SPL Web>SplWeb>SPLparameterList (revision 33)~~EditAttachPDF~~

SPL parameter table

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	0.192	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	0.192	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 tau_l (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 tau_l	[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	*
Cryogenic duty cycle	[%]	4.09/8.17	4.11/8.22	2010-05-11
Tunnel slope	[%]	1.7%	1.7%	2010-05-11
Quality factor	10⁹	6/3	10/5	2010-05-11
HOM & Coupler loss 5-280 K	[g/s]	0.05	0.05	2010-05-11
Cavity bath temperature	[K]	2.0	2.0	2010-05-11
Magnet operating temperature	[K]	ambient	ambient	2010-05-11
Accelerating gradient	[MV/m]	19.3	25	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
R/Q value (linac def.)	[Ohm]	275	566	2011-11-17
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
Dynamic heat load p. cavity	[W]	4.2/16.8	5.1/20.4	2010-05-25
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

-- FrankGerigk - 15 Aug 2007

Attachments

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

Topic revision: r33 - 2011-11-17 - FrankGerigk

- Cern Search
- TWiki Search
- Google Search
SPL All webs