[Esr-users] ESR Users SAD ’19 plan

[Steven Lassiter]

Hi Dave,


The Hall C magnet will remain cold at 4K and be powered throughout the SAD.

Power supply tuning and maintenance will require that the magnets be operated to full currents. No dates have been set for when Danfysik will be on site for this.


Dump resistor testing will be done after the new resistors arrive. No date for this as the PO is tied up with legal about contract language.


Training of the HB magnet to higher currents may be carried out if time and resources are available.


Steven


________________________________
From: Esr-users <esr-users-bounces at jlab.org> on behalf of David Kashy <kashy at jlab.org>
Sent: Tuesday, March 5, 2019 3:09:44 PM
To: esr-users
Subject: [Esr-users] Fwd: ESR Users SAD ’19 plan

Hi All,
Cryo needs to know what the plans are for the 3 Halls with regard to helium levels during the summer down. Please reply stating
All magnets and dewar to remain at constant level unless some changes are planned. Also if there is any testing to be done requiring ramping magnets and likelyhood of fast dump or quench.

Any other changes to the system such as bringing on new hardware that will need purification..

See below

Thanks
Dave


________________________________
From: Joe Wilson <jwilson at jlab.org>
Sent: Tuesday, March 5, 2019 11:31 AM
To: David Kashy
Cc: Jonathan Creel; Steve Suhring; Chris Perry; Sasa Radovic; Thilan Wijeratne; Brian Mastracci
Subject: ESR Users SAD ’19 plan


Dave,

We (Cryo Ops) request information from the ESR Users to prepare for SAD 2019. Are there anticipated changes in the ESR load, especially helium inventory changes in the halls? For your information, we are preparing to slowly store the Hall D helium inventory and changes in the CEBAF inventory.

Thanks!



-----------------

Joe D. Wilson, Jr.

Cryogenic Operations Engineer



Jefferson Lab

www.jlab.org<http://www.jlab.org/>

office desk: 757-269-7722

jwilson at jlab.org

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