[Pansophy] Fw: SRF Cavities ' Parameters Table

[Megan McDonald]

________________________________
From: Haipeng Wang <haipeng at jlab.org>
Sent: Tuesday, July 15, 2025 2:44 PM
To: Rongli Geng <geng at jlab.org>
Cc: Shaoheng Wang <wang at jlab.org>; Valerie Bookwalter <bookwalt at jlab.org>; Megan McDonald <megan at jlab.org>; Gianluigi Ciovati <gciovati at jlab.org>; Uttar Pudasaini <uttar at jlab.org>
Subject: Re: SRF Cavities ' Parameters Table

Rongli, both VTA and CMTF or CEBAF using sqrt(R/Q)/L numbers. CEBAF also used r/Q=R/Q/L definition.
For the Eacc/sqrt(U) (MV/m/sqrt(J)). You only need G14=Sqrt(R/Q)/L=46.58 sqrt(Ohm)/m.
So Eacc/sqrt(U)=sqrt(R/Q*omega)/Lacc=46.58*sqrt(2*pi*1497*10^6)*10^-6=4.518MV/m/sqrt(J).

Haipeng
________________________________
From: Rongli Geng <geng at jlab.org>
Sent: Tuesday, July 15, 2025 2:23 PM
To: Haipeng Wang <haipeng at jlab.org>
Cc: Shaoheng Wang <wang at jlab.org>; Valerie Bookwalter <bookwalt at jlab.org>; Megan McDonald <megan at jlab.org>; Gianluigi Ciovati <gciovati at jlab.org>; Uttar Pudasaini <uttar at jlab.org>
Subject: Re: SRF Cavities ' Parameters Table

Thanks Haipeng for sharing.

I'm looking for a cavity parameter: Eacc/sqrt(U) (MV/m/sqrt(J)). It is not in your table. Is it possible to extract it from the model and data base for C75 cavity?

Thanks,
Rongli

Rongli Geng
Principal Staff Scientist
SRF S&T Department Head
O: (757)269-6790 | M: (757)282-1207
geng at jlab.org
[cid:a1562f29-c821-4956-8b04-36193b8cf7c3]


________________________________
From: Haipeng Wang <haipeng at jlab.org>
Sent: Tuesday, July 15, 2025 1:51 PM
To: Rongli Geng <geng at jlab.org>
Cc: Shaoheng Wang <wang at jlab.org>; Valerie Bookwalter <bookwalt at jlab.org>; Megan McDonald <megan at jlab.org>
Subject: SRF Cavities ' Parameters Table

Rongli,
     I have tried to look at this table in JLab's Pansophy system without a success. Here attached is my Excel spreadsheet I had updated with Megan in last December.
   Certainly, current CERN's QPR and ODU's TE0XX cavities tuning in the RF Structure Lab are not in my radar or in this table.
Thanks for asking
Haipeng
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