[Dsg-htcc] HTCC gas flow rate for KPP

[Youri Sharabian]

Hi George,
I would rather agree with you because in this case we can have better control on RHin the detector. I also need to establish some control on the bubblers. We need also 
to find how safely reach the top of the HTCC at any time.Thanks,                Youri
----- Original Message -----
From: George Jacobs <jacobsg at jlab.org>
To: Youri Sharabian <youris at jlab.org>
Cc: dsg-htcc at jlab.org, Bob Miller <rmiller at jlab.org>, Stepan Stepanyan <stepanya at jlab.org>, Volker Burkert <burkert at jlab.org>
Sent: Wed, 25 Jan 2017 14:47:23 -0500 (EST)
Subject: Re: HTCC gas flow rate for KPP


 OK, then it may be useful to increase the flow rate up to 13.0 slm,
 or 1 volume exchange per day. This may be the flow rate we use
 during future high luminosity runs.


 George

On 1/25/2017 1:14 PM, Youri Sharabian
 wrote:
Hi George,

Yes, of course. We just started from 2 slm and gradually
 are going up.We want to see transition from low flow rate to the
 recommended 6.5 slm.Thank you.                   Youri

----- Original Message -----

From: George Jacobs <jacobsg at jlab.org>

To: dsg-htcc at jlab.org, Bob Miller <rmiller at jlab.org>,
 Stepan Stepanyan <stepanya at jlab.org>, Volker Burkert
 <burkert at jlab.org>, Youri Sharabian
 <youris at jlab.org>

Sent: Wed, 25 Jan 2017 10:08:41 -0500 (EST)

Subject: Re: HTCC gas flow rate for KPP



Hi Youri,



I see you have increased the flow rate to 5 slm. I will again

recommend that you increase this flow to a minimum value of 6.5
 slm.




George

On 1/23/2017 2:53 PM, George Jacobs

wrote:



 Hi Youri,



I recommend you increase your CO2 flow rate. The current rate of
 2

slm is too low. I recommend a flow of 6.5 slm until the KPP run 

is completed.



The calculated flow rates for the HTCC are as follows;


 Purge Flow - 20 slm - 1.5 volume exchanges per day- the detector

volume will be purged in 3.4 days


 Running Flow - 6.5 slm - 0.5 volume exchanges per day 


 Reduced Flow - 3.25 slm - 0.25 volume exchanges per day



George
-- 
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
-- 
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



-- 
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


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