeting and Schedule
>
> Dear Prashanth,
> I think this amount of time for tpc maintenance needs to be discussed
> further. What you have is nominal 2 months, but with Thanksgiving and
> Christmas it is at least 2 weeks shorter. I suggest we have a meeting
> which includes Tonko, Tim, Alexi to discuss a more detailed planning.
> There was substantial damage to the electronics from the pp run that
> has
> to be addressed to have a successful Au-Au run
>
> best Flemming
>
> On 2024-10-14 14:15, Shanmuganathan, Prashanth wrote:
>> Dear all,
>>  I would like to start the shutdown operations meetings from
> Thursday,
>> October 17th at 2:00 PM, during our usual time. Please use the
> regular
>> STAR ops meeting coordinates provided below.
>>  The shutdown will officially begin at 8:00 AM on Monday, October
>> 21st. We will have Greg available for technical assistance
> throughout
>> the week of 21st, and Bob will assist with magnet water draining and
>> pole tip removal.
>>  Schedule of Operations:
>>
>>        *
>> On 21st, once the beam is dumped and the necessary pedestal runs are
>> completed, the shift crew will bring the detectors to APEX mode.
>>
>>        * The magnet will be ramped down, and Prashanth will remove
> the
>> magnet key.
>>        * Subsystem experts will safely shut down their respective
> equipment
>> for the extended shutdown.
>>
>>        *
>> After the magnet is ramped down, Greg will remove the ground straps
>> and barriers around the magnet. This task should take approximately
>> one hour.
>>        *
>> Akio will remove the BBC on Monday morning.
>>        *
>> The EPD crew will remove the EPD on Monday, with plans to finish
>> within the day. To accommodate this, we will perform tasks 2, 3, and
> 4
>> in parallel where feasible.
>>        *
>> Alexei will purge the TPC, TOF, MTD, and GMT subsystems. The shift
>> crew will remain on-site until Alexei provides clearance to dismiss.
>>        *
>> Prashanth and David will purge the sTGC gas system, aligned with the
>> TPC purge timeframe.
>>
>>        *
>> Tim will remove the sTGC ROB box from the west pole tip between
>> Monday(21st) and Wednesday(23rd). Prashanth removes sTGC HV cables.
>>        *
>> STSG and CAD MTechs will drain the magnet water and blow out the
> coils
>> on Wednesday(23rd). In the morning Jameela will coordinate with CAS
>> and water group to shutdown the magnet water.
>>        *
>> STSG and CAD MTechs will remove the east pole tip on Friday(25th)
> and
>> the west pole tip on Monday(28th).
>>        *
>> STSG and carpenters will install the east and west scaffolding on
>> Tuesday(29th).
>>
>>        * TPC/iTPC maintenance will begin on Wednesday, October 30th,
> and is
>> expected to continue until the first week of January.
>>        *
>> The shutdown is estimated to last 4 to 5 months, although this has
> not
>> been officially confirmed. If the shutdown is not significantly
>> extended, we will begin preparations for the next run in the second
>> week of January.
>>
>>  Please let me know if I have missed any items or any suggestions.
>>  Thanks,
>>  Prashanth
>>
>>  Join ZoomGov Meeting
>>
> https://bnl.zoomgov.com/j/1603605873?pwd=NVk1aWs2OW5yb01rTzNtODhiaUJtQT09
> [1]
>>
>> Meeting ID:  160 360 5873
>> Passcode: 110789
>>
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>
> --
> Flemming Videbaek
> senior scientist, emeritus
> videbaek @ bnl.gov
> Brookhaven National Lab
> Physics Department
> Bldg 510D
> Upton, NY 11973
>
> phone: 631-344-4106
> cell     :  631-681-1596
>
>
> Links:
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--
Flemming Videbaek
senior scientist, emeritus
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell     :  631-681-1596