[Dsg-mvt] Electricity for heating blanket and heat tape

Wed Dec 6 00:26:40 EST 2017

Dear all,

Leaving the counting house around 9pm, I saw that an additional plug was 
installed for the thermostat keeping the flowmeters at good temperature. 
Thank you very much! I ll be able to test the mixing system correctly 
tomorrow so that we will be ready when we get beam.

George, thank you for installing the thermostat. Now that it can be 
powered up, can you finish the installation tomorrow morning? So that in 
the middle of the morning, I switch to the mixing system (I kept premix 
tonight because I wanted to study different DAQ stuff being 100% I have 
clean gas).

I do not really know who should do it, but I would be very grateful if 
the CF4 bottle could be brought to the Hall B gas shed and connected to 
pipes feeding the mixing system.

Again thank you everyone!

Kind regards,

Maxime

Le 05/12/2017 à 15:44, George Jacobs a écrit :
>
> Hi Maxime,
>
> The isobutane blanket is now working and the pressure in the tank is 
> up to 30 psi.  You can begin mixing the 10% C4H10 in argon mix. We 
> need to disconnect the pre-mix and check the valves are properly lined 
> up.
>
> The CF4 is still in the bldg 90 gas cage along with the remaining pre-mix.
>
> I mounted the thermostat sensor bulb to the MFC mounting plate. Ready 
> for power on it. I replaced the insulation as well as I was able. The 
> current ambient temp is mild and each MFC makes ~ 12watts of heat from 
> the solenoid control valve,  so this is good to go. Once the 
> thermostat is powered up, it will be ready for the cold temps on the way.
>
> Please take care manipulating the insulation behind the rack so you do 
> not damage the thermostat bulb. This is mounted on the left side.
>
> Thanks,
>
> George
>
>
> On 12/05/2017 11:58 AM, mdefurne wrote:
>>
>> Hi Jason
>>
>> Thank you very much. This morning, George was working on it and I 
>> hope the blanket is just slow to warm up and not failing.
>> George would like to have a thermostat installed to make sure heat 
>> tapes will not overheat the flowmeters and consequently break them. I 
>> agree that it would be safer since we are kind of blind in regulating 
>> the power of the heat tape.
>>
>> Volker, Walt, would it be possible to have it done as soon as 
>> possible? If everything goes well for the accelerator, tomorrow 
>> evening we have beam sent in the Hall. But I cannot use the mixing 
>> system yet. No real test have been done with it. These tests include 
>> checks that the mixing system works well, but also tuning the HV 
>> setting depending on the quality of the mixture. (depend strongly on 
>> the mixture... this is part of the "calibration" of micromegas 
>> detectors).
>>
>> If we have everything we need to do the job, please try to have it 
>> done today. I apologize for the rush but this mixing system was 
>> supposed to be ready a long time ago and not the day prior 
>> engineering run.
>>
>> Thank you,
>>
>> Kind regards,
>>
>> Maxime
>>
>> Le 05/12/2017 à 10:22, Jason Willoughby a écrit :
>>> It was completed last night, however it appears the blanket does not 
>>> work.
>>>
>>>
>>> Jason Willoughby
>>> FM&L Electrical Engineer
>>> Thomas Jefferson National Accelerator Facility
>>> 628 Hofstadter Road STE 1
>>> Newport News, VA 23606
>>> (757)-269-5372
>>>
>>> ------------------------------------------------------------------------
>>> *From: *"mdefurne" <mdefurne at jlab.org>
>>> *To: *"Jason Willoughby" <jasonw at jlab.org>
>>> *Sent: *Monday, December 4, 2017 5:04:33 PM
>>> *Subject: *Re: [Dsg-mvt] Electricity for heating blanket and heat tape
>>>
>>> Hello Jason,
>>>
>>> When do you think the electrician will add the plug to the blanket 
>>> and for
>>> the heat tape?
>>>
>>> Thank you,
>>>
>>> Kind regards,
>>>
>>> Maxime
>>>
>>>
>>>
>>> > George,
>>> >
>>> > Since you want this done quickly, I will have to modify the 
