Search found 89 matches

by iRad
10 May 2015, 08:17
Forum: Detectors
Topic: Info on some PMTs?
Replies: 10
Views: 5824

Re: Info on some PMTs?

Hi Karl - The HA coating is for shielding, and not used over the cathode. The tube could have been used for liquid scintillation or some other purpose. This is done for dealing with issues relating to spatial uniformity or polarization. When head-on tubes are used instead of side window, they will u...
by iRad
10 May 2015, 07:48
Forum: Introductions
Topic: Hello, I'm Greg in California
Replies: 6
Views: 3183

Re: Hello, I'm Greg in California

The large coax is more than likely the signal wire, but like Steven said, the other two wires might not be the obvious ground and HV positive the colors would seem to indicate, as the voltage divider could be setup for negative bias. A simple way to determine otherwise, is to see if any of the wires...
by iRad
08 May 2015, 13:12
Forum: Introductions
Topic: Tom McCarthy From Ireland
Replies: 8
Views: 2848

Re: Tom McCarthy From Ireland

Tom – Welcome to the group!
It’s very refreshing to see young people with your kind of talents. I’m sure you will contribute greatly to the community.
(edited TMI)
Cheers, Tom Hall
by iRad
03 May 2015, 12:44
Forum: Introductions
Topic: Geoff from Alaska
Replies: 1
Views: 1213

Re: Geoff from Alaska

Geoff, welcome to the board.
You live (Anchorage) and especially work (Prudhoe Bay), in a sometimes harsh but most likely exciting place. I would love to see them both (as well as other parts of Alaska) one day.
Please let me know if you need any assistance with your BGO build. Tom
by iRad
03 May 2015, 12:41
Forum: Introductions
Topic: My intro
Replies: 3
Views: 2431

Re: My intro

Hi Emanuele,
Great to see you here!
by iRad
03 May 2015, 12:36
Forum: Introductions
Topic: Hi members
Replies: 9
Views: 2864

Re: Hi members

Hi Luuk
Great to find you here. I know everyone can greatly benefit from your many years of experience and extraordinary willingness to be helpful and encouraging to others.
by iRad
03 May 2015, 12:26
Forum: Introductions
Topic: G'day everyone from John
Replies: 7
Views: 2780

Re: G'day everyone from John

Welcome John!
Let me know if you need any help with the LYSO build. I've had best resolution results using just a single crystal head-on. Of course Luuk says he gets very good resolution also from a small array, but after all, he is Luuk! :)

Cheers, Tom
by iRad
03 May 2015, 12:18
Forum: Introductions
Topic: iRad is me, Tom Hall
Replies: 5
Views: 2539

Re: iRad is me, Tom Hall

Thanks guys, you are all very kind.
Geoff, welcome to the board and please let me know if you need any assistance with your build. Tom
by iRad
01 May 2015, 12:51
Forum: Introductions
Topic: iRad is me, Tom Hall
Replies: 5
Views: 2539

iRad is me, Tom Hall

Way to go Steve! Nice new sight!!! Sorry Karl, I did not see you post about names until too late. But it's me Tom Hall from the sunny state of Florida USA. Many people know me from my sales of scintillator kits PMTs, and the like. Members are always welcome to contact me direct for a better price if...