Commissioning and running of sPHENIX

[Stefan Bathe <stefan.bathe AT baruch.cuny.edu>]

I meant pole tip doors, not plug doors.  Sorry.  Here’s the message again corrected:

Dear All,

The pole tip doors are going to be closed Wednesday morning and stay shut until Friday noon.  This is for the purpose of a test of the pole tip doors and also to test the magnet power supplies.

There are three implications:

1) Access to the bore:

The diving boards will be removed late Tuesday (tomorrow) afternoon (no access to bore) and re-installed Friday afternoon.  So access should be restored in time for the weekend.

2) LOTO locks:

We need all LOTO locks to be removed so we can close the pole tip doors.  Please remove your lock now and only put it back while you actually access the bore.

3) Subsystem test:

This will be an excellent opportunity to test all subsystems together with the doors closed.  We should power on as many detector parts as we can do safely simultaneously and study noise levels and temperatures.

Best regards,
Stefan

- 

---------------------------------------------------------------------------------
Stefan Bathe

Professor of Physics
Baruch College, CUNY
and RIKEN Visiting Scientist

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
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On Apr 24, 2023, at 11:02, Stefan Bathe <stefan.bathe AT baruch.cuny.edu> wrote:

Dear All,

The plug doors are going to be closed Wednesday morning and stay shut until Friday noon.  This is for the purpose of a test of the plug doors and also to test the magnet power supplies.

There are three implications:

1) Access to the bore:

The diving boards will be removed late Tuesday (tomorrow) afternoon (no access to bore) and re-installed Friday afternoon.  So access should be restored in time for the weekend.

2) LOTO locks:

We need all LOTO locks to be removed so we can close the plug doors.  Please remove your lock now and only put it back while you actually access the bore.

3) Subsystem test:

This will be an excellent opportunity to test all subsystems together with the doors closed.  We should power on as many detector parts as we can do safely simultaneously and study noise levels and temperatures.

Best regards,
Stefan


- 
---------------------------------------------------------------------------------
Stefan Bathe
Professor of Physics
Baruch College, CUNY
and RIKEN Visiting Scientist

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
----------------------------------------------------------------------------------