Tuesday, A ugust 1 1, 2 015 5 :56:43 P M C entral European Summer Time
Subject: Re: Dose equivalent around beam axis ?
Date: Monday, July 27, 2015 9:32:22 AM Central European Summer Time
From:
To:
CC:
Lali Tchelidze
Christine Darve
Pierre Bosland, Sebastien Bousson, Nuno Elias
Hi Christine,
Sorry for a late reply, but I was on a vacation.
We still don’t have new/updated information for prompt dose rates in the tunnel and/or energy deposition in the equipment. As you know Luigi Esposito that was supposed to do number of Monte-­‐Carlo studies in the tunnel left ESS at the end of May, thus plans and time-­‐frames for the new results have shifted to later dates. Currently, the end of this year is a scheduled time to obtain realistic dose maps in the tunnel.
Best,
Lali.
From: Christine Darve <[email protected]>
Date: Friday 17 July 2015 14:22
To: Lali Tchelidze <[email protected]>
Cc: Pierre Bosland <[email protected]>, Sebastien Bousson <[email protected]>, Nuno Elias <[email protected]>
Subject: FW: Dose equivalent around beam axis ?
Lali,
Could you please send any possible updated information about distribution of the expected dose rate in the equipment ?
Are the values listed below still correct ?
Thanks in advance. Christine
From: Lali Tchelidze
Sent: Monday, November 04, 2013 2:46 PM
To: Christine Darve
Subject: Re: Dose equivalent around beam axis ?
Hi Christine,
At distances 5 – 50 cm from the beam pipe, maximum expected absorbed dose rate in the equipment
can be estimated at (1 – 5) x 10^4 Gy/year for 24/7 normal operations. I don't have a dose map with
good resolution yet, but I can produce one if necessary.
Cheers,
Lali.
______________________
Lali Tchelidze
Physicist
European Spallation Source ESS AB
P.O Box 176, SE-221 00 Lund, Sweden
Visiting address: Tunavägen 24, Lund
Mobile: +46 72 179 20 61
Phone: +46 46 888 30 61
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E-mail: [email protected]
www.esss.se
From: Christine Darve <[email protected]>
Date: Monday, November 4, 2013 2:24 PM
To: ESS User <[email protected]>
Subject: Dose equivalent around beam axis ?
Lal,
In reference to your calculation shown below, could you please send me a zoom of the deposition around the beam tube ?
We need to estimate the maximum radiation resistance of equipment to be mounted at distance between 5 cm to 50 cm from the beam axis.
The order of magnitude is less than 5 MGray.
You can fit the time constant, accordingly.
Thanks, Christine
E.g.:
Add scaling on the following zoom:
Reference:
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______________________
Christine Darve
Engineering Scientist
Accelerator Division, European Spallation Source
P.O Box 176, SE-221 00 Lund, Sweden
Visiting address: Tunavägen 24, Lund
Mobile: +46-721-79 20 28
Phone: +46-46-888 30 28
E-mail: [email protected]
Web-page: http://cdarve.web.cern.ch
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