>>> install a bit.
>>> > In order to avoid an outage and ordering a new GFCI breaker, I 
>>> will have
>>> > the electrician install a plug on the blanket cord. This will 
>>> allow it to
>>> > be plugged into a GFCI receptacle.
>>> >
>>> >
>>> > Jason Willoughby
>>> > FM&L Electrical Engineer
>>> > Thomas Jefferson National Accelerator Facility
>>> > 628 Hofstadter Road STE 1
>>> > Newport News, VA 23606
>>> > (757)-269-5372
>>> >
>>> >
>>> > From: "George Jacobs" <jacobsg at jlab.org>
>>> > To: "Jason Willoughby" <jasonw at jlab.org>
>>> > Cc: "mdefurne" <mdefurne at jlab.org>, "Matthew Marchlik"
>>> > <marchlik at jlab.org>, "dsg-mvt" <dsg-mvt at jlab.org>
>>> > Sent: Friday, December 1, 2017 2:14:18 PM
>>> > Subject: Re: Electricity for heating blanket and heat tape
>>> >
>>> > Hi Jason,
>>> >
>>> > Sounds good. The blanket has a built in thermostat. Temperature is
>>> > automatically controlled for 90F.
>>> >
>>> > Thanks,
>>> > George
>>> >
>>> > On 12/1/2017 1:36 PM, Jason Willoughby wrote:
>>> >
>>> >
>>> >
>>> > George,
>>> >
>>> > The work is fairly simple and straight forward. I do not think an
>>> > additional site visit is necessary. I plan on having the blanket hard
>>> > wired to a SPST switch. Do you require a thermostat for the blanket?
>>> >
>>> >
>>> > Jason Willoughby
>>> > FM&L Electrical Engineer
>>> > Thomas Jefferson National Accelerator Facility
>>> > 628 Hofstadter Road STE 1
>>> > Newport News, VA 23606
>>> > (757)-269-5372
>>> >
>>> >
>>> > From: "George Jacobs" <jacobsg at jlab.org>
>>> > To: "mdefurne" <mdefurne at jlab.org>
>>> > Cc: "Jason Willoughby" <jasonw at jlab.org> , "Matthew Marchlik"
>>> > <marchlik at jlab.org> , dsg-mvt at jlab.org
>>> > Sent: Friday, December 1, 2017 1:16:22 PM
>>> > Subject: Re: Electricity for heating blanket and heat tape
>>> >
>>> > I have a meeting with Dr Chandler at 3pm, so, I will be at the 
>>> target gas
>>> > pad as soon as that is finished.
>>> >
>>> > George
>>> >
>>> > On 12/1/2017 11:19 AM, mdefurne wrote:
>>> >
>>> > BQ_BEGIN
>>> > Dear George, Dear Matt,
>>> >
>>> > I went this morning with Jason to take a look at what needs to be 
>>> done for
>>> > having electricity for the heating blanket and the heat tape. 
>>> Jason will
>>> > certainly go back there this afternoon with an electrician around 3pm.
>>> > George, can you please go with them?
>>> >
>>> > Once the electricity is installed for the blanket, I will start 
>>> testing
>>> > and using the mixing system. Is it OK? (I would like to already 
>>> use pure
>>> > Argon, can I?)
>>> >
>>> > Kind regards,
>>> >
>>> > Maxime
>>> >
>>> >
>>> >
>>> >
>>> > --
>>> > George Jacobs
>>> > Jefferson Lab (TJNAF)
>>> > STE 12
>>> > 12000 Jefferson Ave.
>>> > Newport News, VA 23606
>>> >
>>> > (office) 757-269-7115
>>> >
>>> > (cell)   757-876-0480
>>> >
>>> > (email) jacobsg at jlab.org (website) https://userweb.jlab.org/~jacobsg
>>> >
>>> >
>>> > BQ_END
>>> >
>>> > --
>>> > George Jacobs
>>> > Jefferson Lab (TJNAF)
>>> > STE 12
>>> > 12000 Jefferson Ave.
>>> > Newport News, VA 23606
>>> >
>>> > (office) 757-269-7115
>>> >
>>> > (cell)   757-876-0480
>>> >
>>> > (email) jacobsg at jlab.org (website) https://userweb.jlab.org/~jacobsg
>>> >
>>> > _______________________________________________
>>> > Dsg-mvt mailing list
>>> > Dsg-mvt at jlab.org
>>> > https://mailman.jlab.org/mailman/listinfo/dsg-mvt
>>> >
>>
>
> -- 
> George Jacobs
> Physics Detector Support Group
> Jefferson Lab (TJNAF)
> STE 12
> 12000 Jefferson Ave.
> Newport News, VA 23606
>
> (office) 757-269-7115
>
> (cell)   757-876-0480
>
> (email)jacobsg at jlab.org
>
> (website)https://userweb.jlab.org/~jacobsg
>
>
>
> _______________________________________________
> Dsg-mvt mailing list
> Dsg-mvt at jlab.org
> https://mailman.jlab.org/mailman/listinfo/dsg-mvt

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