SPL parameter table

link to the Linac4 ParameterTable


General linac parameters
Parameters for the different modes of operation
List of cavities, cryo-modules, length of linac including extraction areas, quadrupole gradients
Cavity parameters
Cryo Parameters

General linac parameters

Parameter Unit HP-SPL LP-SPL Timestamp
Energy [GeV] 5 4 15 August 2007
Beam power [MW] >4.0 0.144 31 March 2008
Repetition rate [Hz] 50 2 15 August 2007
Average pulse current [mA] 20/40 0-20 28 November 2008
Peak pulse current [mA] 32/64 32 15 August 2007
Source current [mA] 40/80 40 21 April 2008
Chopping ratio [%] 62 62 21 November 2008
Beam pulse length [ms] 0.4(1) - 0.8(2) 0.9 2010-04-13
Number of klystrons (704 MHz, 5 MW)   tbd tbd 15 August 2007
Geometric cavity beta   0.65/1.0 0.65/1.0 24 April 2009
Number of cavities   60/184 60/144 2009-10-06
Additional cavities for debunching   0/16 0/16 2009-10-06
Cavities/klystron   tbd tbd 22 April 2008
Cavities/cryostat   3/8 3/8 2010-05-04
Max. power/cavity [MW] 1 0.5 21 April 2008
Length(3) [m] 525 450 2009-11-09


(1) high-current operation
(2) low-current operation
(3) excluding Linac4, including 16 debuncher cavities at linac end, including extraction to ISOLDE and EURISOL

Parameters for the different modes of operation

Parameter Unit HP-SPL HP-SPL LP-SPL Timestamp
low-current high-current
Energy [GeV] 5 5 4 2010-04-13
Beam power [MW] 4.0 4 0.144 2010-04-13
Repetition rate [Hz] 50 50 2 2010-04-13
Average pulse current [mA] 20 40 0-20 2010-04-13
Peak pulse current [mA] 32 64 32 2010-04-13
Source current [mA] 40 80 40 2010-04-13
Chopping ratio [%] 62 62 62 2010-04-13
Beam pulse length [ms] 0.8 0.4 0.9 2010-04-13
filling time constant taul (b=0.65/1.0) [ms] 0.54/0.55 0.27/0.27 0.54/0.55 2010-04-13
actual cavity filling time: ln(4) x taul [ms] 0.75/0.76 0.37/0.38 0.75/0.76 2010-04-13
RF pulse length (filling time + flat top) [ms] 1.55/1.56 0.77/0.78 1.65/1.66 2010-04-13
Protons per pulse [1014] 1.0 1.0 1.13 2010-04-13
Beam duty cycle [%] 4 2 0.18 2010-04-13
RF duty cycle [%] 7.8 3.9 0.33 2010-04-13
Cryogenics duty cycle [%] 8.2 4.1 0.35 2010-04-13

Cryo design parameters (assuming 40 mA/0.4 ms beam pulse as nominal, 20 mA/0.8 ms beam pulse as ultimate)

Parameter Unit low-beta high-beta Timestamp
* * nominal/ultimate nominal/ultimate *
Cavity bath temperature [K] 2.0 2.0 2010-05-11
Beam loss [W/m] 1.0 1.0 2010-05-11
Static loss along cryo-modules at 2 K [W/m] ? ? 2010-05-11
Static loss at 5-280 K [W/m] ? ? 2010-05-11
Accelerating gradient [MV/m] 19.3 25 2010-05-11
Quality factor 109 6/3 10/5 2010-05-11
R/Q value (linac def.) [Ohm] 275 566 2011-11-17
Cryogenic duty cycle [%] 4.09/8.17 4.11/8.22 2010-05-11
Coupler loss at 2.0 K [W] <0.2/0.2 <0.2/0.2 2010-05-11
HOM loss at 2.0 K in cavity [W] <1/<3 <1/<3 2010-05-11
HOM coupler loss at 2.0 K (per coupler) [W] <0.2 /0.2 <0.2/0.2 2010-05-11
HOM & Coupler loss 5-280 K [g/s] 0.05 0.05 2010-05-11
Tunnel slope [%] 1.7% 1.7% 2010-05-11
Magnet operating temperature [K] ambient ambient 2010-05-11
No of cavities   60 200 2010-05-11
No of cryostats   20 25 2010-05-11
Cavities per cryostat   3 8 2010-05-11
Dynamic heat load p. cavity [W] 4.2/16.8 5.1/20.4 2010-05-25

-- FrankGerigk - 15 Aug 2007

Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formatxlsx Copy_of_Gradients_of_SPL_0_65-1_0_Quads.xlsx r1 manage 15.7 K 2009-09-04 - 11:58 FrankGerigk  
PDFpdf SPL-lengths.pdf r1 manage 54.9 K 2009-09-04 - 17:43 FrankGerigk  

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Topic revision: r35 - 2012-11-20 - FrankGerigk
 
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